Speckle-free imaging in four-wave mixing experiments with Bi_12SiO_20 crystals
- 1 October 1980
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 5 (10) , 436-437
- https://doi.org/10.1364/ol.5.000436
Abstract
We demonstrate that holographic speckle-free imaging is possible when a dynamic recording medium, such as a Bi12SiO20 crystal, and a four-wave mixing configuration are used. The method is based on time integration in the conjugate-image plane of N coherent images having an independent speckle pattern. We apply this concept to a real-time optical processing operation. A speckle-free time-averaged interferogram of a vibrating structure is obtained.Keywords
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