Memoirs of the Faculty of Engineering, Okayama University
Published by Faculty of Enginerring, Okayama University

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Memoirs of the School of Engineering, Okayama University

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Collimation of Cerenkov-SHG Blue Light with a Parabolic Mirror

Wang, Ming Department of Electrical and Electronic Engineering
Ahmed, Anis Department of Electrical and Electronic Engineering
和田 修己 Department of Electrical and Electronic Engineering
古賀 隆治 Department of Electrical and Electronic Engineering
抄録
Proposed here is a convenient optical system to collimate the crescent shaped blue laser beam radiated from a Cerenkov SHG in channel waveguide configuration. This collimation system is consisted 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 is given to obtain a collimated blue laser beam with an aberration less than 0.07λ. By using an objective lens, the collimated beam can be focused down to a thin beam with the spot size less than 1μm.
ISSN
0475-0071
NCID
AA10699856