Ipg Photonics Corporation

Nikolay Evtikhiev

Dan Perlov

Andrey Sadovskiy

Anatolii Zamkov

Nikita Radionov

Valentin Gapontsev

Aleksandr Cherepakhin

Aleksander Cherepakhin

Alexander Zaytsev

Aleksander Zaytsev

An SrBOor PbBOcrystal is configured with a plurality of domains with respective periodically alternating polarity of the crystal axis so that the disclosed crystal is capable of quasi-phasematching (QPM). The disclosed crystal is manufactured by a method including patterning a surface of a crystal block of SrB4O7 or PbB4O7, thereby providing patterned uniformly dimensioned regions with a uniform polarity sign on the surface. The method further includes generating a disturbance on the patterned surface, thereby inverting a sign of crystal polarity of every other region to form the SrBOor SrBOcrystal with a plurality of domains with alternating polarity enabling a QPM mechanism.

Method for manufacturing of patterned SrBBOand PbBOcrystals

The disclosed laser system is configured with a laser source outputting light at a fundamental frequency. The output light is incident on a frequency converter operative to convert the fundamental frequency to a higher harmonic including at least one frequency converting stage. The frequency converter is based on a SrBO(SBO) or PbBO(PBO) nonlinear crystal configured with a plurality of domains. The domains have periodically alternating polarity of the crystal axis enabling a QPM use and formed with each with highly parallel walls which deviate from one another less than 1 micron over a 10 mm distance.

High power laser converter based on patterned SRB4B07 or PBB407 crystal

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Oxford, MA, United States of America

Nikolay Evtikhiev