Improved beam quality from a high energy optical parametric oscillator using crystals with orthogonal critical planes | Zendy

Øystein Farsund | Zendy; Gunnar Arisholm | Zendy; Gunnar Rustad | Zendy

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Improved beam quality from a high energy optical parametric oscillator using crystals with orthogonal critical planes

Author(s) -

Øystein Farsund,

Gunnar Arisholm,

Gunnar Rustad

Publication year - 2010

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.18.009229

Subject(s) - optics , optical parametric oscillator , laser beam quality , fresnel number , quality (philosophy) , beam (structure) , resonator , parametric statistics , materials science , fresnel equations , light beam , energy (signal processing) , physics , laser beams , laser , refractive index , diffraction , mathematics , statistics , quantum mechanics

We demonstrate with simulations and experiments that an optical parametric oscillator using two different crystals with orthogonal walk-off planes can generate a symmetric, high-quality beam even if the resonator has a high Fresnel number. In the experiments we used KTA and BBO crystals to convert 5 ns pulses at 1.06 microm to 1.7 microm pulses with more than 10 mJ energy and beam quality M(2) approximately 2.

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