Accession Number : ADP008636

Title :   Passive Optical Array Generators,

Corporate Author : HERIOT-WATT UNIV EDINBURGH (SCOTLAND) DEPT OF PHYSICS

Personal Author(s) : Taghizadeh, Mohammad R. ; Turunen, Jari ; Robertson, Brian

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : Recent progress in designing and manufacturing space-invariant optical array generators is described. We begin by demonstrating Dammann gratings that generate even-numbered arrays as large as 128x128, and odd-numbered arrays of up to 201x201 spots. The concept of a hybrid hologram is applied to the fabrication of array generators, and extremely high-efficiency (close to 90%) components are obtained. Several novel types of array generators with multiple phase levels are introduced. These can e.g. reconstruct arrays with different fan-out at different angles of incidence. The application of rigorous diffraction theory to design highly efficient and compact array generators is also discussed.

Descriptors :   *OPTICAL PROPERTIES, *GRATINGS(SPECTRA), DIFFRACTION, HOLOGRAMS, ARRAYS, OPTICAL IMAGES.

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE