Diamond optical plate beamsplitter

Details Diamond optical plate beamsplitter Diamond optical plate beamsplitter

1995-10-03

1998-01-06

Nelms, David C.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

G02B 2714

Patent

active

057061351

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.

REFERENCES:
patent: 4948629 (1990-08-01), Hacker
patent: 5225926 (1993-07-01), Cuomo et al.
patent: 5273731 (1993-12-01), Anthony
patent: 5536943 (1996-07-01), Smith et al.
patent: 5552675 (1996-09-01), Lemelson
Brad Williams, "Diamond Optics: May Be an Engineer's Best Friend," Photonics Spectra, Nov. 1995, pp. 99-102.
Mark P. D'Evelyn et al., Article entitled, "Properties of CVD Diamond for Optical Applications," appearing in Applications of Diamond Films and Related Materials: Third International Conference, edited by A. Feldman et al., (NIST Special Publication 885, Washington, DC, 1995) pp. 547-550.

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