Solid-state laser device comprising a temperature-controlled thermal conductive support

Abstract

In a solid-state laser device which emits an output laser beam by pumping a solid-state laser medium in a laser resonator by an excitation laser beam generated from a semiconductor laser unit, both the solid-state laser medium and the laser resonator are mounted on a common thermal conductive support which is thermally controlled by a temperature controller through a Peltier effect element to keep a temperature of the thermal conductive support substantially constant. A thermistor is attached to the thermal conductive support to detect the temperature of the support and to supply the temperature controller with a temperature detection signal representative of the temperature of the support. The temperature controller carries out proportional-plus-integral-plus-derivative control to supply a control signal to the Peltier effect element.

Dependencies are inferred from the claim text.