量子电子学报, 2005, 22 (4): 607, 网络出版: 2006-05-15
可调谐单频掺镱光纤DBR激光器
Tunable single-frequency
光纤光学 全光纤激光器 调谐 分布布拉格反射 掺镱光纤 fiber optics all fiber laser tunability distributed Bragg reflection ytterbiumdoped fiber
摘要
对分布布拉格反射(DBR)的透射特性进行了分析,制作了一个单频窄线宽掺镱光纤DBR激光器.在977 nm半导体激光器泵浦下,在1052.5 nm波长处输出功率可达4 mW,线宽小于8 MHz(受测量仪器分辨率限制).采用弧形梁调谐光纤光栅,实现了DBR光纤激光器在单纵模工作状态下的连续调谐,调谐范围可达20.4 nm(1036.1~1056.5 nm),并研究了调谐对激光器的泵浦阈值和斜率效率的影响.
Abstract
The characteristics of distributed Bragg reflector(DBR) cavity are analyzed. A narrow-linewidth single-frequency ytterbium-doped fiber DBR laser is fabricated. The laser is pumped by a semiconductor laser operated at 977 nm. Its output power reaches 4 mW and the lasing linewidth is less than 8 MHz (instrument resolution limited) at free wavelength of 1052.5 nm. Up to 20.4 nm(1036.1-1056.5 nm) continuous tuning is demonstrated from this DBR fiber laser operating in single longitudinal mode using a simple beam bending tuning technique for axial extension and compression. Over the full tuning range, threshold pump power and slope efficiency vary with laser wavelength.
王安廷, 李锋, 黄晶, 顾春, 吕新杰, 明海, 谢建平. 可调谐单频掺镱光纤DBR激光器[J]. 量子电子学报, 2005, 22(4): 607. 王安廷, 李锋, 黄晶, 顾春, 吕新杰, 明海, 谢建平. Tunable single-frequency[J]. Chinese Journal of Quantum Electronics, 2005, 22(4): 607.