Laser apparatus

Details Laser apparatus Laser apparatus

H - Electricity

01

S

345/46, 253/86

H01S 3/08 (2006.01) H01S 3/081 (2006.01) H01S 3/098 (2006.01)

Patent

CA 1151757

A B S T R A C T Laser apparatus operable in the range 8 to 50 microns, has an optical cavity defined by two mirrors and, one of which is partially transmitting. The cavity contains a laser active medium and a reflecting polariser. The reflect- ing polariser comprises a substrate carrying a metallic reflecting coating covered by a dielectric layer of alumina, silicon dioxide or magnesium oxide. The wavelength of operation determines the dielectric material to be used, and the thickness of the layer determines the absorption loss introduced into one of two perpendicular planes of polarisation.

352808

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