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Proceedings Paper

Axial diffraction patterns in the vicinity of the focus of the off-axis holographic diffractive collimator
Author(s): Milan Hradil; Miroslav Miler; Jan Pala
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Paper Abstract

Off-axis holographic optical elements can be used for collimation of optical beams from edge emitting diode lasers. Such a single element collimator can simultaneously compensate large elliptic cross-section and considerable astigmatism of that beams and also reduce two selected lower aberrations. Beside a current transverse diffraction pattern in the focus also patterns in the vicinity of the focus should take attention. Diffraction patterns due to an elliptic aperture of such a collimator are very complicated and for their theoretical description sophisticated methods must be used. This contribution involves some preliminary results of the study. Theoretical transverse diffraction patterns in the vicinity of the focus have been mainly presented and their description analyzed.

Paper Details

Date Published: 12 April 2007
PDF: 6 pages
Proc. SPIE 6609, 15th Czech-Polish-Slovak Conference on Wave and Quantum Aspects of Contemporary Optics, 66090D (12 April 2007); doi: 10.1117/12.739387
Show Author Affiliations
Milan Hradil, Institute of Radio Engineering and Electronics (Czech Republic)
Miroslav Miler, Institute of Radio Engineering and Electronics (Czech Republic)
Jan Pala, Institute of Radio Engineering and Electronics (Czech Republic)


Published in SPIE Proceedings Vol. 6609:
15th Czech-Polish-Slovak Conference on Wave and Quantum Aspects of Contemporary Optics

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