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Comparative study on the intracavity frequency-doubling 532 nm laser based on gray-tracking- resistant KTP and conventional KTP

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Abstract

A comparative study of a frequency-doubling 532nm laser based on gray-tracking-resistant KTP (GTR-KTP) and conventional KTP is presented. The intracavity GTR-KTP was proved to have better temperature characteristics than that of conventional KTP. Within the normalized output power variation range of 0.8–1.0, GTR-KTP has a temperature tolerance of 35°C, broader than the 21°C obtained with conventional KTP. Under the laser diode (LD) pump power of 180W, the maximum average output power at 532nm was 40.6W for GTR-KTP at a repetition frequency of 10kHz. In the case of conventional KTP, the maximum available LD pump power was limited to 150W, with the corresponding maximum green average output power of 27.2W.

© 2009 Optical Society of America

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