摘要

设计了一种基于半导体激光器调制技术的978 nm纳秒脉冲掺镱全光纤激光器。该激光器采用主振荡功率放大结构，由调制半导体激光种子源和一级单模单包层掺镱光纤放大器组成。半导体激光种子源的光谱中心波长通过种子光自注入方式被定义为978.3 nm，调制之后的激光脉冲宽度为4.5 ns，重复频率在10~50 MHz范围内可调。当半导体激光种子源调制重复频率为50 MHz时，种子光被一级单包层掺镱光纤放大器放大至115 mW，相应的激光中心波长为978.3 nm，3 dB光谱带宽为0.11 nm，放大之后光谱中没有出现明显的放大自发辐射现象。

Abstract

Based on diode laser modulation technique, a 978 nm nanosecond-pulsed Yb-doped fiber laser is designed. The structure of the laser is master oscillator power amplifier. The laser system consists of the seed of modulated laser diode and one stage Yb-doped fiber amplifier with single-mode and single-cladding. The spectral central wavelength of laser diode seed is set as 978.3 nm by self-seeding. The laser pulse width after modulation is 4.5 ns and the repetition frequency is tunable at 10~50 MHz. The seed light is amplified to 115 mW by one stage Yb-doped fiber amplifier with single-cladding when the repetition frequency of laser diode seed modulation is 50 MHz. The corresponding central wavelength of the laser is 978.3 nm, 3 dB spectral bandwidth is 0.11 nm. The obvious amplified spontaneous emission does not appear in the spectrum after amplification.

补充资料

中图分类号：TN248

DOI：10.3788/cjl201643.0801005

所属栏目：激光器件与激光物理

基金项目：国家自然科学基金重大科研仪器研制项（61527822）、国家自然科学基金重点项目（61235010）

收稿日期：2015-12-07

修改稿日期：2016-04-20

网络出版日期：--

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联系人作者：周冠锐(zhouguanrui@126.com)

备注：周冠锐（1990—），男，硕士研究生，主要从事光纤激光器和光纤放大器方面的研究。

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引用该论文

Zhou Guanrui,Shi Hongxing,Jin Dongchen,Tan Fangzhou,Liu Jiang,Wang Qian,Wang Pu. Nanosecond-Pulsed Yb-Doped Fiber Laser at 978 nm Based on Diode Laser Modulation Technique[J]. Chinese Journal of Lasers, 2016, 43(8): 0801005

周冠锐,师红星,金东臣,谭方舟,刘江,王潜,王璞. 基于半导体激光器调制技术的978 nm纳秒脉冲掺镱光纤激光器[J]. 中国激光, 2016, 43(8): 0801005

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