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The second–order moment statistics of a twisted electromagnetic Gaussian Schell-model propagating in a uniaxial crystal
- Source :
- Optik. 162:19-26
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Under the help of extended Huygens–Fresnel integral, we acquire the analytic expressions of second-order moments of the Wigner distribution function (WDF) for a twisted electromagnetic Gaussian Schell-model (TEGSM) beam propagating in a uniaxial crystal. Moreover, we obtain the formulae for propagation factor, the effective radius of curvature and Rayleigh range in which we studied the properties of the TEGSM beam numerically. It is found that the initial beam parameters and the uniaxial crystal parameters play a decisive role in the TEGSM beam propagating in a uniaxial crystal. The TEGSM beam with smaller absolute deviation of coherence width δxx and δyy is less affected by anisotropic diffraction in a uniaxial crystal, which is much different from the evolution properties of an EGSM beam in a uniaxial crystal. The Rayleigh range will decreases while the crystal parameter e increases. Thus, the propagation properties of a TEGSM beam could be controlled in a uniaxial crystal by changing the initial beam parameters and the uniaxial crystal parameters where it is necessary.
- Subjects :
- Physics
Diffraction
Condensed matter physics
Uniaxial crystal
Gaussian
Physics::Optics
02 engineering and technology
021001 nanoscience & nanotechnology
Curvature
01 natural sciences
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
010309 optics
symbols.namesake
0103 physical sciences
Rayleigh length
symbols
Physics::Accelerator Physics
Wigner distribution function
Electrical and Electronic Engineering
0210 nano-technology
Anisotropy
Coherence (physics)
Subjects
Details
- ISSN :
- 00304026
- Volume :
- 162
- Database :
- OpenAIRE
- Journal :
- Optik
- Accession number :
- edsair.doi...........4abd21a7d75668378a3923e280c2c5fb