中国光学（中英文）2025，Vol.18Issue(6)：1289-1297,9.DOI:10.37188/CO.2025-0071
低噪声宽调谐1018nm分布式布拉格反射窄线宽单频光纤激光器
Low-noise wide tuning 1018-nm DBR narrow-linewidth single-frequency fiber laser
摘要
Abstract
Addressing the urgent demand for 1018 nm single-frequency seed sources in Rydberg microwave measurements,we have developed a wide tuning 1018 nm single-frequency fiber laser with a linewidth of 810 Hz and a relative intensity noise below-140 dB/Hz.The laser employs a distributed Bragg reflector(DBR)structure with an 8-mm-long ytterbium-doped fiber and incorporates a high-stability active temperat-ure control system and a piezoelectric ceramic(PZT)-based fast frequency tuning device.The temperature control range was from 10℃ to 80℃,with the temperature fluctuation of the DBR resonance cavity was only±0.0005℃ within 2 hours at a controlled temperature of 25℃.Through experimental testing,the laser maintains single-longitudinal-mode output at 25℃,with a linewidth of 810 Hz,a temperature tuning range exceeding 0.9 nm,and a PZT-based fast-tuning range of up to 10 GHz,without any mode-hopping during the tuning process.The relative intensity noise of a single-frequency laser is-150 dB/Hz in the low-frequency band of 1 kHz,and remains below-140 dB/Hz for frequencies greater than 1.5 MHz.This result shows that the laser achieves both low-noise output and wide tuning.关键词
低噪声/宽调谐/高稳定温控/PZT驱动/光纤激光器Key words
low noise/wide tuning/high stability temperature control/PZT driver/fiber lasers分类
信息技术与安全科学引用本文复制引用
于龙昆,肖鑫,余世淏,李磐,罗子人..低噪声宽调谐1018nm分布式布拉格反射窄线宽单频光纤激光器[J].中国光学（中英文）,2025,18(6):1289-1297,9.基金项目
国家重点研发计划(No.2021YFC2201803) （No.2021YFC2201803）
国家自然科学基金(No.42165007)Supported by National Key Research and Development Program(No.2021YFC2201803) （No.42165007）
National Natural Science Foundation of China(No.42165007) （No.42165007）
