Abstract

We demonstrate a high-power, narrowband pulsed source at 390nm by two stages of frequency doubling in periodically poled MgO:LiNbO3 and periodically poled KTiOPO4 of an amplified, passively mode-locked fiber laser. With a frequency quadrupling efficiency of 5.5% and a 0.1nm bandwidth, the 250mW ultraviolet source is a suitable compact pump source for many entanglement-based quantum information processing tasks.

© 2007 Optical Society of America

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