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US 7,248,608 B2Granted
Monoblock laser
AssigneeThe United States of America as represented by the Department of the Army
InventorJohn E. Nettleton
Life of this patent
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Abstract
An improved monoblock laser cavity is made by elongating the Optical parametric oscillation (OPO) cavity. This can be accomplished by changing the coatings on the OPO material and Q-switch and by elongating the OPO cavity to approximately 2 to 3 times the OPO crystal length. The increase in the length of the OPO cavity will improve the beam divergence of the laser.
Claims6
An improved monoblock laser cavity comprising:
- a laser source material;
- a Q-switch;
- and
- an OPO crystal;
- wherein the positioning of the Q-switch and the OPO crystal establish an OPO cavity and are manipulated to decrease a beam divergence of a laser pulse and
- wherein the Q-switch has antireflective coatings on an input and output end of the Q-switch and a highly reflective coating is applied before the antireflective coating on the output end of the Q-switch and the OPO crystal is coated on an input end with two antireflective coatings.
3 more elements
A method of making an improved momoblock laser cavity comprising the steps of:
- providing a laser source material;
- providing a Q-switch;
- and
- providing an OPO crystal;
- and
- positioning of the Q-switch and the OPO crystal so as to establish an OPO cavity;
- and
- manipulating the length of the OPO cavity to decrease a beam divergence of a laser pulse and
- wherein the Q-switch has antireflective coatings on an output end of the Q-switch and a highly reflective coating is applied before the antireflective coating on the output end of the Q-switch and the OPO crystal is coated on an input end with two antireflective coatings.
6 more elements
Dependencies are inferred from the claim text.