Collimation of Cerenkov SHG blue light for fine focusing

Ming Wang; Osami Wada; Ryuji Koga

doi:10.1117/12.182169

5 August 1994 Collimation of Cerenkov SHG blue light for fine focusing

Ming Wang, Osami Wada, Ryuji Koga

Proceedings Volume 2321, Second International Conference on Optoelectronic Science and Engineering '94; (1994) https://doi.org/10.1117/12.182169
Event: Optoelectronic Science and Engineering '94: International Conference, 1994, Beijing, China

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 .

Citation Download Citation

Ming Wang, Osami Wada, and Ryuji Koga "Collimation of Cerenkov SHG blue light for fine focusing", Proc. SPIE 2321, Second International Conference on Optoelectronic Science and Engineering '94, (5 August 1994); https://doi.org/10.1117/12.182169

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