Optical Phase Singularities in Detection of Laser Beam Collimation
Applied Optics, Vol. 42, Issue 31, pp. 6314-6320 (2003)
http://dx.doi.org/10.1364/AO.42.006314
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Abstract
Optical phase singularities, also called optical vortices, are known to have applications in various branches of optics. Here the role played by optical vortices in collimation testing is explained. Interference and a diffractive experimental setup in which the presence of an optical vortex permits collimation testing are presented. It is shown that the moire fringes that aid in collimation detection are due solely to the presence of vortices and not to the accompanying phase factors that are involved in producing a grating structure.
© 2003 Optical Society of America
OCIS Codes
(120.1680) Instrumentation, measurement, and metrology : Collimation
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques
Citation
Paramasivam Senthilkumaran, "Optical Phase Singularities in Detection of Laser Beam Collimation," Appl. Opt. 42, 6314-6320 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-31-6314
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