MODE CONTROL WAVEGUIDE-TYPE LASER DEVICE

摘要

The objective is to provide a mode control waveguide-type laser device with an increased range of control of the focal length of a generated heat lens, and with improved reliability. The laser device is equipped with: a laser medium that has a waveguide structure in the thickness direction of the cross section perpendicular to the light axis (6), and that generates gain with respect to laser light; a cladding adhered to one surface of the laser medium; and a heat sink (2) adhered to the one surface of the laser medium via the cladding. The laser medium generates a lens effect due to the refractive index distribution, and the laser light oscillates in the waveguide mode in the thickness direction, and oscillates in the spatial mode in the direction perpendicular to the light axis and the thickness direction due to the lens effect. A desired temperature distribution is generated in the laser medium and the refractive index distribution within the laser medium is generated due to the junction area of the cladding and the heat sink (2).