Q-Switched Ytterbium-Doped Fiber Laser Using Black Phosphorus as Saturable Absorber
Document Type
Article
Publication Date
1-1-2016
Abstract
We demonstrate a Q-switched ytterbium-doped fiber laser (YDFL) using a newly developed multi-layer black phosphorous (BP) saturable absorber (SA). The BP SA is prepared by mechanically exfoliating a BP crystal and sticking the acquired BP flakes onto a scotch tape. A small piece of the tape is then placed between two ferrules and incorporated in a YDFL cavity to achieve a stable Q-switched operation in a 1.0.m region. The laser has a pump threshold of 55.1mW, a pulse repetition rate that is tunable from 8.2 to 32.9 kHz, and the narrowest pulse width of 10.8.s. The highest pulse energy of 328 nJ is achieved at the pump power of 97.6mW. Our results show that multi-layer BP is a promising SA for Q-switching laser operation.
Keywords
Q-switched ytterbium-doped fiber laser (YDFL), Black phosphorous (BP), Saturable absorber (SA)
Divisions
fac_eng
Publication Title
Chinese Physics Letters
Volume
33
Issue
5
Publisher
Institute of Physics