27 February 2009 Highly stable UV-mode-locked lasers with an output power of 35 W at 355 nm
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Abstract
High power compact UV lasers with diffraction limited beam are required for industrial applications such as laser direct imaging, wafer inspection or photo voltaic. By use of a Nd:YVO4 oscillator with a Saturable Bragg Reflector and a single pass amplifier, 73 W output power in mode-locked operation at 80 MHz have been generated with high peak power. By use of two LBO crystals a third harmonic output power of 35 W at 355 nm was demonstrated with an M2 value of <1.2. This corresponds to 48% nonlinear conversion efficiency.
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Michael Mond, Holger Schoene, Andreas Diening, Guenter Hollemann, Wolf Seelert, "Highly stable UV-mode-locked lasers with an output power of 35 W at 355 nm", Proc. SPIE 7193, Solid State Lasers XVIII: Technology and Devices, 71930W (27 February 2009); doi: 10.1117/12.810988; https://doi.org/10.1117/12.810988
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