Semiconductor laser excited solid state laser device and laser light output method

摘要

A semiconductor laser excited solid state laser device and method. The device including a semiconductor laser; a driving device; a solid state laser module which has maximum output efficiency at the set temperature and which generates, from excitation light, an output light of a predetermined output level when the optical noise is at or below a fixed level and the output level of the excitation light is the set output level; a single temperature adjustment device which adjusts the temperature of the semiconductor laser and the temperature of the solid state laser module; and a control device which controls the driving device such that the output light will be at the predetermined output level and controls the temperature adjustment device such that the temperature of the semiconductor laser and the solid state laser module will be the set temperature.

主权项

1. A semiconductor laser excited solid state laser device, comprising:
a semiconductor laser which outputs a single transverse mode excitation light of fixed wavelength at a set output level, without undergoing mode hopping, at a set temperature; a driving device which drives said semiconductor laser; a solid state laser module which has maximum output efficiency at said set temperature and which generates, from said excitation light, an output light of a predetermined output level when an optical noise is at or below a fixed level and the output level of said excitation light is said set output level; a single temperature adjustment device which adjusts the temperature of said semiconductor laser and the temperature of said solid state laser module; and a control device which controls said driving device such that said output light will be at said predetermined output level without undergoing mode hopping based on wavelength shift characteristics of said semiconductor laser dependent on output level, and controls said temperature adjustment device such that the temperature of said semiconductor laser and said solid state laser module will be said set temperature without undergoing mode hopping based on wavelength shift characteristics of said semiconductor laser dependent on temperature.