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Gaussian beam reflection and refraction by a spherical or parabolic surface: comparison of vectorial-law calculation with lens approximation |
JOSA A, Vol. 29, Issue 10, pp. 2144-2153 (2012)
http://dx.doi.org/10.1364/JOSAA.29.002144
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Abstract
A ray-tracing approach is used to demonstrate efficient application of the vectorial laws of reflection and refraction to computational optics problems. Both the full width at half-maximum (fwhm) and offset of Gaussian beams resulting from off-center reflection and refraction are calculated for spherical and paraboloidal surfaces of revolution. It is found that the magnification and displacement depend nonlinearly on the miscentering. For these geometries, the limits of accuracy of the lens approximation are examined quantitatively. In contrast to the ray-tracing solution, this paraxial approximation would predict a magnification of a beam’s fwhm that is independent of miscentering, and an offset linearly proportional to the miscentering. The focusing property of paraboloidal surfaces of revolution is also derived in setting up the calculation.
© 2012 Optical Society of America
OCIS Codes
(080.0080) Geometric optics : Geometric optics
(080.2720) Geometric optics : Mathematical methods (general)
(080.2730) Geometric optics : Matrix methods in paraxial optics
(140.0140) Lasers and laser optics : Lasers and laser optics
(080.1753) Geometric optics : Computation methods
(080.4228) Geometric optics : Nonspherical mirror surfaces
ToC Category:
Geometric Optics
History
Original Manuscript: June 4, 2012
Manuscript Accepted: July 6, 2012
Published: September 18, 2012
Citation
Eric R. Tkaczyk, Koit Mauring, and Alan H. Tkaczyk, "Gaussian beam reflection and refraction by a spherical or parabolic surface: comparison of vectorial-law calculation with lens approximation," J. Opt. Soc. Am. A 29, 2144-2153 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-10-2144
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