We report efficient (22%/W) blue-light generation by direct diode-laser frequency doubling in second-order quasi-phase-matched LiNbO3 channel waveguides. We address several critical issues of direct diode-laser doubling, which include input coupling, phase-matching bandwidth, and, in particular, the effect of the spectral mode structure of a high-power diode laser on the frequency-conversion efficiency.
© 1992 Optical Society of America
Original Manuscript: February 3, 1992
Published: June 1, 1992
Xiaofan Cao, Beth Rose, Ramu V. Ramaswamy, and Ramakant Srivastava, "Efficient direct diode-laser frequency doubling in quasi-phase-matched LiNbO3 waveguides," Opt. Lett. 17, 795-797 (1992)