Tungsten trioxide (WO3) film absorber for generating soliton mode-locked pulses in erbium laser

Ahmed Shakir Al-Hiti; A. H.H. Al-Masoodi; S. W. Harun; M. Yasin; Wei Ru Wong

doi:10.1016/j.optlastec.2020.106429

Tungsten trioxide (WO₃) film absorber for generating soliton mode-locked pulses in erbium laser

Ahmed Shakir Al-Hiti, A. H.H. Al-Masoodi, S. W. Harun, M. Yasin, Wei Ru Wong

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

31 Citations (Scopus)

Abstract

We proposed a new type of passive saturable absorber (SA) based on tungsten trioxide (WO₃)- polyvinyl alcohol (PVA) film for generation of soliton mode-locked pulse in the erbium-doped fiber laser (EDFL) cavity. The WO₃-PVA has a modulation depth of 20% with a saturable intensity of 0.04 W/cm². The new SA film was integrated into the cavity to realize a stable mode-locked pulses operating at 1565.08 nm within a pump power range from 50 mW to 225 mW. The pulse repetition rate and pulse width of the soliton laser was 1.85 MHz and 2.69 ps, respectively. The pulse energy of 1.14 nJ and peak power of 0.67 kW were obtained at the maximum input pump power of 225 mW. These results indicate that WO₃ is a promising nonlinear optical material for application in generating ultra-fast mode-locked laser. This is the first time that WO₃ was utilized as SA in the 1.5 μm region.

Original language	English
Article number	106429
Journal	Optics and Laser Technology
Volume	131
DOIs	https://doi.org/10.1016/j.optlastec.2020.106429
Publication status	Published - Nov 2020

Keywords

EDF laser
Mode-locked
Saturable absorber
WO

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10.1016/j.optlastec.2020.106429

Cite this

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title = "Tungsten trioxide (WO3) film absorber for generating soliton mode-locked pulses in erbium laser",

abstract = "We proposed a new type of passive saturable absorber (SA) based on tungsten trioxide (WO3)- polyvinyl alcohol (PVA) film for generation of soliton mode-locked pulse in the erbium-doped fiber laser (EDFL) cavity. The WO3-PVA has a modulation depth of 20% with a saturable intensity of 0.04 W/cm2. The new SA film was integrated into the cavity to realize a stable mode-locked pulses operating at 1565.08 nm within a pump power range from 50 mW to 225 mW. The pulse repetition rate and pulse width of the soliton laser was 1.85 MHz and 2.69 ps, respectively. The pulse energy of 1.14 nJ and peak power of 0.67 kW were obtained at the maximum input pump power of 225 mW. These results indicate that WO3 is a promising nonlinear optical material for application in generating ultra-fast mode-locked laser. This is the first time that WO3 was utilized as SA in the 1.5 μm region.",

keywords = "EDF laser, Mode-locked, Saturable absorber, WO",

author = "Al-Hiti, {Ahmed Shakir} and Al-Masoodi, {A. H.H.} and Harun, {S. W.} and M. Yasin and Wong, {Wei Ru}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = nov,

doi = "10.1016/j.optlastec.2020.106429",

language = "English",

volume = "131",

journal = "Optics and Laser Technology",

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T1 - Tungsten trioxide (WO3) film absorber for generating soliton mode-locked pulses in erbium laser

AU - Al-Hiti, Ahmed Shakir

AU - Al-Masoodi, A. H.H.

AU - Harun, S. W.

AU - Yasin, M.

AU - Wong, Wei Ru

PY - 2020/11

Y1 - 2020/11

N2 - We proposed a new type of passive saturable absorber (SA) based on tungsten trioxide (WO3)- polyvinyl alcohol (PVA) film for generation of soliton mode-locked pulse in the erbium-doped fiber laser (EDFL) cavity. The WO3-PVA has a modulation depth of 20% with a saturable intensity of 0.04 W/cm2. The new SA film was integrated into the cavity to realize a stable mode-locked pulses operating at 1565.08 nm within a pump power range from 50 mW to 225 mW. The pulse repetition rate and pulse width of the soliton laser was 1.85 MHz and 2.69 ps, respectively. The pulse energy of 1.14 nJ and peak power of 0.67 kW were obtained at the maximum input pump power of 225 mW. These results indicate that WO3 is a promising nonlinear optical material for application in generating ultra-fast mode-locked laser. This is the first time that WO3 was utilized as SA in the 1.5 μm region.

AB - We proposed a new type of passive saturable absorber (SA) based on tungsten trioxide (WO3)- polyvinyl alcohol (PVA) film for generation of soliton mode-locked pulse in the erbium-doped fiber laser (EDFL) cavity. The WO3-PVA has a modulation depth of 20% with a saturable intensity of 0.04 W/cm2. The new SA film was integrated into the cavity to realize a stable mode-locked pulses operating at 1565.08 nm within a pump power range from 50 mW to 225 mW. The pulse repetition rate and pulse width of the soliton laser was 1.85 MHz and 2.69 ps, respectively. The pulse energy of 1.14 nJ and peak power of 0.67 kW were obtained at the maximum input pump power of 225 mW. These results indicate that WO3 is a promising nonlinear optical material for application in generating ultra-fast mode-locked laser. This is the first time that WO3 was utilized as SA in the 1.5 μm region.

KW - EDF laser

KW - Mode-locked

KW - Saturable absorber

KW - WO

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JO - Optics and Laser Technology

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