Abstract

We report continuous-wave single-pass second-harmonic generation (SHG) in 4µm-period 0.5-mm-thick backswitch-poled lithium niobate. Pump sources at 920–930 nm include both Ti:sapphire and diode-oscillator–amplifier lasers. SHG of a Ti:sapphire laser at 6.1%/W efficiency, producing 61 mW of power at 460 nm, is demonstrated in 50-mm-long periodically poled lithium niobate samples with a nonlinear coefficient deff9 pm/V, and 60 mW at 465 nm and 2.8%/W efficiency is obtained by SHG of a laser-diode source.

© 1999 Optical Society of America

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