Laser beam generating apparatus
AssigneeSony Corporation
InventorHisashi Masuda
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Abstract
A laser beam generating apparatus is configured such that a laser beam having a first wavelength obtained by a semiconductor laser containing gallium nitride is led in an external resonator using a nonlinear optical crystal. By allowing the laser beam to pass through the nonlinear optical crystal, an ultraviolet beam having a shorter wavelength is outputted as a laser beam. The wavelength of the ultraviolet beam becomes shorter by keeping the temperature of the nonlinear optical crystal at a low temperature. With this configuration, a laser beam in an ultraviolet region can be efficiently generated with a small apparatus.
Claims17
A laser beam generating apparatus comprising:
- a semiconductor laser for outputting a laser beam having a first wavelength, said semiconductor laser containing gallium nitride;
- and
- an external resonator using a nonlinear optical crystal;
- wherein the output beam from said semiconductor laser is led in said external resonator so as to pass through said nonlinear optical crystal, to generate an ultraviolet beam having a second wavelength shorter than the first wavelength.
Dependencies are inferred from the claim text.