We have demonstrated two continuous-wave nonlinear processes: third-harmonic generation (THG) of 1064-nm radiation with a lithium triborate (LBO) crystal, and second-harmonic generation of 696-nm radiation in deuterated rubidium dihydrogen arsenate. With 34 mW of 1064-nm and 25 mW of 532-nm radiation incident upon the LBO crystal, as much as 60 nW of third-harmonic power has been produced. We present the characteristics that optimize the production of nonlinear power in this sum-frequency generation process. In the second experiment, 15 nW of radiation at 348 nm was produced with 9 mW of 696-nm incident radiation. Both processes will play an important role in the new generation of optical synthesis techniques.
© 2000 Optical Society of America
(140.3580) Lasers and laser optics : Lasers, solid-state
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.7220) Nonlinear optics : Upconversion
John J. McFerran and Andre N. Luiten, "Efficient Continuous-Wave Ultraviolet Generation in LiB3O5 and RbD2AsO4," Appl. Opt. 39, 3115-3119 (2000)