Du Wenxiong, Xia Handing, Li Heping, Liu Cong, Wang Pinghe, Liu Yong
Appl Opt. 2017 Mar 20;56(9):2504-2509. doi: 10.1364/AO.56.002504.
We demonstrate a high-repetition-rate all-fiber soliton pulse laser mode-locked by the nonlinear polarization rotation technique. The laser cavity is effectively shortened by incorporating an optical integrated component possessing the hybrid functions of a polarization-dependent isolator, a wavelength-division multiplexer, and an output coupler. Resultant output soliton pulses have a fundamental repetition rate of 384 MHz, a 3-dB spectral bandwidth of 25.2 nm, and a dechirped pulse duration of 115 fs. By using an external power amplification and pulse recompression system, the average output power of the laser is boosted to 207 mW. The amplified pulses have a 2.33-ps duration, which is recompressed to 340 fs. Numerical simulations reproduce the generation of high-repetition-rate soliton pulses in the fiber laser. Such a simple and low-cost high-repetition-rate fiber laser is a potential laser source for various practical applications.
我们展示了一种通过非线性偏振旋转技术锁模的高重复率全光纤孤子脉冲激光器。通过并入具有偏振相关隔离器、波分复用器和输出耦合器混合功能的光学集成组件，有效缩短了激光腔。产生的输出孤子脉冲具有384 MHz的基本重复率、25.2 nm的3 dB光谱带宽以及115 fs的去啁啾脉冲持续时间。通过使用外部功率放大和脉冲再压缩系统，激光器的平均输出功率提高到207 mW。放大后的脉冲持续时间为2.33 ps，再压缩至340 fs。数值模拟再现了光纤激光器中高重复率孤子脉冲的产生。这种简单且低成本的高重复率光纤激光器是各种实际应用的潜在激光源。
