Phase-space imaging of partially coherent beam propagation using a Spatial Light Modulator

2011 ◽  
Author(s):  
Laura Waller ◽  
Guohai Situ ◽  
Jason W. Fleischer
Keyword(s):  
Phase Space ◽  
Spatial Light Modulator ◽  
Beam Propagation ◽  
Coherent Beam ◽  
Light Modulator ◽  
Partially Coherent

scholarly journals Synthesizing General Electromagnetic Partially Coherent Sources from Random, Correlated Complex Screens

Optics ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 97-113
Author(s):  
Milo W. Hyde IV
Keyword(s):  
Spatial Light Modulator ◽  
Transfer Functions ◽  
Monte Carlo Analysis ◽  
Random Numbers ◽  
Light Modulator ◽  
Partially Coherent ◽  
Spectral Density Matrix ◽  
Cross Spectral Density ◽  
Stochastic Vector ◽  
Space Variant

We present a method to generate any genuine electromagnetic partially coherent source (PCS) from correlated, stochastic complex screens. The method described here can be directly implemented on existing spatial-light-modulator-based vector beam generators and can be used in any application which utilizes electromagnetic PCSs. Our method is based on the genuine cross-spectral density matrix criterion. Applying that criterion, we show that stochastic vector field realizations (corresponding to a desired electromagnetic PCS) can be generated by passing correlated Gaussian random numbers through “filters” with space-variant transfer functions. We include step-by-step instructions on how to generate the electromagnetic PCS field realizations. As an example, we simulate the synthesis of a new electromagnetic PCS. Using Monte Carlo analysis, we compute statistical moments from independent optical field realizations and compare those to the corresponding theory. We find that our method produces the desired source—the correct shape, polarization, and coherence properties—within 600 field realizations.

scholarly journals Experimental synthesis of partially coherent beam with controllable twist phase and measuring its orbital angular momentum

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Haiyun Wang ◽  
Xiaofeng Peng ◽  
Hao Zhang ◽  
Lin Liu ◽  
Yahong Chen ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Super Resolution ◽  
Coherent Beam ◽  
Light Modulator ◽  
Flexible Control ◽  
Precise Control ◽  
Partially Coherent ◽  
Twist Factor ◽  
Key Factor

Abstract Twist phase is a nontrivial second-order phase that only exists in a partially coherent beam. Such twist phase endows the partially coherent beam with orbital angular momentum (OAM) and has unique applications such as in super-resolution imaging. However, the manipulation and the detection of the twist phase are still far from easy tasks in experiment. In this work, we present a flexible approach to generate a famous class of twisted Gaussian Schell-model (TGSM) beam with controllable twist phase by the superposition of the complex field realizations using a single phase-only spatial light modulator. The precise control of the amplitude and phase of the field realizations allows one to manipulate the strength of the twist phase easily. In addition, we show that the twist factor, a key factor that determines the strength of twist phase and the amount of OAM, can be measured by extracting the real part of the complex degree of coherence of the TGSM beam. The experiment is carried out with the help of the generalized Hanbury Brown and Twiss experiment as the generated TGSM beam obeys Gaussian statistics. The flexible control and detection of the twist phase are expected to find applications in coherence and OAM-based ghost imaging.

Generation of a partially coherent secondary source with Bessel-mode vortex structure by liquid crystal spatial light modulator

2019 ◽  
Vol 439 ◽  
pp. 312-316 ◽  
Author(s):  
M.A. Olvera Santamaría ◽  
J.L. Rodríguez Garciapiña ◽  
J. García García ◽  
A.S. Ostrovsky
Keyword(s):  
Liquid Crystal ◽  
Vortex Structure ◽  
Spatial Light Modulator ◽  
Secondary Source ◽  
Light Modulator ◽  
Partially Coherent

scholarly journals Free-Motion Beam Propagation Factor Measurement by Means of a Liquid Crystal Spatial Light Modulator

2012 ◽  
Vol 8 (9) ◽  
pp. 539-545 ◽  
Author(s):  
Jorge Perez-Vizcaino ◽  
Omel Mendoza-Yero ◽  
Raúl Martinez-Cuenca ◽  
Lluís Martinez-Leon ◽  
Enrique Tajahuerce ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Spatial Light Modulator ◽  
Beam Propagation ◽  
Free Motion ◽  
Light Modulator ◽  
Propagation Factor ◽  
Factor Measurement ◽  
Beam Propagation Factor
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