title: Coherent micromirror arrays.
abstract: 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.
authors.forename: Kebin
authors.initials: K
authors.lastname: Li
authors.forename: Uma
authors.initials: U
authors.lastname: Krishnamoorthy
authors.forename: Jonathan P
authors.initials: JP
authors.lastname: Heritage
authors.forename: Olav
authors.initials: O
authors.lastname: Solgaard