scholarly journals Coherent combining of 49 laser beams from a multiple core optical fiber by a spatial light modulator

2010 ◽  
Vol 18 (5) ◽  
pp. 4783 ◽  
Author(s):  
J. Lhermite ◽  
E. Suran ◽  
V. Kermene ◽  
F. Louradour ◽  
A. Desfarges-Berthelemot ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Spatial Light Modulator ◽  
Laser Beams ◽  
Light Modulator ◽  
Coherent Combining

scholarly journals Mode decomposition of multimode optical fiber beams by phase-only spatial light modulator

2020 ◽  
Vol 18 (1) ◽  
pp. 015101
Author(s):  
M D Gervaziev ◽  
I Zhdanov ◽  
D S Kharenko ◽  
V A Gonta ◽  
V M Volosi ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Spatial Light Modulator ◽  
Light Modulator ◽  
Multimode Optical Fiber ◽  
Mode Decomposition

scholarly journals An interference scheme for generating inhomogeneously polarized laser radiation using a spatial light modulator

2020 ◽  
Vol 44 (2) ◽  
pp. 214-218 ◽  
Author(s):  
S.V. Karpeev ◽  
V.V. Podlipnov ◽  
A.M. Algubili
Keyword(s):  
Laser Radiation ◽  
Phase Transformations ◽  
Optical System ◽  
Spatial Light Modulator ◽  
Laser Beams ◽  
Light Modulator ◽  
Optical Setup ◽  
Linearly Polarized ◽  
Polarization Phase ◽  
Cylindrical Vector Beam

An optical system for converting linearly polarized laser beams into cylindrical vector beams is developed and experimentally investigated. The scheme is based on the coherent addition of mode beams using a Mach-Zehnder interferometer. The simplicity and versatility of the optical setup is achieved through the use of different sections in the area of the spatial light modulator for the si-multaneous generation of two spatially separated given mode beams. Each of the beams then propagates in one of the arms of the interferometer and undergoes the necessary polarization-phase transformations to obtain a cylindrical vector beam after the addition of mode beams.

Adaptive holographic interferometer based on optically addressed spatial light modulator for high-sensitivity optical fiber sensing

2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Arnaud Peigné ◽  
Umberto Bortolozzo ◽  
Stefania Residori ◽  
Stéphanie Molin ◽  
Pascale Nouchi ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Optical Fiber ◽  
Phase Modulation ◽  
Spatial Light Modulator ◽  
High Sensitivity ◽  
Time Domain Reflectometry ◽  
Slow Phase ◽  
Light Modulator ◽  
Multimode Optical Fiber ◽  
Holographic Interferometer

AbstractAdaptive holographic interferometry is a promising method for high-sensitivity phase-modulation measurements in the presence of slow perturbations from the environment. This technique is based on the use of a nonlinear recombining medium. We report the realization of an adaptive holographic interferometer relying on an optically addressed liquid crystal spatial light modulator operating at 1.55 μm. The beam-coupling process that occurs in a GaAs-liquid crystal device, allows obtaining a phase-modulation sensitivity of 200 μrad/sqrt (Hz) at 1 kHz. The interferometer behaves as an optical high-pass filter, with a cutoff frequency of approximately 10 Hz, thus, filtering slow-phase disturbances, such as due to temperature variations or low-frequency fluctuations, and keeping the detection linear without the need of heterodyne or active stabilization. Moreover, owing to the basic principle of holography, this technique can be used with complex wave fronts such as the speckled field reflected by a highly scattering surface or the optical field at the output of a multimode optical fiber. We demonstrate both theoretically and experimentally that using a multimode optical fiber as a sensing element, rather than a single-mode fiber, allows improving the interferometer phase sensitivity. Finally, we present a phase-optical time domain reflectometry (OTDR) optical fiber sensor using the adaptive holographic interferometer.

scholarly journals GENERATION OF HALF-PEARCEY LASER BEAMS BY A SPATIAL LIGHT MODULATOR

2014 ◽  
Vol 38 (4) ◽  
pp. 658-662 ◽  
Author(s):  
V. V. Kotlyar ◽  
A. A. Ковалёв ◽  
A. P. Porfirev
Keyword(s):  
Spatial Light Modulator ◽  
Laser Beams ◽  
Light Modulator

scholarly journals Generation of flower high-order Poincaré sphere laser beams from a spatial light modulator

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
T. H. Lu ◽  
T. D. Huang ◽  
J. G. Wang ◽  
L. W. Wang ◽  
R. R. Alfano
Keyword(s):  
Spatial Light Modulator ◽  
High Order ◽  
Laser Beams ◽  
Light Modulator ◽  
Poincaré Sphere ◽  
Poincare Sphere
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