Two-octave frequency combs from an all-silicafiber implementation  

作　　者：YANYAN ZHANG MINGKUN LI PAN ZHANG YUEQING DU SHIBANG MA YUANSHAN LIU SIDA XING SHOUGANG ZHANG 

机构地区：[1]School of Artificial Intelligence,Optics and Electronics,Northwestern Polytechnical University,Xi’an 710072,China [2]Research&Development Institute of Northwestern Polytechnical University in Shenzhen,Shenzhen 518063,China [3]National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,China [4]School of Physical Science and Technology,Northwestern Polytechnical University,Xi’an 710129,China [5]Xi’an Institute of Applied Optics,Xi’an 710065,China [6]Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China

出　　处：《Photonics Research》2024年第10期2115-2122,共8页光子学研究（英文版）

基　　金：The Science and Technology Commission of Shanghai Municipality;Shenzhen Science and Technology Program(2023A1515012285);Strategic Priority Research Program of the Chinese Academy of Sciences(XDB35030101);Fundamental Research Funds for the Central Universities(23GH030508);Mathematical Basic Science Research Project of Shaanxi(22JSQ039);NaturalScience Basic Research Program of Shaanxi Province(2023-JCYB-502);National Natural Science Foundation of China(62275236,62305270)。

摘　　要：Mid-infrared frequency-comb spectroscopy enables measurement of molecules at megahertz spectral resolution,sub-hertz frequency accuracy,and microsecond acquisition speed.However,the widespread adoption of this technique has been hindered by the complexity and alignment sensitivity of mid-infrared frequency-comb sources.Leveraging the underexplored mid-infrared window of silica fibers presents a promising approach to address these challenges.In this study,we present the first,to the best of our knowledge,experimental demonstration and quantitative numerical description of mid-infrared frequency-comb generation in silica fibers.Our all-silica-fiber frequency comb spans over two octaves(0.8μm to 3.4μm)with a power output of 100 mW in the mid-infrared region.The amplified quantum noise is suppressed using four-cycle(25 fs)driving pulses,with the carrier-envelope offset frequency exhibiting a signal-to-noise ratio of 40 dB and a free-running bandwidth of 90 kHz.Our developed model provides quantitative guidelines for mid-infrared frequency-comb generation in silica fibers,enabling all-fiber frequency-comb spectroscopy in diverse fields such as organic synthesis,pharmacokinetics processes,and environmental monitoring.

关 键 词：FIBER SILICA fibers 

分 类 号：O433[机械工程—光学工程]