Q-switched fiber-laser using a novel rotary mirror

被引：0

作者：

Chin, Aland K. ^{[1
]}

Morse, Theodore F. ^{[2
]}

Luo, Fei ^{[2
]}

机构：

[1] Morse Chin Grp LLC, PH 309, One Devonshire Pl, Boston, MA 02109 USA

[2] ECE Photon Ctr, Lab Lightwave Technol, Boston, MA 02115 USA

来源：

FIBER LASERS IV: TECHNOLOGY, SYSTEMS, AND APPLICATIONS | 2007年 / 6453卷

关键词：

fiber laser; q-switch; rotary mirror; rotating mirror;

D O I：

10.1117/12.697675

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simple Q-switch, consisting of a rotating planar-mirror where the reflectivity of portions of the surface are high and the reflectivity of the remaining portions are low, is reported. This novel Q-switch is demonstrated using a fiber laser. Using two meters of single-mode, 5 gin core, Yb-doped fiber, a 40% fiber Bragg-grating (FBG) at 1064 nm, and a single-mode diode-pump at 976 nm, a fiber laser with a threshold power and slope efficiency of approximately 25 mW and 33% was achieved, respectively, with the rotary mirror held stationary at the high-reflectivity region to form part of the laser cavity. With the mirror rotating at a fixed speed of 7200 rpm, pulses with a 140 ns full-width-half-maximum (FWHM) at a repetition rate of 480 Hz were observed. At an optical pump-power of 80 mW, the average power from the Q-switched fiber laser was 3.5 mW resulting in a calculated, peak pulse-power of 48.6 W.

引用

页数：5