Spectrum shuttle for producing spatially shapable GHz burst pulses  

作　　者：Keitaro Shimada Ayumu Ishijima Takao Saiki Ichiro Sakuma Yuki Inada Keiichi Nakagawa 

机构地区：[1]The University of Tokyo,Department of Bioengineering,Tokyo,Japan [2]The University of Tokyo,Department of Precision Engineering,Tokyo,Japan [3]The University of Tokyo,Medical Device Development and Regulation Research Center,Tokyo,Japan [4]Saitama University,Department of Electronics and Information Sciences,Saitama,Japan [5]Research Institute for Electronic Science,Hokkaido University,Japan

出　　处：《Advanced Photonics Nexus》2024年第1期11-19,共9页先进光子学通讯（英文）

基　　金：supported by MEXT Quantum Leap Flagship Program (MEXT Q-LEAP) (Grant No.JPMXS0118067246);K.S.was supported by JST ACT-X (JPMJAX22K8).Y.I.and A.I.were partly supported by JST PRESTO (JPMJPR2003 and JPMJPR1902,respectively);K.N.was partly supported by JST FOREST (JPMJFR215C).

摘　　要：Spatiotemporal shaping of ultrashort pulses is pivotal for various technologies,such as burst laser ablation and ultrafast imaging.However,the difficulty of pulse stretching to subnanosecond intervals and independent control of the spatial profile for each pulse limit their advancement.We present a pulse manipulation technique for producing spectrally separated GHz burst pulses from a single ultrashort pulse,where each pulse is spatially shapable.We demonstrated the production of pulse trains at intervals of 0.1 to 3 ns in the 800-and 400-nm wavelength bands and applied them to ultrafast single-shot transmission spectroscopic imaging(4 Gfps)of laser ablation dynamics with two-color sequentially timed all-optical mapping photography.Furthermore,we demonstrated the production of pulse trains containing a shifted or dual-peak pulse as examples of individual spatial shaping of GHz burst pulses.Our proposed technique brings unprecedented spatiotemporal manipulation of GHz burst pulses,which can be useful for a wide range of laser applications.

关 键 词：pulse stretching spatiotemporal shaping ultrashort pulse trains ultrafast imaging burst laser ablation transmission spectroscopic imaging. 

分 类 号：TN2[电子电信—物理电子学]