Planar waveguide laser pumping module and planar waveguide wavelength conversion laser device

摘要

A waveguide is constructed by sandwiching a transparent member (4) and a laser medium (5) between a first clad 3-1 and a second clad 3-2. Pumping light (8) is made to be incident from a direction perpendicular to a direction of the optical axes of first to fourth laser oscillation light beams 9-1 to 9-4, and to alternately propagate through the transparent member (4) and the laser medium (5) in a zigzag manner so as to pump only resonator mode regions in the laser medium (5).

主权项

1. A planar waveguide laser pumping module comprising:
a planar laser medium; a planar transparent member that has a refractive index equal to or smaller than that of said laser medium, and that is joined to a first surface of said laser medium; a first clad that has a refractive index smaller than those of said laser medium and said transparent member, and that is joined to a first surface of said transparent member opposite to a second surface of said transparent member joined to the first surface of said laser medium; a second clad that has a refractive index smaller than those of said laser medium and said transparent member, that is joined to a second surface of said laser medium opposite to the first surface of said laser medium joined to said transparent member, and that sandwiches said transparent member and said laser medium between itself and said first clad; and a heat sink that is joined to said laser medium via said second clad, wherein laser oscillations occur on a plurality of optical axes which are arranged at spacings in a planar direction of said laser medium, and pumping light is incident in a direction perpendicular to the optical axes of said laser oscillations, and alternately propagates on the plurality of optical axes of said laser medium and in said transparent member between the adjacent optical axes.