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High-repetition-rate,high-beam-quality ultraviolet sub-100-picosecond pulse compression using transient SBS 认领 引用
1
作者 Chen Cao Yulei Wang +6 位作者 Qifan Dang Jianfeng Yue Linru He Hengzhe Yu Yu Yu Zhenxu Bai Zhiwei Lü 《Chinese Optics Letters》 SCIE EI CAS CSCD 2026年第7期169-174,共6页
Transient stimulated Brillouin scattering(SBS)pulse compression technology is an effective way to obtain a sub-100-picosecond laser.High-repetition-rate ultraviolet SBS pulse compression can further make breakthroughs... Transient stimulated Brillouin scattering(SBS)pulse compression technology is an effective way to obtain a sub-100-picosecond laser.High-repetition-rate ultraviolet SBS pulse compression can further make breakthroughs in the saturation compression pulse width and provide a new generation pathway for high-repetition-rate and high-beam-quality ultraviolet picosecond lasers.To the best of our knowledge,this work adopts a novel high viscosity Brillouin medium and effectively mitigates the adverse effects of thermal effects on the spatial characteristics of the SBS output laser by combining lowtemperature treatment methods.Under the irradiation of 355 nm pump light with a repetition rate of 300 Hz and a pulse width of 450 ps,a compressed laser of the narrowest duration of 84 ps was obtained with a beam quality factor M2<1.5 and an overall energy reflectivity of 40%. 展开更多
关键词 high repetition rate SBS pulse compression ultraviolet picosecond laser
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Generation of sub-three-cycle pulses via double-stage all-fiber nonlinear compression from a thulium-doped fiber laser 认领 引用
2
作者 Yan Wu Yu Cai +4 位作者 Guoqing Zhou Jintao Fan Youjian Song Shiying Cao Minglie Hu 《Advanced Photonics Nexus》 CSCD 2025年第5期99-104,共6页
We demonstrate few-cycle pulse generation based on double-stage all-fiber nonlinear pulse compression from a thulium-doped fiber laser at a repetition rate of∼199.74 MHz.The homemade laser provides an average power o... We demonstrate few-cycle pulse generation based on double-stage all-fiber nonlinear pulse compression from a thulium-doped fiber laser at a repetition rate of∼199.74 MHz.The homemade laser provides an average power of 130 mW,serving as the seed for subsequent amplification.After amplification,significant spectral broadening to an octave-spanning bandwidth(1.2 to 2.4μm)is attained through self-phase modulation-dominated nonlinear effects in an ultrahigh numerical aperture fiber and a highly nonlinear fiber.Followed by a two-stage nonlinear compressor,the system directly delivers near transform-limited pulses with a pulse duration of 19.8 fs(2.9 cycles at a central wavelength of 2000 nm)and a pulse energy of 3.37 nJ.To the best of our knowledge,this result is the shortest pulse duration directly generated from a thulium-doped fiber laser.This robust and simplified all-fiber system provides a promising route toward practical mid-infrared frequency comb generation and mid-infrared spectroscopy. 展开更多
关键词 nonlinear compression few-cycle pulse mode-locked laser
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PERFORMANCE ANALYSIS OF PULSE COMPRESSION USING PHASE-CODED SIGNALS FOR SPARSE-ARRAY SYNTHETIC IMPULSE AND APERTURE RADAR 认领 引用
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作者 Chen Baixiao Zhang Shouhong 《Journal of Electronics(China)》 1998年第4期332-338,共7页
Sparse-array Synthetic Impulse and Aperture Radar (SIAR) can isotropically radiate by employing multiple frequencies (synthetic pulse) and multiple antennas (synthetic antenna). According to Ambiguity Function(AF), it... Sparse-array Synthetic Impulse and Aperture Radar (SIAR) can isotropically radiate by employing multiple frequencies (synthetic pulse) and multiple antennas (synthetic antenna). According to Ambiguity Function(AF), its range resolution depends only on bandwidth of transmitted signals, however, the distance grating lobes emerge when increasing the time-bandwidth product of transmitted signals. The performance of pulse compression is analyzed with the transmitted signals modulated by phase-coded sequences. It is seen that greater ratio of pulse compression and suppression of range sidelobe in SIAR can be obtained, and its effective range and range resolution is increased as well. 展开更多
关键词 Sparse array Synthetic impulse and aperture radar Phase-coded Pulse compression
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Pulse Compression Technique of Radio Fuze 认领 引用 被引量：1
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作者 胡秀娟 邓甲昊 桑会平 《Journal of Beijing Institute of Technology》 EI CAS 2006年第4期401-405,共5页
The advantages of using phase-coded pulse compression technique for radio fuze systems are evaluated. With building mathematical models a matched filter has been implemented successfully. Various simulations for pulse... The advantages of using phase-coded pulse compression technique for radio fuze systems are evaluated. With building mathematical models a matched filter has been implemented successfully. Various simulations for pulse compression waveform coding were done to evaluate the performance of fuze system under noisy environment. The results of the simulation and the data analysis show that the phase-coded pulse compression gets a good result in the signal identification of the radio fuze with matched filter. Simultaneously, a suitable sidelobe suppression filter is established by simulation, the suppressed sidelobe level is acceptable to radio fuze application. 展开更多
关键词 proximity fuze radio fuze target detection phase-coded pulse compression Barker codes sidelobe suppression
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Femtosecond electron pulse compression by using the time focusing technique in ultrafast electron diffraction 认领 引用 被引量：5
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作者 温文龙 雷晓红 +7 位作者 胡昕 徐向晏 王俊锋 曹希斌 刘虎林 王超 党利宏 田进寿 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第11期228-232,共5页
We present a new model of an electron gun for generating subrelativistic femtosecond （fs） electron pulses. The basic idea is to utilize a dc acceleration stage combined with a time focusing region, the time focusing... We present a new model of an electron gun for generating subrelativistic femtosecond （fs） electron pulses. The basic idea is to utilize a dc acceleration stage combined with a time focusing region, the time focusing electrode generates an electron energy chirp for bunching at the target. Without considering the space charge effects, simulations of the electron gun were carried out under the conditions of different dc voltages and various slopes of the voltage added on the time focusing electrode. Tracing and simulating large numbers of photoelectrons through Monte-Carlo and finite difference methods, the electron pulses with 1 ps can be compressed to 55 fs, which will allow significant advances in the field of ultrafast diagnosis. 展开更多
关键词 time focusing technique temporal pulse compressing time-dependent electric field Monte Carlo method
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Research on the imaging of concrete defect based on the pulse compression technique 认领 引用 被引量：8
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作者 李长征 张碧星 +1 位作者 师芳芳 谢馥励 《Applied Geophysics》 SCIE CSCD 2013年第3期337-348,359,共12页
When the synthetic aperture focusing technology （SAFT） is used for the detection of the concrete, the signal-to-noise ratio （SNR） and detection depth are not satisfactory. Therefore, the application of SAFT is usu... When the synthetic aperture focusing technology （SAFT） is used for the detection of the concrete, the signal-to-noise ratio （SNR） and detection depth are not satisfactory. Therefore, the application of SAFT is usually limited. In this paper, we propose an improved SAFT technique for the detection of concrete based on the pulse compression technique used in the Radar domain. The proposed method first transmits a linear frequency modulation （LFM） signal, and then compresses the echo signal using the matched filtering method, after which a compressed signal with a narrower main lobe and higher SNR is obtained. With our improved SAFT, the compressed signals are manipulated in the imaging process and the image contrast is improved. Results show that the SNR is improved and the imaging resolution is guaranteed compared with the conventional short-pulse method. From theoretical and experimental results, we show that the proposed method can suppress noise and improve imaging contrast, and can also be used to detect multiple defects in concrete. 展开更多
关键词 Concrete defect LFM pulse compression SAFT SNR
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Femtosecond parabolic pulse nonlinear compression with gas-filled hollow-core fiber 认领 引用 被引量：5
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作者 黄志远 冷雨欣 戴晔 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第12期224-228,共5页
We study theoretically the spectral intensity evolutions of the femtosecond Gaussian and parabolic pulses with different initial pulse energies and compare the nonlinear compressions of these pulses based on a meter-l... We study theoretically the spectral intensity evolutions of the femtosecond Gaussian and parabolic pulses with different initial pulse energies and compare the nonlinear compressions of these pulses based on a meter-long hollow-core fiber filled with neon for different initial pulse durations. The pulses are first coupled into gas-filled hollow-core fiber for spectrum broadening, then compressed by the optimal chirp compensation. The parabolic pulse possesses a shorter pulse duration, larger peak power, and cleaner wings than Gaussian pulse. The properties are useful for compressing the pulses and thus generating the high-energy, short-duration pulses. 展开更多
关键词 parabolic pulse nonlinear compression hollow-core fiber spectrum broadening
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Lorentz force electrical impedance tomography using pulse compression technique 认领 引用 被引量：5
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作者 孙直申 刘国强 夏慧 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第12期355-360,共6页
Lorentz force electrical impedance tomography （LFEIT） combines ultrasound stimulation and electromagnetic field detection with the goal of creating a high contrast and high resolution hybrid imaging modality. In thi... Lorentz force electrical impedance tomography （LFEIT） combines ultrasound stimulation and electromagnetic field detection with the goal of creating a high contrast and high resolution hybrid imaging modality. In this study, pulse compression working together with a linearly frequency modulated ultrasound pulse was investigated in LFEIT. Experiments were done on agar phantoms having the same level of electrical conductivity as soft biological tissues. The results showed that：（i） LFEIT using pulse compression could detect the location of the electrical conductivity variations precisely; （ii） LFEIT using pulse compression could get the same performance of detecting electrical conductivity variations as the traditional LFEIT using high voltage narrow pulse but reduce the peak stimulating power to the transducer by 25.5 dB; （iii） axial resolution of 1 mm could be obtained using modulation frequency bandwidth 2 MHz. 展开更多
关键词 Lorentz force electrical impedance tomography Hall effect imaging magneto-acousto-electrical tomography linear frequency-modulation pulse compression
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A novel power-combination method using a time-reversal pulse-compression technique 认领 引用 被引量：1
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作者 陆希成 田锦 +2 位作者 张荣威 汪海波 邱扬 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第8期283-288,共6页
The electromagnetic time-reversal(TR)technique has the characteristics of spatiotemporal focusing in a time-reversal cavity(TRC),which can be used for pulse compression,thus forming an electromagnetic pulse with high ... The electromagnetic time-reversal(TR)technique has the characteristics of spatiotemporal focusing in a time-reversal cavity(TRC),which can be used for pulse compression,thus forming an electromagnetic pulse with high peak power.A time-reversed pulse-compression method in a single channel has high pulse compression gain.However,single channel pulse compression can only generate limited gain.This paper proposes a novel TR power-combination method in a multichannel TRC to obtain higher peak power based on TR pulse-compression theory.First,the TR power-combination model is given,and the crosstalk properties of the associated channel and the influence of the reversal performance are studied.Then,the power-combination performances for the TR pulse compression,such as combined signal to noise ratio(SNR)and combined compression gain,are analyzed by numerical simulation and experimental methods.The results show that the proposed method has obvious advantages over pulse-compression methods using a single channel cavity,and is more convenient for power combination. 展开更多
关键词 time reversal time-reversal cavity power combination pulse compression
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Energetic few-cycle pulse compression in gas-filled hollow core fiber with concentric phase mask 认领 引用
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作者 Yu Zhao Zhi-Yuan Huang +2 位作者 Rui-Rui Zhao Ding Wang Yu-Xin Leng 《Chinese Physics B》 SCIE EI CAS CSCD 2019年第6期213-222,共10页
The compression of high-energy, linearly polarized pulses in a gas-filled hollow core fiber(HCF) by using a concentric phase mask is studied theoretically. Simulation results indicate that using a properly designed co... The compression of high-energy, linearly polarized pulses in a gas-filled hollow core fiber(HCF) by using a concentric phase mask is studied theoretically. Simulation results indicate that using a properly designed concentric phase mask, a40-fs input pulse centered at 800 nm with energy up to 10.0 mJ can be compressed to a full width at half maximum(FWHM) of less than 5 fs after propagating through a neon-filled HCF with a length of 1 m and diameter of 500 μm with a transmission efficiency of 67%, which is significantly higher than that without a concentric phase mask. Pulses with energy up to 20.0 mJ can also be efficiently compressed to less than 10 fs with the concentric phase mask. The higher efficiency due to the concentric phase mask can be attributed to the redistribution of the transverse intensity profile, which reduces the effect of ionization. The proposed method exhibits great potential for generating few-cycle laser pulse sources with high energy by the HCF compressor. 展开更多
关键词 pulse compression hollow-core fiber phase mask
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Irregular Segmented Region Compression Coding Based on Pulse Coupled Neural Network 认领 引用
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作者 MA Yi-de QI Chun-liang +2 位作者 QIAN Zhi-bai SHI Fei ZHANG Bei-dou 《Semiconductor Photonics and Technology》 2006年第2期110-116,130,共7页
An irregular segmented region coding algorithm based on pulse coupled neural network(PCNN) is presented. PCNN has the property of pulse-coupled and changeable threshold, through which these adjacent pixels with approx... An irregular segmented region coding algorithm based on pulse coupled neural network(PCNN) is presented. PCNN has the property of pulse-coupled and changeable threshold, through which these adjacent pixels with approximate gray values can be activated simultaneously. One can draw a conclusion that PCNN has the advantage of realizing the regional segmentation, and the details of original image can be achieved by the parameter adjustment of segmented images, and at the same time, the trivial segmented regions can be avoided. For the better approximation of irregular segmented regions, the Gram-Schmidt method, by which a group of orthonormal basis functions is constructed from a group of linear independent initial base functions, is adopted. Because of the orthonormal reconstructing method, the quality of reconstructed image can be greatly improved and the progressive image transmission will also be possible. 展开更多
关键词 Pulse coupled neural network Segmentation Orthonormal basis Compression coding possible.
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ASIC Design and Implementation for Digital Pulse Compression Chip 认领 引用 被引量：1
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作者 高俊峰 韩月秋 王巍 《Journal of Beijing Institute of Technology》 EI CAS 2004年第1期1-4,共4页
A novel ASIC design of changeable-point digital pulse compression (DPC) chip is presented. System hardware resource is reduced to one third of the traditional design method through operations sharing hardware, (i.e.) ... A novel ASIC design of changeable-point digital pulse compression (DPC) chip is presented. System hardware resource is reduced to one third of the traditional design method through operations sharing hardware, (i.e.) let FFT, complex multiplication and IFFT be fulfilled with the same hardware structure. Block-floating-point scaling is used to enhance the dynamic range and computation accuracy. This design applies parallel pipeline structure and the radix-4 butterfly operation to improve the processing speed. In addition, a triple-memory-space(TMS) configuration is used that allows input, computation and output operations to be overlapped, so that the dual-butterfly unit is never left in an idle state waiting for I/O operation. The whole design is implemented with only one chip of XC2V500-5 FPGA. It can implement 1 024-point DPC within 91 6 μs.The output data is converted to floating-point formation to achieve seamless interface with TMS320C6701. The validity of the design is verified by simulation and measurement results. 展开更多
关键词 digital pulse compression (DPC) block-floating-point algolithm ASIC design
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Study on pulse compression in tapered holey fibres 认领 引用
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作者 马文文 李曙光 +2 位作者 尹国冰 付博 张磊 《Chinese Physics B》 SCIE EI CAS 2010年第10期314-318,共5页
This paper proposes three kinds of tapered holey fibres with a multi-layer of holes whose pitch of air holes at the end of untapered and tapered are 5.8 μm and 1.8 μm. The central wavelength which locates in the ano... This paper proposes three kinds of tapered holey fibres with a multi-layer of holes whose pitch of air holes at the end of untapered and tapered are 5.8 μm and 1.8 μm. The central wavelength which locates in the anomalous dispersion region is 1.55 μm. An adaptive split-step Fourier method is numerically used to study the pulse propagation in tapered holey fibres. For the considered convex tapered holey fibre, at a wavelength of 1.55 μm, a compression factor of 136.7 can be achieved by initial width of 800 fs propagation through a length of 0.8 m. It demonstrates that in anomalous dispersion region, pulse can be compressed with the increase of nonlinearity coefficient and the decrease of dispersion coefficient. 展开更多
关键词 tapered holey fibre pulse compression anomalous dispersion
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A UWB communication system based on dechirp pulse compression and OOK modulation 认领 引用
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作者 赵亮 Jin Liang +2 位作者 Huang Kaizhi Zhang Jian Chen Jinyu 《High Technology Letters》 EI CAS 2013年第2期190-196,共7页
In this paper,a novel UWB communication system structure is proposed.The transmitted signal uses OOK modulation and chirp spread spectrum.The received signal first goes through a dechirp pulse compression process,and ... In this paper,a novel UWB communication system structure is proposed.The transmitted signal uses OOK modulation and chirp spread spectrum.The received signal first goes through a dechirp pulse compression process,and then is processed with a two-level sliding correlation algorithm for coarse timing synchronization and fine timing synchronization.After the SNR estimation,the signal is demodulated by an energy detection method.An integrated system level simulation model is established,and the performance of this system is evaluated over the AWGN channel,IEEE 802.15.3a CM1 and CM4 channels.The theoretical analysis and simulation results show that this UWB communication system can effectively reduce the sampling rate and signal processing speed at the receiver,and it is more suitable for long-distance and low-rate UWB communications with high spreading gain. 展开更多
关键词 uhra wide band （UWB） dechirp pulse compression on-off keying （OOK） sliding correlation BER
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NEW TYPE OF WINDOWS FOR DIGITAL PULSE COMPRESSION IN FREQUENCY DOMAIN FOR BROADBAND LFM SIGNALS 认领 引用 被引量：3
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作者 HuangWei FangKeying HuTe XiangJingcheng 《Journal of Electronics(China)》 2005年第2期149-152,共4页
A new type of window called combined window is designed to get higher Ratio of Mainlobe to Sidelobes (RMS) and lower Mainlobe Widening Factor (MWF). Simulation results prove that the new window can solve the contradic... A new type of window called combined window is designed to get higher Ratio of Mainlobe to Sidelobes (RMS) and lower Mainlobe Widening Factor (MWF). Simulation results prove that the new window can solve the contradiction between RMS and MWF better than classic windows. 展开更多
关键词 Linear frequency modulation Windows Pulse compression
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Analysis and Improvement of the Real-Time Segmented Pulse Compression-Detection Algorithm 认领 引用
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作者 YANG Jian-xi XU Ping +1 位作者 XIE Xiao-hua MA Ying-jie 《Journal of Donghua University(English Edition)》 CAS 2016年第6期928-932,共5页
Real-Time segmented pulse compression-detection is one of the key technologies of space-borne tracking receiver.Its implementation requires an optimized and dedicated hardware.The real-time processing places several c... Real-Time segmented pulse compression-detection is one of the key technologies of space-borne tracking receiver.Its implementation requires an optimized and dedicated hardware.The real-time processing places several constraints such as area occupied,power comumption,and speed.A number of segmented compression techniques have been proposed to overcome these limitations and decrease the processing latency.However,relatively high power loss in the partial field could limit their implementation in many current real-time systems.A good theoretical model was designed with intersection signal accumulation to enhance signal-noise-ratio(SNR)gain of detecting signal in the paper.From the experimental results it is known that this approach works well for pulse compression-detection,which is better suited for implementation in the high performance of current field programmable gate array(FPGA)with dedicated hardware multipliers. 展开更多
关键词 linear frequency modulation(LFM) segmented pulse compression signal-noise-ratio(SNR)gain target detection
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Optical Pulse Compression Based on High-doped Erbium Fiber Amplifier and Standard Single-mode Fiber 认领 引用 被引量：1
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作者 REN Jing JIA Dong-fang LIU Yang LI Ya-bin 《Semiconductor Photonics and Technology》 2008年第2期90-94,共5页
Proposed is a novel optical pulse compression technique based on high-doped erbium fiber amplifier and standard single-mode fiber(SMF). We used the amplifier with the erbium ion concentration of 6.3×10-3 to ampli... Proposed is a novel optical pulse compression technique based on high-doped erbium fiber amplifier and standard single-mode fiber(SMF). We used the amplifier with the erbium ion concentration of 6.3×10-3 to amplify a hyperbolic secant pulse from a regeneratively mode-locked fiber laser. The central wavelength, pulsewidth and peak power of the pulse are 1 550 nm, 12.5 ps and 3 mW, respectively. Then the amplified pulse with peak power level corresponding to a higher-order soliton is compressed when it propagates through a 3-km-long single-mode fiber. Studied are the compressed pulses under different pump powers and fiber lengths. The results show that it can get a narrower pulse, and solve the difficulty that pulses at low power can not be compressed directly in the fiber. And the construct is compact. 展开更多
关键词 high-doped erbium fiber amplifier soliton single mode fiber（SMF） pulse compression
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COMPUTER SIMULATION FOR AN ULTRA-LOW RANGE SIDELOBE PULSE COMPRESSION SCHEME 认领 引用
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作者 Yang Guangzheng Yang Xiangyu Xu Lijuan 《Journal of Electronics(China)》 1998年第2期116-124,共9页
A canceling range sidelobes scheme has been suggested by Yang Guangzheng, et al.,(1997) this technology is based on the fact that all sidelobe of group correlation function of ideal sets are zero. At first, this paper... A canceling range sidelobes scheme has been suggested by Yang Guangzheng, et al.,(1997) this technology is based on the fact that all sidelobe of group correlation function of ideal sets are zero. At first, this paper gives the best ideal sets (i. e. the best biphase code sets whose maximal sidelobe not more than 2) for all code length N≤12, which have been obtained from binary sequences by means of the best codes sieving method suggested by Yang Guangzheng, et al.(1997) Computer simulation for group correlation property of best ideal sets for code length N=12 on various conditions is made. Simulation result shows that the sidelobe level of best ideal set with no weighting is zero, under condition of zero-Doppler shift and has ultra-low sidelobe on Doppler up to 5kHz with no weighting and whose tolerance of phase and amplitude distortion is bigger too. 展开更多
关键词 Ultra-low sidelobe pulse compression Ideal sets Group correlation property
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An Adaptive Pulse Compression Filter for Ultrasound Contrast Harmonic Imaging 认领 引用
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作者 Jenho Tsao Ming-Huang Chen 《Engineering（科研）》 2013年第10期118-122,共5页
Coded excitation is useful for ultrasound contrast imaging to increase penetration and SNR, and improve the contrast to tissue ratio (CTR). The waveform of bubble response depends greatly on bubble size, the frequency... Coded excitation is useful for ultrasound contrast imaging to increase penetration and SNR, and improve the contrast to tissue ratio (CTR). The waveform of bubble response depends greatly on bubble size, the frequency and bandwidth of the excitation chirp signal. This makes the pulse compression filter based on square-law be wrong for bubbles with changing sizes. In this paper, an adaptive pulse compression (APC) filter for the second harmonic of microbubble with varying size distribution is proposed. The APC filter is designed based on the estimated power spectrum of the received bubble harmonic echoes. Theoretical analysis and simulation studies are presented for evaluating performance of the APC filter. For monodisperse bubble, the power improvement factor of the APC filter can be more than 20 dB. 展开更多
关键词 Ultrasound Contrast Imaging Square Law Pulse Compression Adaptive Pulse Compression
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Compressing ultrafast electron pulse by radio frequency cavity 认领 引用 被引量：1
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作者 裴敏洁 齐大龙 +3 位作者 齐迎朋 贾天卿 张诗按 孙真荣 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第4期184-189,共6页
An ultrafast electron diffraction technique with both high temporal and spatial resolution has been shown to be a powerful tool to observe the material transient structural change on an atomic scale.The space charge f... An ultrafast electron diffraction technique with both high temporal and spatial resolution has been shown to be a powerful tool to observe the material transient structural change on an atomic scale.The space charge forces in a multi-electron bunch will greatly broaden the electron pulse width,and therefore limit the temporal resolution of the high brightness electron pulse.Here in this work,we design an ultrafast electron diffraction system,and utilize a radio frequency cavity to realize the ultrafast electron pulse compression.We experimentally demonstrate that the stretched electron pulse width of14.98 ps with an electron energy of 40 keV and the electron number of 1.0 ×10;can be maximally compressed to about0.61 ps for single-pulse measurement and 2.48 ps for multi-pulse measurement by using a 3.2-GHz radiofrequency cavity.We also theoretically and experimentally analyze the parameters influencing the electron pulse compression efficiency for single-and multi-pulse measurements by considering radiofrequency field time jitter,electron pulse time jitter and their relative time jitter.We suggest that increasing the electron energy or shortening the distance between the compression cavity and the streak cavity can further improve the electron pulse compression efficiency.These experimental and theoretical results are very helpful for designing the ultrafast electron diffraction experiment equipment and compressing the ultrafast electron pulse width in a future study. 展开更多
关键词 ultrafast electron diffraction electron pulse compression radio frequency cavity
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