Electrooptic despeckler based on helix-free ferroelectric liquid crystal. (December 2017)

• Record Type: Journal Article
• Authors: Andreev, A.L.; Zalyapin, N.V.; Andreeva, T.B.; Kompanets, I.N.
• Is Part Of: Quantum electronics. Volume 47:Number 11(2017)
• Page Start: 1064
• Page End: 1068
• Publication Date: 2017-12
• Subjects: holography -- speckle noise -- despeckler -- liquid crystal -- light scattering -- phase modulation of light -- beam coherence destruction -- speckle suppression; Quantum electronics -- Periodicals; 537.5
• DOI: 10.1070/QEL16497
• Languages: English
• ISSNs: 1063-7818

Abstract

Abstract: In an experimental sample of a despeckler, consisting of an electrooptic cell with a 20-μm-thick helix-free liquid ferroelectric, to which an electric field with a strength of ~3V μm −1 and a frequency of 2 kHz is applied, we obtained spatially nonuniform phase modulation of a laser beam with a value exceeding π. The effect allows the implementation of speckle noise suppression with an efficiency of 10.7 dB.