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Proceedings Paper

On quasi-phase-conjugated arrays
Author(s): G. Kloos
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Paper Abstract

Optical phase conjugation designates the "reflection" of a ray of light back into the direction from where it came. This physical effect can be realized by sophisticated non-linear optical devices. Examples are phase conjugating mirrors based on stimulated Brillouin scattering. Phase-conjugated mirrors are advantageous in instrument design, because they can make an optical instrument less sensitive to misalignments or a laser resonator less sensitive to optical aberrations caused by a phase distorting medium. As quasi-phase-conjugated devices we might designate devices that show this special feature in an approximated way. They can be realized with less technical and scientific effort and still offer an improvement in system stability and instrument insensitivity. An established way to make quasi-phase-conjugated devices is by implementing arrays that are made up of tiny retro-reflectors. These retro-reflectors may be realized using micro-lenses or tiny corner cube reflectors. Quasi-phase-conjugated arrays have applications in optical sensors and instruments as well as in illumination technology. Such retrodirective arrays are analyzed from the point of view of the sensitivity of their retro-reflective properties. Emphasis is put on considerations of geometrical device tailoring, namely on the question how the geometry of a unit cell that is repeated in the array arrangement influences the retro-reflection properties of the optical arrangement. A parameter study is provided that is targeting at robust retrodirective arrangements.

Paper Details

Date Published: 25 April 2008
PDF: 12 pages
Proc. SPIE 6995, Optical Micro- and Nanometrology in Microsystems Technology II, 69950U (25 April 2008); doi: 10.1117/12.781360
Show Author Affiliations
G. Kloos, Meilute (Germany)


Published in SPIE Proceedings Vol. 6995:
Optical Micro- and Nanometrology in Microsystems Technology II
Christophe Gorecki; Anand Krishna Asundi; Wolfgang Osten, Editor(s)

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