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Proceedings Paper

Collimation of Cerenkov SHG blue light for fine focusing
Author(s): Ming Wang; Osami Wada; Ryuji Koga
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Paper Abstract

Proposed here is a convenient optical system to collimate the crescent shape blue laser beam radiated from a Cerenkov SHG in channel waveguide configuration. This collimation system makes use of the reflection of a parabolic mirror and has a very large tolerance to the mirror displacement. The anisotropy of the nonlinear crystal on which the waveguide is fabricated has been taken into account. The optimum mirror location to obtain a collimated blue laser beam is given in accordance with Marechal's Criterion. By using an object lens, the collimated beam can be focused down with the spot size less than 1 micrometers .

Paper Details

Date Published: 5 August 1994
PDF: 4 pages
Proc. SPIE 2321, Second International Conference on Optoelectronic Science and Engineering '94, (5 August 1994); doi: 10.1117/12.182169
Show Author Affiliations
Ming Wang, Okayama Univ. (Japan)
Osami Wada, Okayama Univ. (Japan)
Ryuji Koga, Okayama Univ. (Japan)


Published in SPIE Proceedings Vol. 2321:
Second International Conference on Optoelectronic Science and Engineering '94
Wang Da-Heng; Anna Consortini; James B. Breckinridge, Editor(s)

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