Random porous silicon multilayers: application to distributed Bragg reflectors and interferential Fabry - Pérot filters
- 1 May 1997
- journal article
- Published by IOP Publishing in Semiconductor Science and Technology
- Vol. 12 (5), 570-575
- https://doi.org/10.1088/0268-1242/12/5/009
Abstract
Random porous silicon dielectric multilayers are proposed as interesting materials for applications as optical components. Distributed Bragg reflectors and interferential Fabry - Pérot filters are demonstrated. The randomness is obtained as a variation in the layer thicknesses. The advantage in the use of random instead of periodic multilayers lies in the obtention of a wider stop-band in Bragg reflectors with the same difference in the refractive indexes of the layers and in a higher finesse in Fabry - Pérot filters.Keywords
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