Diamond optical plate beamsplitter
AssigneeGeneral Electric Company
InventorPeter Joseph Codella
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Abstract
A structurally robust beamsplitter that has substantially constant transmittance values over a wide range of wavelengths includes a freestanding monolithic synthetic polycrystalline diamond optical plate that has a thickness in the range of about 1 .mu.m to about 1 mm. The optical plate further typically has a transmittance in the range between 55% and 75% for incident radiation over almost all wavelengths of radiation from the infrared to the visible. A beamsplitter in accordance with the present invention is readily adapted for use in a interferometric spectroscopy system, such as a system using infrared and far infrared radiation for spectroscopic analysis.
Claims6
A beamsplitter for transmitting a first portion of a beam of incident radiation along a first path and reflecting a second portion of said beam of incident radiation along a second path, said beamsplitter comprising a robust free-standing monolithic synthetic polycrystalline diamond optical plate;
- said optical plate having a thickness in the range between about 1 .mu.m and about 1 mm and further having a transmittance in the range between about 55% and about 75% for incident radiation having a wavenumber in the range between about 100 and about 2100.
Dependencies are inferred from the claim text.