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Optics Letters

Optics Letters


  • Vol. 27, Iss. 5 — Mar. 1, 2002
  • pp: 366–368

Coherent micromirror arrays

Kebin Li, Uma Krishnamoorthy, Jonathan P. Heritage, and Olav Solgaard  »View Author Affiliations

Optics Letters, Vol. 27, Issue 5, pp. 366-368 (2002)

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A one-dimensional, spatial light phase modulator consists of a coherent array of programmable micromirrors. Each micromirror has rotation as well as elevation control to permit high-fidelity, piecewise linear approximations to a desired spatial phase profile. We demonstrate programmable, coherent spatial modulation by configuring a four-micromirror array to act as a blazed diffraction grating, showing five diffraction orders. In sharp contrast, adjustment of each mirror elevation converts the grating into the equivalent of a single, large tilted mirror that reflects only in a new specular direction. Higher-order diffraction is effectively suppressed.

© 2002 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(070.6110) Fourier optics and signal processing : Spatial filtering
(230.6120) Optical devices : Spatial light modulators
(320.5540) Ultrafast optics : Pulse shaping
(350.3950) Other areas of optics : Micro-optics

Kebin Li, Uma Krishnamoorthy, Jonathan P. Heritage, and Olav Solgaard, "Coherent micromirror arrays," Opt. Lett. 27, 366-368 (2002)

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