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Gigahertz frequency hopping in an optical phase-locked loop for Raman lasers

Chinese Physics B 2024年第2期33卷 60-65页

作者：毛德凯税鸿冕殷国玲彭鹏王春唯周小计 State Key Laboratory of Advanced optical Communication System and Network School of ElectronicsPeking UniversityBeijing 100871China Institute of Carbon-based Thin Film Electronics Peking UniversityTaiyuan 030012China State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China Institute of Advanced Functional Materials and Devices Shanxi UniversityTaiyuan 030031China

Raman lasers are essential in atomic physics,and the development of portable devices has posed requirements for time-division multiplexing of Raman *** demonstrate an innovative gigahertz frequency hopping approach of a slave Raman laser within an optical phase-locked loop(OPLL),which finds practical application in an atomic gravimeter,where the OPLL frequently switches between near-resonance lasers and significantly detuned Raman *** method merges the advantages of rapid and extensive frequency hopping with the OPLL’s inherent low phase noise,and exhibits a versatile range of applications in compact laser systems,promising advancements in portable instruments.

关键词： Raman lasers optical phase-locked loop frequency hopping

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Direct phase control method for binary phase-shift keying space coherent laser communication

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Chinese Optics Letters 2022年第6期20卷 1-6页

作者：任伟杰孙建锋侯培培韩荣磊贺红雨从海胜李超洋张龙坤姜玉鑫 Key Laboratory of Space Laser Communication and Detection Technology Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBejing 100049China Department of Aerospace Laser Engineering Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China

An optical phase locking method based on direct phase control is *** core of this method is to synchronize the carrier by directly changing the phase of the local *** corresponding experimental device and the supporting algorithm were configured to verify the feasibility of this *** locking can be completed without cycle skipping,and the acquisition time is 530 *** an optical preamplifier,a sensitivity of-34.4 d Bm is obtained,and the bit error rate is 10^(-9) for 2.5 Gbit/s binary phase-shift keying *** measured standard deviation of the phase error is 5.2805°.

关键词： space coherent laser communication direct phase control optical phase-locked loop IQ modulation

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