使用胶体硫化铅量子点可饱和吸收体的被动调Q掺铒光纤激光器。

Passively Q-switched Er-doped fiber lasers using colloidal PbS quantum dot saturable absorber.

作者信息

Lee Yin-Wen, Chen Chien-Ming, Huang Chia-Wei, Chen Shih-Ken, Jiang Jhang-Rong

出版信息

Opt Express. 2016 May 16;24(10):10675-81. doi: 10.1364/OE.24.010675.

DOI:10.1364/OE.24.010675

Abstract

We report on the demonstration of a passively Q-switched 1.55 µm fiber laser utilizing a colloidal PbS quantum dot (QD) thin film as a saturable absorber. Colloidal PbS QD films have several features that are advantageous in passively Q-switched fiber laser operation, including a large operation wavelength range, cost-effectiveness, and a low saturable absorption intensity. We conducted thorough material and optical studies to verify the advantages of PbS QDs in Q-switched laser operation and successfully generated 801 nJ pulses with a 24.2 kHz repetition rate. To the best of our knowledge, the developed Q-switched fiber laser is the first based on colloidal PbS QDs.

摘要

我们报道了一种被动调Q的1.55μm光纤激光器的演示，该激光器利用胶体硫化铅量子点（QD）薄膜作为饱和吸收体。胶体硫化铅量子点薄膜具有几个在被动调Q光纤激光器运行中有利的特性，包括较大的工作波长范围、成本效益以及低饱和吸收强度。我们进行了全面的材料和光学研究，以验证硫化铅量子点在调Q激光运行中的优势，并成功产生了重复频率为24.2kHz、能量为801nJ的脉冲。据我们所知，所开发的调Q光纤激光器是首个基于胶体硫化铅量子点的激光器。