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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 28 — Oct. 1, 1998
  • pp: 6671–6676

Experimental method for high-accuracy reflectivity-spectrum measurements

Claude-Albert Berseth, Arthur Schönberg, Oliver Dehaese, Klaus Leifer, Alok Rudra, and Eli Kapon  »View Author Affiliations


Applied Optics, Vol. 37, Issue 28, pp. 6671-6676 (1998)
http://dx.doi.org/10.1364/AO.37.006671


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Abstract

An experimental method for accurate measurements of the reflectivity spectrum of mirrors is presented. It combines the noise reduction obtained with multiple beam reflections on two identical mirrors; high-beam quality, owing to the use of single-mode optical fibers; and high immunity against intensity variations of the beam. This method is demonstrated for characterizing a 30-period GaAs/Al0.65Ga0.35As distributed Bragg reflector designed for long-wavelength vertical-cavity surface-emitting lasers. Its peak reflectivity is found to be 99.43 ± 0.04% at 1.562 μm, and an optical absorption coefficient of α = 36 ± 6 cm-1 is derived. The peak internal reflectivity of this distributed Bragg reflector used as the top mirror in a wafer-fused vertical-cavity surface-emitting laser is calculated to be 98.87 ± 0.12%, and the transmission is 0.28%.

© 1998 Optical Society of America

OCIS Codes
(120.5700) Instrumentation, measurement, and metrology : Reflection
(220.4840) Optical design and fabrication : Testing
(230.4040) Optical devices : Mirrors
(230.4170) Optical devices : Multilayers
(250.7260) Optoelectronics : Vertical cavity surface emitting lasers

History
Original Manuscript: February 19, 1998
Revised Manuscript: July 13, 1998
Published: October 1, 1998

Citation
Claude-Albert Berseth, Arthur Schönberg, Oliver Dehaese, Klaus Leifer, Alok Rudra, and Eli Kapon, "Experimental method for high-accuracy reflectivity-spectrum measurements," Appl. Opt. 37, 6671-6676 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-28-6671

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