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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 19 — Jul. 1, 2010
  • pp: 3774–3779

Ten-element photodetector for optical power and attenuation measurements

Toomas Kübarsepp and Malcolm White  »View Author Affiliations


Applied Optics, Vol. 49, Issue 19, pp. 3774-3779 (2010)
http://dx.doi.org/10.1364/AO.49.003774


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Abstract

The properties of what is, to the best of our knowledge, the first ten-element polarization-dependent transmission trap detector consisting of silicon photodiodes are described. The responsivity and the transmittance of the photodetector were measured at laser wavelengths of 476.2 and 647.1 nm . In particular, the effect of the polarization state of the incident radiation on the transmittance was determined. Differences in transmittance of an order of magnitude were observed between s and p polarization. These values were compared with theoretical values calculated using the Fresnel reflection formulas. The difference between the calculated and measured values was less than ± 3 × 10 7 . The spatial nonuniformity of the response was measured to be less than ± 3 × 10 4 . The transmittance was measured to be spatially uniform across a 5 mm × 5 mm area of the trap detector aperture to within ± 1.5 × 10 6 for s-polarized input and within ± 1.5 × 10 7 for p-polarized input.

© 2010 Optical Society of America

OCIS Codes
(040.5160) Detectors : Photodetectors
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: February 16, 2010
Revised Manuscript: May 20, 2010
Manuscript Accepted: May 28, 2010
Published: June 28, 2010

Citation
Toomas Kübarsepp and Malcolm White, "Ten-element photodetector for optical power and attenuation measurements," Appl. Opt. 49, 3774-3779 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-19-3774

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