中国激光, 2014, 41 (8): 0802004, 网络出版: 2014-06-24
186 MHz低幅度噪声掺铒光纤飞秒激光器 下载: 549次
186 MHz Low Amplitude Noise Erbium-Doped-Fiber Femtosecond Laser
激光器 光纤激光器 锁模激光器 幅度噪声 频率稳定度 lasers fiber lasers mode-locked lasers amplitude noise frequency stability
摘要
飞秒激光器是激光频率测量系统——飞秒光梳的核心部件,其噪声、重复频率、脉冲宽度、光谱等参数决定了它在应用中的表现。报道了用于9.2 GHz基于光学腔超稳微波源的掺铒光纤飞秒激光器的研制。该激光器采用环形腔结构,重复频率为186 MHz,直接输出功率为120 mW,光谱中心波长为1550~1600 nm。采用动态信号分析仪测试了双边带噪声功率谱,结果显示:研制的飞秒激光器自由运转时,1 Hz处双边带幅度噪声为-118 dBc/Hz,在10 Hz到100 kHz频率范围内幅度噪声小于-130 dBc/Hz。
Abstract
Femtosecond laser is the most important part of an optical frequency comb, whose performance is mainly determined by the laser′s noise level, repetition rate, pulse width, spectrum and other parameters. A home-made erbium-doped-fiber femtosecond laser with ring structure and a repetition rate of 186 MHz is reported. This laser is designed for 9.2 GHz ultra-stable photonics microwave generation. The laser has an output power of 120 mW, and its spectrum center wavelength is in the range from 1550 nm to 1600 nm. The double-sideband relative intensity noise of the laser is -118 dBc/Hz at 1 Hz measured with a signal dynamic analyzer. From 10 Hz to 100 kHz, the relative intensity noise level is well below -130 dBc/Hz.
闫露露, 张颜艳, 赵文宇, 孟森, 郑恩让, 郭文阁, 姜海峰, 张首刚. 186 MHz低幅度噪声掺铒光纤飞秒激光器[J]. 中国激光, 2014, 41(8): 0802004. Yan Lulu, Zhang Yanyan, Zhao Wenyu, Meng Sen, Zheng Enrang, Guo Wenge, Jiang Haifeng, Zhang Shougang. 186 MHz Low Amplitude Noise Erbium-Doped-Fiber Femtosecond Laser[J]. Chinese Journal of Lasers, 2014, 41(8): 0802004.