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Abstract

Radiating mirror lasers in which a semiconductor active element containing an appropriately fabricated heterostructure configuration is formed as one end mirror of a two-mirror resonant cavity. The active element is fabricated from an alloy semiconductor compound such a lead salt alloy, the bandgap of which may be varied by varying the relative composition of its constituents. By properly selecting the compound and its composition, lasers may be made for operation at wavelengths that span the ultraviolet, visible and infrared portions of the spectrum. The lasers combine the inherently high power characteristics of a radiating mirror structure with a wide spectral coverage. Arrangements are disclosed for increasing power efficiencies, for tuning the operating wavelength over a wide range and for otherwise improving the utility of the lasers.

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First Claim