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Optical Engineering

Self-calibrating hybrid wavelength, polarization, and time-multiplexed heterodyne interferometers for Angstrom precision measurements
Author(s): Nabeel Agha Riza; Muzamil A. Arain; Farzan N. Ghauri
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Paper Abstract

Propose here unique wavelength and hybrid wavelength-polarization and wavelength-polarization-time-multiplexed heterodyne optical interferometers using an internal self-referencing scheme enabling Angstrom level sensitivity optical path-length measurements. As a first step, a proof-of-concept wavelength multiplexed scanning heterodyne interferometer is built to test the surface quality of a test mirror, demonstrating ±100 Å profile variations with a 0.9 Å accuracy. The hybrid wavelength-polarization and wavelength-polarization-time-multiplexed interferometers can be used to form spectrally coded distributed sensors.

Paper Details

Date Published: 1 December 2006
PDF: 6 pages
Opt. Eng. 45(12) 125603 doi: 10.1117/1.2404680
Published in: Optical Engineering Volume 45, Issue 12
Show Author Affiliations
Nabeel Agha Riza, College of Optics & Photonics/Univ. of Central Florida (United States)
Muzamil A. Arain, College of Optics & Photonics/Univ. of Central Florida (United States)
Farzan N. Ghauri, College of Optics & Photonics/Univ. of Central Florida (United States)


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