US 2012/0057219 A1 · LASER LIGHT SOURCE APPARATUS

Abstract

In a laser light source apparatus using a wavelength converting device (35), the position and angle of the wavelength converting device are allowed to be varied so as to maximize the laser output. The angular adjustment of the wavelength converting device is simplified by accurately positioning the wavelength converting device. A holder (57) for retaining the wavelength converting device may be supported by a support portion (56) formed in a base (38) so as to be moveable in the depthwise direction of the poled inverted domain regions and tiltable with respect to the optical path. Preferably, the holder may be rotatable around an axial line substantially perpendicular to the optical axial line. In particular, the wavelength converting device may be fixedly attached to the holder so as to bring an exit surface (35b) of the wavelength converting device in close contact with a mounting reference surface (841) by using a bonding agent applied to a top surface (35e) and a bottom surface (35f) of the wavelength converting device adjacent to the exit surface, and a bottom surface (207) of a recess (891) formed in the holder adjacent to and in parallel with the mounting reference surface.

Claims15

Dependent claims

A laser light source apparatus for generating a half wavelength laser beam from a base wavelength laser beam, comprising:

a laser device for emitting a base wavelength laser beam;
an optical system for causing a resonation of the base wavelength laser beam;
a wavelength converting device including a plurality of periodically formed poled inverted domain regions, each poled inverted domain region being wedge shaped and progressively narrower in a depthwise direction thereof for converting at least part of the base wavelength laser beam into a half wavelength laser beam;
a holder for retaining the wavelength converting device on an optical path of the base wavelength laser beam in the optical system;
and
a base provided with a support portion for supporting the holder;
the holder being supported by the support portion so as to be moveable in the depthwise direction of the poled inverted domain regions and tiltable with respect to the optical path.

4 more elements

A laser light source apparatus for generating a half wavelength laser beam from a base wavelength laser beam, comprising:

a laser device for emitting a base wavelength laser beam;
an optical system for causing a resonation of the base wavelength laser beam;
a wavelength converting device for converting at least part of the base wavelength laser beam amplified by the resonation into a half wavelength laser beam;
a holder for retaining an optical element included in the wavelength converting device;
and
a base provided with a support portion for supporting the holder;
wherein the optical element includes an incident surface and an exit surface, and the holder is provided with a mounting reference surface with which one of the incident surface and exit surface is brought into contact for positioning the optical element, and
wherein the optical element is fixedly attached to the holder by using a bonding agent applied to both a surface of the optical element adjacent to the one of the incident surface and exit surface and a surface of the holder adjacent to an parallel to the mounting reference surface.

5 more elements

Dependencies are inferred from the claim text.

Laser light source apparatus

Life of this patent

Laser light source apparatus

Life of this patent

Abstract

Claims15