Efficient Blue Laser Generation At 473 Nm By A Bibo Crystal

It is reported that efficient blue laser generation at 473 nm in a BIBO crystal at type-I phase matching direction of (theta, phi) = (18.3degrees, 90degrees) performed with a diode-pumped Nd:YAG laser. With incident pump power of 1.6 W, output power of 183 mW at 473 nm has been obtained using a 5.0 mm-long BIBO crystal. The optical conversion efficiency was up to 11.4%. It was found that the intracavity frequency doubling efficiency is about 50% greater than that obtained with a 10 mm-long type-I phase-matching LBO crystal. (C) 2003 Elsevier Ltd. All rights reserved.