首页|Intense and Superflat White Laser with 700-nm 3-dB Bandwidth and 1-mJ Pulse Energy Enabling Single-Shot Subpicosecond Pulse Laser Spectroscopy
Intense and Superflat White Laser with 700-nm 3-dB Bandwidth and 1-mJ Pulse Energy Enabling Single-Shot Subpicosecond Pulse Laser Spectroscopy
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An optical spectrometer is a basic spectral instrument that probes microscopic physical and chemical properties of macroscopic objects but generally suffers from difficulty in broadband time-resolved measurement.In this work,we report the creation of ultrabroadband white-light laser with a 3-dB bandwidth covering 385 to 1,080 nm,pulse energy of 1.07 mJ,and pulse duration of several hundred femtoseconds by passing 3-mJ pulse energy,50-fs pulse duration Ti:Sapphire pulse laser through a cascaded fused silica plate and chirped periodically poled lithium niobate crystal.We utilize this unprecedented superflat,ultrabroadband,and intense femtosecond laser light source to build a single-shot(i.e.,single-pulse)subpicosecond pulse laser ultraviolet-visible-near-infrared spectrometer and successfully measure various atomic and molecular absorption spectra.The single-shot ultrafast spectrometer may open up a frontier to monitor simultaneously the ultrafast dynamics of multiple physical and chemical processes in various microscopic systems.
Lihong Hong、Haiyao Yang、Liqiang Liu、Mingzhou Li、Yuanyuan Liu、Baoqin Chen、Huakang Yu、Wenbo Ju、Zhi-Yuan Li
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School of Physics and Optoelectronics,South China University of Technology,Guangzhou 510641,China
State Key Laboratory of Luminescent Materials and Devices,South China University of Technology,Guangzhou 510640,China
National Natural Science Foundation of ChinaScience and Technology Project of GuangdongGuangdong Innovative and Entrepreneurial Research Team ProgramNational Key R&D Program of China
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