US 5,636,239 A · Solid state optically pumped laser head

Abstract

A laser pump cavity assembly having a laser rod with a ground outer surface positioned concentrically within an annular jet sleeve which is, in turn, positioned concentrically within an annular outer sleeve. The outer sleeve is coated with a dielectric coating having slits therein arranged to receive focused optical pump radiation from respective laser diode arrays, the pump radiation being transmitted through the outer sleeve and jet sleeve to excite the laser rod. The jet sleeve is positioned to define cooling fluid chambers between the outer sleeve and the jet sleeve, and between the jet sleeve and the laser rod, and is provided with a series of jet holes for directing cooling fluid to impinge perpendicularly on the laser rod. The end faces of the jet sleeve and outer sleeve are further coated with dielectric material to enhance the efficiency of the device. The cooperating end caps which mount the outer sleeve, jet sleeve, and laser rod employ a number of advantageous self-aligning and sealing features.

Claims28

Dependent claims

A laser apparatus comprising:

a first sleeve having a cylindrical outer surface and a central cavity therein, said cavity being shaped to receive a laser medium, said cavity including a light transmissive jet Sleeve for directing cooling fluid to impinge on said laser medium;
means for mounting said first sleeve and said jet sleeve means and for conducting cooling fluid to Said jet sleeve means;
and
a plurality of light transmissive aperture means, each aperture means located on the circumference of said first sleeve for receiving pump light and transmitting said pump light to said central cavity.

1 more element

Dependencies are inferred from the claim text.

Solid state optically pumped laser head

Life of this patent

Solid state optically pumped laser head

Life of this patent

Abstract

Claims28