Journal
INFRARED PHYSICS & TECHNOLOGY
Volume 116, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.infrared.2021.103788
Keywords
Q-switched; Erbium-doped fiber laser; Saturable absorber; Energy efficiency
Categories
Funding
- University of Malaya [ML001-2017B]
- Fundamental Research Grant (2021) through Airlangga University
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This study successfully demonstrated the generation of Q-switched pulses using a PEDOT: PSS film as SA, with a low preparation cost and high pulse energy, repetition rate, and pulse width.
Q-switched Erbium-doped fiber laser (EDFL) was demonstrated utilizing poly(3,4 ethylenedioxythiophene): poly (4-styrenesulfonate) (PEDOT: PSS) as saturable absorber (SA). The proposed film was fabricated by mixing the PEDOT: PSS with polyvinyl alcohol (PVA). The nonlinear characterization was demonstrated, revealing a saturable absorption of 50%, a saturation intensity of 0.14 MW/cm2. and a non-saturable absorption of 44%. The SA was incorporated into a laser configuration to operate as a new passive Q-switcher for nanosecond pulse generation. The Q-switched laser operated at 1568.03 nm with a 3-dB bandwidth of 2.66 nm. The maximum pulse energy, high repetition rate, and minimum pulse width were obtained at 192.11 nJ, 108.69 kHz, and 580 ns, respectively. The nonlinear characterization was demonstrated, revealing a saturable absorption of 50%, a saturation intensity of 0.14 MW/cm2. and a non-saturable absorption of 44%. This is the first demonstration of utilizing PEDOT: PSS film as SA with an inexpensive preparation process to generate Q-switched pulses.
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