Multiwavelength Q-switched pulse operation with gold nanoparticles as saturable absorber

Shi Li; Yu Yin; Elfed Lewis; Gerald Farrell; Masaki Tokurukawa; Ahmad Haziq Aiman Rosol; Sulaiman W. Harun; Pengfei Wang

doi:10.1117/1.OE.58.6.066104

8 June 2019 Multiwavelength Q-switched pulse operation with gold nanoparticles as saturable absorber

Shi Li, Yu Yin, Elfed Lewis, Gerald Farrell, Masaki Tokurukawa, Ahmad Haziq Aiman Rosol, Sulaiman W. Harun, Pengfei Wang

Author Affiliations +

Funded by: National Key R&D Program of China, National Natural Science Foundation of China (NSFC), Fundamental Research Funds for the Central Universities, Natural Science Foundation of Heilongjiang Province, Open Fund of the State Key Laboratory on Integrated Optoelectronics, 111 project, Harbin Engineering University

Optical Engineering, Vol. 58, Issue 6, 066104 (June 2019). https://doi.org/10.1117/1.OE.58.6.066104

Abstract

A multiwavelength Q-switched pulse operation obtained directly using a Tm-doped fiber laser and employing gold nanoparticles (GNPs) as a saturable absorber (SA material) is reported. The GNPs SA exhibits a modulation depth of 5.4% and a nonsaturable loss of 21.3%. Due to the saturable absorption and the high nonlinearity, dual-wavelength and triple-wavelength Q-switched pulse operations are obtained at pump power levels of 200 and 500 mW. To the best of our knowledge, this is the first ever reported use of GNPs as SA in multiwavelength Q-switched lasing generation.

Citation Download Citation

Shi Li, Yu Yin, Elfed Lewis, Gerald Farrell, Masaki Tokurukawa, Ahmad Haziq Aiman Rosol, Sulaiman W. Harun, and Pengfei Wang "Multiwavelength Q-switched pulse operation with gold nanoparticles as saturable absorber," Optical Engineering 58(6), 066104 (8 June 2019). https://doi.org/10.1117/1.OE.58.6.066104

Received: 11 April 2019; Accepted: 14 May 2019; Published: 8 June 2019

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