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Single-walled carbon nanotubes-chitin based saturable absorber for enhanced 1.5-micron Q-switching laser generation

NUR NASYITAH MD RAHIM1, SITI NUR FATIN ZUIKAFLY1, SULAIMAN WADI HARUN2, HAFIZAL YAHAYA1, FAUZAN AHMAD1,*

Affiliation

  1. Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur, Malaysia
  2. Photonics Engineering Laboratory, Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia

Abstract

In order to produce Q-switched laser pulses, this study sought to illustrate and assess the synergistic effect of passive saturable absorber (SA) based on single-walled carbon nanotubes (SWCNT) in chitin as the host polymer. This work describes the use of SWCNT-chitin SA to generate a Q-switched pulsed laser that operates at 1530.61 nm. The SWCNT-chitin achieved a highest repetition rate of 154.80 kHz and shortest pulse width of 2.34 µs, at maximum input pump power of 273.52 mW. This study highlights chitin as a promising natural host polymer, offering a compelling alternative to synthetics polymers such as polyvinyl alcohol (PVA), and polyethylene oxide (PEO)..

Keywords

: Saturable absorber, Single-walled carbon nanotubes, Chitin, Q-switched, Erbium-doped fiber laser.

Submitted at: Oct. 9, 2024
Accepted at: June 4, 2025

Citation

NUR NASYITAH MD RAHIM, SITI NUR FATIN ZUIKAFLY, SULAIMAN WADI HARUN, HAFIZAL YAHAYA, FAUZAN AHMAD, Single-walled carbon nanotubes-chitin based saturable absorber for enhanced 1.5-micron Q-switching laser generation, Journal of Optoelectronics and Advanced Materials Vol. 27, Iss. 5-6, pp. 187-191 (2025)