| Autor: |
Sergei A. Kozlov, Sergey Vladimorovich Egorov, Danil A. Kirsanov, V. B. Karasev, Nickolai R. Belashenkov, Vitali V. Bezzubik |
| Rok vydání: |
1997 |
| Předmět: |
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| Zdroj: |
SPIE Proceedings. |
| ISSN: |
0277-786X |
| DOI: |
10.1117/12.271776 |
| Popis: |
In the present paper the laser beams with Cartesian symmetry having the minimum diffraction divergence in near and far fields are synthesized. The spatial sizes of these beams in near field as well as the angular size in far field have been defined on the share of total beam energy that could be transmitted within this size. It is shown that the laser beams with minimum near-field diffraction divergence are well approximated by coherent superposition of a few number of lowest symmetric Hermite-Gaussian modes. The transverse distributions of light waves with minimum far-field divergence are described by prolate spheroidal functions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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