2.3 μm nanosecond passive Q-switching of an LD-pumped Tm:YLF laser using gold nanorods as a saturable absorber

Fu-yan WU; Shi-qiang WANG; Hai-wei CHEN; Hai-tao HUANG

doi:10.1631/FITEE.2000110

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Front. Inform. Technol. Electron. Eng ›› 2021, Vol. 22 ›› Issue (3) : 312-317. DOI: 10.1631/FITEE.2000110

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2.3 μm nanosecond passive Q-switching of an LD-pumped Tm:YLF laser using gold nanorods as a saturable absorber

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Abstract

Developing new saturable absorbers for use in the mid-infrared region has practical significance for short-pulsed lasers and related scientific and industrial applications. The performance of gold nanorods (GNRs) as saturable absorbers at novel mid-infrared wavelengths needs to be evaluated even though these benefit from ultrafast nonlinear responses and broadband saturable absorption. Passive Q-switching of an LD-pumped 2.3 μm Tm:YLF laser using GNRs was successfully realized in this study. Pulses with an 843 ns pulse width and a 6.67 kHz repetition rate were achieved using this Q-switched laser. Results showed that GNRs provide promising passive Q-switches for 2.3 μm Tm-doped lasers.

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Gold nanorods / Passive Q-switching / 2.3 μm / Tm-doped laser materials

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Fu-yan WU, Shi-qiang WANG, Hai-wei CHEN, Hai-tao HUANG. 2.3 μm nanosecond passive Q-switching of an LD-pumped Tm:YLF laser using gold nanorods as a saturable absorber. Front. Inform. Technol. Electron. Eng, 2021, 22(3): 312‒317 https://doi.org/10.1631/FITEE.2000110