Pulse compression in Q-switched fiber laser by using platinum as saturable absorber

• Main Authors: Yuzaile, Yushazlina Roshaini, Awang, Noor Azura, Zalkepali, Noor Ummi Hazirah Hani, Zakaria, Zach, Abd Latif, Amirah, Azmi, Atiqah Nabieha, Abdul Hadi, F. S.
• Format: Article
• Language: English
• Published: Elsevier
• Online Access: http://psasir.upm.edu.my/id/eprint/83381/1/Pulse%20compression%20in%20Q-switched%20fiber%20laser%20by%20using%20platinum%20as%20saturable%20absorber.pdf; http://psasir.upm.edu.my/id/eprint/83381/; https://www.sciencedirect.com/science/article/abs/pii/S0030402618318023
• Institution: Universiti Putra Malaysia

This paper reported a successful demonstration on pulse compression in Q-switched fiber laser by using platinum, Pt as saturable absorber (SA). The Pt-SA is deposited through sputter deposition method. The modulation depth of Pt-SA is 46.5% with a saturation intensity of 1.4 MW cm⁻². The Pt-SA is integrated into the laser cavity to compress the pulse width in Q-switching operation. At the maximum pump power, only a small repetition rate of 29.2 kHz is needed to compress the pulse width to 1.8 μs. Meanwhile, the optical signal-to-noise ratio is about 43.0 dB. The Q-switched pulses have the maximum pulse energy of 6.5 nJ. Based on the findings, Pt has the ability to become an effective SA in generating Q-switched and pulse compression which may lead to further development of pulsed fiber laser.