Broadband 1-GHz mid-infrared frequency comb
作者机构：Precision Laser Diagnostics LaboratoryUniversity of ColoradoBoulderCO 80309USA Time and Frequency DivisionNational Institute of Standards and TechnologyBoulderCO 80305USA Department of PhysicsUniversity of ColoradoBoulderCO 80309USA Department of ChemistryUniversity of ColoradoBoulderCO 80309USA Electrical Computer and Energy EngineeringUniversity of ColoradoBoulderCO 80309USA
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2022年第11卷第10期
页 面：2358-2364页
核心收录：
学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 0702[理学-物理学]
基 金：Thanks to NSF 2019195,Defense Advanced Research Project Agency(W31P4Q-15-1-0011) AirForceOffceof ScientificResearch(FA9550-20-1-0328and FA9550-16-1-0016) NISTfor fundingas wellas Daniel Herman,Kristina Chang,Franklyn Quinlan and lan.Coddington for their contributions and comments on this manuscript.We thank P.Schunemann and K.Zawilski at BAE forprovidingtheCSPandOP-GaPcrystals
主 题：repetition spacing transient
摘 要：Mid-infrared(MIR)spectrometers are invaluable tools for molecular fingerprinting and hyper-spectral *** the available spectroscopic approaches,GHz MIR dual-comb absorption spectrometers have the potential to simultaneously combine the high-speed,high spectral resolution,and broad optical bandwidth needed to accurately study complex,transient events in chemistry,combustion,and ***,such a spectrometer has not yet been demonstrated due to the lack of GHz MIR frequency combs with broad and full spectral ***,we introduce the first broadband MIR frequency comb laser platform at 1 GHz repetition rate that achieves spectral coverage from 3 to 13 μ*** frequency comb is based on a commercially available 1.56 μm mode-locked laser,robust all-fiber Er amplifiers and intra-pulse difference frequency generation(IP-DFG)of few-cycle pulses in x(2)nonlinear *** used in a dual comb spectroscopy(DCS)configuration,this source will simultaneously enable measurements with μs time resolution,1 GHz(0.03 cm-1)spectral point spacing and a full bandwidth of5 THz(166 cm-1)anywhere within the MIR atmospheric *** represents a unique spectroscopic resource for characterizing fast and non-repetitive events that are currently inaccessible with other sources.
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