Diffraction limited TEM00 527 nm Nd:YLF laser with 17.2 W average output and 1.5 kHz repetition rate

Scaling to a higher-power green laser with good beam quality is a challenge for meeting the requirements of different industrial applications. An acousto-optic Q-switched TEM00 mode Nd:YLF laser using the master oscillator power amplifier (MOPA) technology is presented and demonstrated. Output power of 17.2 W and TEM00 mode laser of 527 nm at 1.5 kHz with a pulse energy of 11.5 mJ is achieved. The output green laser had a Gaussian spatial profile with beam quality factors of M-x(2) = 1.07 and M-y(2) = 1.15. Z-type end-pumping structures are used for the MOPA system to ensure laser power stability. The green laser power fluctuation is <0.3% based on 4 h measurement data. (C) 2022 Society of Photo-Optical Instrumentation Engineers (SPIE)

Automated summary

This article presents and demonstrates an acousto-optic Q-switched TEM00 mode Nd:YLF laser using the master oscillator power amplifier (MOPA) technology, achieving high-power green laser output with good beam quality and power stability.