OPTICAL WAVELENGTH CONVERSION ELEMENT AND SHORT WAVELENGTH LASER BEAM SOURCE FORMED BY USING THE SAME

摘要

PURPOSE: To stabilize the higher harmonic waves emitted from the optical wavelength conversion element for which a nonlinear optical effect is used and is concerned with the element and to efficiently modulate the optical wavelength conversion element with a low voltage. ;CONSTITUTION: Electrodes 15 are formed by depositing Al by evaporation on an optical waveguide 2 of the optical wavelength conversion element formed of polarity inversion layers 3 and the optical waveguide 2 on an LiTaO₃ substrate 1. The refractive index of the optical wavelength conversion element is controlled by impressing a voltage to these electrodes 15. As a result, a stable operation is executed by changing the impressed voltage on the optical wavelength conversion element even if the wavelength of a semiconductor changes with a change in environmental temp. The modulation of a higher harmonic wave p2 output by modulating the voltage is possible as well.;COPYRIGHT: (C)1994,JPO&Japio