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Applied Optics

Applied Optics


  • Vol. 38, Iss. 1 — Jan. 1, 1999
  • pp: 67–76

High-accuracy translation–rotation encoder with two gratings in a Littrow mount

Michel Nevière, Evgeny Popov, Bozhan Bojhkov, Lyubomir Tsonev, and Svetlun Tonchev  »View Author Affiliations

Applied Optics, Vol. 38, Issue 1, pp. 67-76 (1999)

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A new type of translation–rotation encoder that makes use of two identical transparent dielectric gratings lighted in a -1-order Littrow mount is proposed. The correct choice of the wavelength-to-groove-spacing ratio produces only two transmitted beams, which interfere with the highest possible visibility in a large range of experimental conditions. Thus this mounting permits high-accuracy encoders to be produced by the use of cheap photoresist or plastic gratings and opens the way to industrial applications in high-precision mechanics, information processing, etc.

© 1999 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(090.2890) Holography : Holographic optical elements
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(230.0230) Optical devices : Optical devices

Original Manuscript: July 6, 1998
Revised Manuscript: September 21, 1998
Published: January 1, 1999

Michel Nevière, Evgeny Popov, Bozhan Bojhkov, Lyubomir Tsonev, and Svetlun Tonchev, "High-accuracy translation–rotation encoder with two gratings in a Littrow mount," Appl. Opt. 38, 67-76 (1999)

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