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9.2GHz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186MHz,直接输出功率为120mW,光谱中心波长为1550~1600nm。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-118dBc/Hz,在10Hz到100kHz频率范围内幅度噪声小于-130dBc/Hz。
Femtosecond laser is the most important part of an optical frequency comb, whose performance is mainly determined by the laserrs 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.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2014年第8期17-20,共4页
Chinese Journal of Lasers
基金
国家自然科学基金(91336101
61127901
61025023)
西部之光重点项目(2013ZD02)
