Chinese Optics Letters, 2006, 4 (11): 655, Published Online: Nov. 17, 2006
Dual-wavelength stable nanosecond pulses generation from cladding-pumped fiber laser
光纤激光器 受激布里渊散射 纳秒脉冲 双折射 140.3510 Lasers, fiber 290.5900 Scattering, stimulated Brillouin 320.4240 Nanosecond phenomena 260.1440 Birefringence
Abstract
In this paper, the generation of dual-wavelength stable nanosecond pulses by a laser diode pumped Yb-doped double-clad fiber laser is presented. In the experiment, the fiber laser with two-mirror cavity is approved which operates in a self-Q-switching regime. The Q-switching mechanism is based on stimulated Brillouin scattering (SBS). When the pump power achieves the SBS threshold, the fiber laser changes from the start resonator to the SBS resonator. With different reflectivities of the second mirror, stable dual-wavelength pulses with the pulse width range from 10 ns to less than 2 ns are obtained. The result was explained theoretically by birefringency (including stochastic birefringency and bend birefringency).
Shuling Hu, Jing Yu, Chunqing Gao, Guanghui Wei, Fuyun Lv. Dual-wavelength stable nanosecond pulses generation from cladding-pumped fiber laser[J]. Chinese Optics Letters, 2006, 4(11): 655.