Open AccessMulti-layered black phosphorus as saturable absorber for pulsed Cr:ZnSe laser at 24 μm
Author(s) -
Zhaowei Wang,
Ruwei Zhao,
Jingliang He,
Baitao Zhang,
Jian Ning,
Yiran Wang,
Xiancui Su,
Jia Hou,
Fei Lou,
Kejian Yang,
Yisong Fan,
Jintian Bian,
Jinsong Nie
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.001598
Subject(s) - saturable absorption , materials science , black phosphorus , exfoliation joint , optics , laser , saturation (graph theory) , q switching , pulse (music) , optoelectronics , wavelength , fiber laser , physics , graphene , mathematics , combinatorics , detector , nanotechnology
A high-quality black phosphorus (BP) saturable-absorber mirror (SAM) was successfully fabricated with the multi-layered BP, prepared by liquid-phase exfoliation (LPE) method. The modulation depth and saturation power intensity of BP absorber were measured to be 10.7% and 0.96 MW/cm(2), respectively. Using the BP-SAM, we experimentally demonstrated the mid-infrared (mid-IR) pulse generation from a BP Q-switched Cr:ZnSe laser for the first time to our best knowledge. Stable Q-switched pulse as short as 189 ns with an average output power of 36 mW was realized at 2.4 μm, corresponding to a repetition rate of 176 kHz and a single pulse energy of 205 nJ. Our work sufficiently validated that multi-layer BP could be used as an optical modulator for mid-IR pulse laser sources.