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28 February 2014 >220W output power at 355nm from a Q-switched diode-pumped solid-state laser
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We demonstrate 220 W average power at 355 nm from a diode-pumped acousto-optically Q-switched Nd:YAG laser using intracavity second harmonic generation and sum frequency mixing in a nested sub-cavity design. The laser generates linearly polarised pulses with duration 65 ns at repetition rate 10 kHz. Polarisation multiplexing is used to combine two orthogonal beams giving total output pulse energy 22 mJ with peak power <0.3 MW in an unpolarised multimode beam with smooth gaussian-like transverse intensity distribution. The combination of high peak power and high average power in a multimode beam enables the use of low maintenance, low cost of ownership DPSS lasers for high-throughput industrial processes in the UV.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Nick Hay, Nerijus Slavinskis, Aleksej M. Rodin, and Young Key Kwon ">220W output power at 355nm from a Q-switched diode-pumped solid-state laser", Proc. SPIE 8959, Solid State Lasers XXIII: Technology and Devices, 89590M (28 February 2014);

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