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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 24 — Aug. 20, 1998
  • pp: 5731–5736

Infrared properties of chemical-vapor deposition polycrystalline diamond windows

Paolo Dore, Alessandro Nucara, Daniele Cannavò, Gianluca De Marzi, Paolo Calvani, Augusto Marcelli, Ricardo S. Sussmann, Andrew J. Whitehead, Carlton N. Dodge, Astrid J. Krehan, and Hans J. Peters  »View Author Affiliations


Applied Optics, Vol. 37, Issue 24, pp. 5731-5736 (1998)
http://dx.doi.org/10.1364/AO.37.005731


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Abstract

Low-resolution transmittance and reflectance spectra of high-quality chemical-vapor deposition (CVD) diamond windows were measured in the infrared in the 2.5–500-μm wavelength range (20–4000 cm-1). High-resolution measurements on a window with nearly parallel surfaces show well defined interference fringes at low frequencies. By standard procedures the optical constants n and k of CVD diamond were determined, for the first time to the author’s knowledge, in the far-infrared region. It is shown that a window with a large wedge angle, close to 1°, does not produce appreciable interference fringes. Modeling of these results confirms that interference fringes can be avoided by use of properly wedged CVD diamond windows. This result is of considerable relevance to the use of CVD diamond windows in spectroscopic applications for which fringe suppression is a major requirement.

© 1998 Optical Society of America

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(160.0160) Materials : Materials
(160.4670) Materials : Optical materials
(160.4760) Materials : Optical properties
(260.3160) Physical optics : Interference
(300.6270) Spectroscopy : Spectroscopy, far infrared

History
Original Manuscript: November 24, 1997
Revised Manuscript: April 9, 1998
Published: August 20, 1998

Citation
Paolo Dore, Alessandro Nucara, Daniele Cannavò, Gianluca De Marzi, Paolo Calvani, Augusto Marcelli, Ricardo S. Sussmann, Andrew J. Whitehead, Carlton N. Dodge, Astrid J. Krehan, and Hans J. Peters, "Infrared properties of chemical-vapor deposition polycrystalline diamond windows," Appl. Opt. 37, 5731-5736 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-24-5731

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