Passive compensation of laser-induced higher-order aberrations in high-power NIR optics | Zendy

M. Stubenvoll | Zendy; Bernd Schäfer | Zendy; Klaus Mann | Zendy

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Passive compensation of laser-induced higher-order aberrations in high-power NIR optics

Author(s) -

M. Stubenvoll,

Bernd Schäfer,

Klaus Mann

Publication year - 2017

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.25.025407

Subject(s) - optics , wavefront , compensation (psychology) , laser , adaptive optics , polarization (electrochemistry) , deformable mirror , physics , caustic (mathematics) , optical power , materials science , psychology , chemistry , psychoanalysis , mathematical physics

We report a method for passive compensation of thermally induced focal shifts and higher-order aberrations of NIR laser processing optics. Theoretical considerations are made on the elimination of aberrations including polarization effects using a multi-stage compensation element with optical flats of both positive and negative dn/dT. A compensation layout is designed and optimized utilizing numerical simulations of thermo-optic effects. Based on these findings, optical elements for compensation of an F-Theta objective are manufactured. By means of wavefront measurements and beam caustic measurements the feasibility of simultaneous passive compensation of focal shifts and higher-order aberrations is demonstrated.

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