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AssigneeIpg Photonics Corporation
InventorsDan PERLOV, Alexander ZAYTSEV, Anatolli ZAMKOV, Nikita RADIONOV, Aleksandr CHEREPAKHIN, Nikolay EVTIKHIEV, Andrey SADOVSKIY
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An SrB4O7 or PbB4O7 crystal 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 SrB4O7 or SrB4O7 crystal with a plurality of domains with alternating polarity enabling a QPM mechanism.
An SrB4O7 or PbB4O7 crystal is configured with a plurality of domains with respective periodically alternating polarity of the crystal axis enabling QPM use, wherein the domains have highly parallel walls deviating from one another less than 1 micron over a 10 mm distance.
A method of fabricating a periodic structure in a strontium tetraborate (SrB4O7) or lead tetraborate (PbB4O7) nonlinear crystal, comprising:
Dependencies are inferred from the claim text.