US 2010/0142565 A1 · LASER LIGHT SOURCE

Abstract

The present invention relates to a laser light source having a structure that has high durability to support high power output. The laser light source is an optical device that pulse-oscillates laser light and has a resonator, a rare earth element doped fiber, pumping means, Q switch means, and a condensing lens. The resonator forms a resonance optical path. A fiber is inserted on the resonance optical path and outputs radiation light by supply of pumping energy. The pumping means continuously supplies pumping energy to the fiber. The Q switch means modulates resonator loss of the resonator. The condensing lens condenses the radiation light whose spot size has been expanded and which propagates from the fiber to the Q switch means. The Q switch means is disposed such that a portion contributing to at least a resonator loss modulation is located at the condensing point of radiation light which is condensed by the condensing lens, and mechanically changes formation and interruption of the resonance optical path by transmitting or interrupting the radiation light in the contributing portion.

Claims8

Dependent claims

A laser light source pulse-oscillating laser light, comprising:

a resonator forming a resonation optical path;
a rare earth element doped fiber inserted on the resonance optical path, the rare earth element doped fiber outputting radiation light by supply of pumping energy;
pumping means for continuously supplying pumping energy to the rare earth element doped fiber;
Q switch means for modulating resonator loss of the resonator;
and
a condensing lens provided on the resonance optical path between an end face of the rare earth element doped fiber and the Q switch means, the condensing lens condensing the radiation light whose spot size has been expanded and which propagates from the rare earth element doped fiber to the Q switch means,
wherein the Q switch means is disposed such that a portion that contributes to at least a resonator loss modulation is located at the condensing point of the condensing lens and mechanically change formation and interruption of the resource optical path.

4 more elements

A laser light source for pulse-oscillating laser light, comprising:

a resonator forming a resonation optical path between a reflection face and an emission face;
a rare earth element doped fiber inserted on the resonance optical path, the rare earth element doped fiber outputting radiation light by supply of pumping energy;
pumping means for continuously supplying pumping energy to the rare earth element doped fiber;
and
Q switch means for modulating resonator loss of the resonator,
wherein the Q switch means has a structure for adjusting the position of the reflection face, and mechanically changes formation and interruption of the resonance optical path by adjusting the position of the reflection face.

3 more elements

Dependencies are inferred from the claim text.

Laser light source

Life of this patent

Laser light source

Life of this patent

Abstract

Claims8