Abstract
As a compact solid-state source for blue light, laser diode-based second-harmonic generation (SHG) devices hold much promise for use in optical storage and laser printer devices. SHG by quasi-phase matching (QPM) offers the advantages of shorter wavelength accessibility and high conversion efficiency.1 For a higher output QPM-SHG, LiTaO1 has been found to be an excellent material2 because of high resistance to photoretractive damage and large nonlinear coefficient.
© 1992 Optical Society of America
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