Passively Q-switched 2 µm fiber laser with WO3 saturable absorber

Ahmed Shakir Al-Hiti; Hiba Hassan; M. Yasin; S. W. Harun

doi:10.1016/j.yofte.2022.103193

Passively Q-switched 2 µm fiber laser with WO₃ saturable absorber

Ahmed Shakir Al-Hiti, Hiba Hassan, M. Yasin, S. W. Harun

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

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 μs, 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 μm region.

Original language	English
Article number	103193
Journal	Optical Fiber Technology
Volume	75
DOIs	https://doi.org/10.1016/j.yofte.2022.103193
Publication status	Published - Jan 2023

Keywords

Embedding method
Q-switched
Thulium-doped fiber laser
WO

Access to Document

10.1016/j.yofte.2022.103193

Cite this

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title = "Passively Q-switched 2 µm fiber laser with WO3 saturable absorber",

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 μs, 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 μm region.",

keywords = "Embedding method, Q-switched, Thulium-doped fiber laser, WO",

author = "{Shakir Al-Hiti}, Ahmed and Hiba Hassan and M. Yasin and Harun, {S. W.}",

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AU - Shakir Al-Hiti, Ahmed

AU - Hassan, Hiba

AU - Yasin, M.

AU - Harun, S. W.

PY - 2023/1

Y1 - 2023/1

N2 - 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 μs, 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 μm region.

AB - 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 μs, 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 μm region.

KW - Embedding method

KW - Q-switched

KW - Thulium-doped fiber laser

KW - WO

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