Whispering-gallery-mode barcode-based broadband sub-femtometer-resolution spectroscopy with an electro-optic frequency comb

作     者：Bingxin Xu Yangyang Wan Xinyu Fan Zuyuan He Bingxin Xu;Yangyang Wan;Xinyu Fan;Zuyuan He

作者机构：Shanghai Jiao Tong UniversityState Key Laboratory of Advanced Optical Communication Systems and NetworksDepartment of Electronic EngineeringShanghaiChina Max-Planck Institute of Quantum OpticsHans-Kopfermann-Straûe 185748 GarchingGermany 

出 版 物：《Advanced Photonics》 (先进光子学（英文）)

年 卷 期：2024年第6卷第1期

页      面：115-125页

核心收录：

学科分类：07[理学] 070302[理学-分析化学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China (NSFC) (Grant No. 62275151) 

主　　题：frequency comb reconstructive wavemeter spectroscopy 

摘      要：Spectroscopy is the basic tool for studying molecular physics and realizing biochemical ***,it is challenging to realize sub-femtometer resolution spectroscopy over broad *** and high-resolution spectroscopy with calibrated optical frequency is demonstrated by bridging the fields of speckle pattern and electro-optic frequency comb.A wavemeter based on a whispering-gallery-mode barcode is proposed to link the frequencies of a probe continuous-wave laser and an ultrastable *** ultrafine electro-optic comb lines are generated from the probe laser to record spectrum of sample with sub-femtometer *** bandwidth is a thousandfold broader than comb bandwidth,by sequentially tuning the probe laser while its wavelength is *** approach fully exploits the advantages of two fields to realize 0.8-fm resolution with a fiber laser and 80-nm bandwidth with an external cavity diode *** spectroscopic measurements of an ultrahigh Q-factor cavity and gas molecular absorption are experimentally *** compact system,predominantly constituted by few-gigahertz electronics and telecommunication components,shows enormous potential for practical spectroscopic applications.