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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 19 — Oct. 1, 2009
  • pp: 3044–3046

Active control of grating interferometers for extended-range low-noise operation

Omkar Karhade, Levent Degertekin, and Thomas Kurfess  »View Author Affiliations

Optics Letters, Vol. 34, Issue 19, pp. 3044-3046 (2009)

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An active control method is proposed and demonstrated to improve grating-based laser interferometry to achieve low-noise (subpicometer resolution) and multiwavelength unambiguous range of operation simultaneously. The method modifies a recurrent calibration-based path stabilization algorithm to extract high-resolution and low-resolution data in parallel. This extended range recurrent calibration method is experimentally verified by implementing it on the micromachined scanning grating interferometer ( μ SGI ).

© 2009 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(230.3990) Optical devices : Micro-optical devices

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: May 8, 2009
Revised Manuscript: August 20, 2009
Manuscript Accepted: August 20, 2009
Published: September 30, 2009

Omkar Karhade, Levent Degertekin, and Thomas Kurfess, "Active control of grating interferometers for extended-range low-noise operation," Opt. Lett. 34, 3044-3046 (2009)

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