摘要
对半导体激光器进行调制得到了中心波长为1060.14nm、谱宽为0.63nm、重复频率为1.55 MHz、脉宽为11ns的纳秒种子激光,进而对其进行三级主振荡功率放大(MOPA),实现了18.2W高功率、高重复频率纳秒光纤激光器。利用此纳秒光纤激光器及自主研制的光纤模场适配器,抽运145m锥形光子晶体光纤,实现了最大输出功率为2.2W的全光纤化白光超连续谱光源,光谱范围为440~1700nm,在整个光谱可探测范围内具有15dB的光谱平坦度。
By modulating the laser diode, a nanosecond laser with center wavelength of 1064.14 nm, spectral width of 0.63 nm, repetition frequency of 1.55 MHz and pulse width of 11 ns is realized. This seed laser is then amplified to a high-power, high-repetition rate nanosecond fiber laser with an average output power of 18.2 W using a tri-stage master oscillator power amplifier (MOPA) configuration. This nanosecond fiber laser is used to pump a 145 m long tapered photonic crystal fiber with a self-made mode field adaptor (MFA), and a 2. 2 W all-fiber white light supercontinuum source is realized with a 15 dB spectral flatness in the detected spectral range from 440 nm to 1700 nm. The spectral edge also corresponds well with the theoretical value.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2013年第4期123-128,共6页
Chinese Journal of Lasers
基金
国家973计划(2010CB735904)
国家自然科学基金(61275144)
教育部博士点基金(20104408110002)
深圳市科技研发基金基础研究计划(JC201005250048A
1104300029783024)
深圳大学科研基金资助面上项目(201203)资助课题
关键词
激光器
主振荡功率放大
纳秒光纤激光器
锥形光子晶体光纤
超连续谱
lasers
master oscillator power amplifier
nanosecond fiber laser
tapered photonic crystal fiber
supercontinuum