Passively Q-switched 2?m fiber laser with WO3 saturable absorber
Document Type
Article
Publication Date
1-1-2023
Abstract
We have successfully demonstrated a reliable and simple passively Q-switched Thulium-doped fiber laser (TDFL) utilizing tungsten oxide (WO3) as a saturable absorber (SA). The SA film was fabricated by embedding WO3 material into Polyvinyl alcohol (PVA) host polymer. The saturable absorption and saturation intensity of the fabricated WO3-based SA are about 20 % and 0.04 MW/cm2, respectively. The Q-switched TDFL pulses operate at a central wavelength 1960.2 nm with a 3 dB bandwidth of 1.4 nm, pulse duration of 2.32 mu s, maximum repetition rate of 64.27 kHz, maximum output power of 8.2 mW, and maximum pulse energy of 127.58 nJ. To our knowledge, this is the first time that WO3 has been used as a Q-switcher for operation in 2 mu m region.
Keywords
Q-switched, Embedding method, WO3, Thulium-doped fiber laser
Divisions
sch_ecs
Funders
None
Publication Title
Optical Fiber Technology
Volume
75
Publisher
Elsevier Science Inc
Publisher Location
STE 800, 230 PARK AVE, NEW YORK, NY 10169 USA