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Proceedings Paper

Lithium niobate electrically controlled super-Gaussian mirrors
Author(s): Antonello Cutolo; Luigi Zeni
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Paper Abstract

Lithium Niobate is a material almost transparent in the visible and in the near IR range with a fairly high thermo-optical coefficient (5.3 X 10-5 degree(s)C-1). Relaying on the above properties, we have designed dielectric multistrate mirrors with supergaussian reflectivity profile whose parameters can be easily varied through the control of the border temperature. In fact, if one of the dielectric layers (active layer) is made up by a thermo-optical material, keeping the border temperature of the mirror above the environmental one, a temperature gradient is created along the radius. This gradient induces a refractive index modulation in the active layer which, in turn, give rise to a tapering of the reflection coefficient. This tapering fits very well a supergaussian profile.

Paper Details

Date Published: 2 May 1994
PDF: 8 pages
Proc. SPIE 2150, Design, Simulation, and Fabrication of Optoelectronic Devices and Circuits, (2 May 1994); doi: 10.1117/12.174989
Show Author Affiliations
Antonello Cutolo, Univ. degli Studi di Napoli Federico II (Italy)
Luigi Zeni, Univ. degli Studi di Napoli Federico II (Italy)


Published in SPIE Proceedings Vol. 2150:
Design, Simulation, and Fabrication of Optoelectronic Devices and Circuits
Mario Nicola Armenise, Editor(s)

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