High-Efficiency Ho:YAP Pulse Laser Pumped at 1989 nm

A Tm:YAP laser with an output wavelength of 1989 nm was selected for the first time as the pump source of a Q-switched Ho:YAP laser. When the absorbed power was 30 W, an average power of 18.02 W with the pulse width of 104.2 ns acousto-optic (AO) Q-switched Ho:YAP laser was obtained at a repetition frequency of 10 kHz. The slope efficiency was 70.11%, and the optical-optical conversion efficiency was 43.03%. The output center wavelength was 2129.22 nm with the line width of 0.74 nm.

Automated summary

In this study, a Tm:YAP laser with an output wavelength of 1989 nm was utilized as the pump source for a Q-switched Ho:YAP laser, resulting in a high power and high efficiency pulse laser output. The obtained Ho:YAP laser had an average power of 18.02 W with a pulse width of 104.2 ns at a repetition frequency of 10 kHz, with a slope efficiency of 70.11% and an optical-optical conversion efficiency of 43.03%.