Simple all-PM-fiber laser mode-locked with a nonlinear loop mirror

被引:134
作者
Szczepanek, Jan [1 ]
Kardas, Tomasz M. [1 ]
Michalska, Maria [2 ]
Radzewicz, Czeslaw [1 ]
Stepanenko, Yuriy [1 ,3 ]
机构
[1] Univ Warsaw, Inst Expt Phys, Dept Phys, PL-02093 Warsaw, Poland
[2] Mil Univ Technol, Inst Optoelect, PL-00908 Warsaw, Poland
[3] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland
关键词
NORMAL-DISPERSION; DISSIPATIVE SOLITONS; PULSES; OSCILLATOR;
D O I
10.1364/OL.40.003500
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this Letter, we present a figure-eight all-PM-fiber laser oscillator design with a nonlinear optical loop mirror as an artificial saturable absorber. Unlike previous constructions using the same mode-locking technique, our cavity is constructed entirely of polarization-maintaining (PM) fibers, making the oscillator more resistant to thermal and mechanical perturbations. Two simple and robust laser configurations that differ by the output coupling ratio (70% or 30%) are presented. The first configuration delivers high energy pulses of 3.5 nJ, and the second configuration delivers pulses of 1.6 nJ at a common repetition rate of 15 MHz. In either configuration, the pulsed operation is stable, and the laser operates in a single pulse train regime, even for pump powers approaching twice the power required for mode-locking. We have also observed that, at higher intracavity powers, stimulated Raman scattering plays a significant role. (C) 2015 Optical Society of America
引用
收藏
页码:3500 / 3503
页数:4
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