To improve the frequency-doubling efficiency in type II second-harmonic generation (SHG), a fundamental walkoff-compensated SHG scheme was geometrically analyzed and its usefulness was experimentally demonstrated in a 12-mm length of KTiOPO<sub>4</sub> with 20% power enhancement and in a 10-mm length of LiB<sub>3</sub>O<sub>5</sub> with double enhancement.
© 1998 Optical Society of America
Katsu Asaumi, "Fundamental Walkoff-Compensated Type II Second-Harmonic Generation in KTiOPO4 and LiB3O5," Appl. Opt. 37, 555-560 (1998)