Calcium metaborate birefringent crystal, preparation method and use thereof

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United States of America Patent

PATENT NO 11898268
APP PUB NO 20200216976A1
SERIAL NO

16627556

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A calcium metaborate birefringent crystal and a preparation method and use thereof, the crystal having a chemical formula of CaB2O4 and a molecular weight of 125.70, and belonging to the orthorhombic crystal system and space group Pbcn with unit-cell parameters a=11.60(4)Å, b=4.28(8)Å, c=6.21(6)Å, and Z=4, wherein the calcium metaborate birefringent crystal is a negative biaxial crystal with a transmission range of 165-3400 nm and a birefringence between 0.09-0.36; the crystal is applicable to infrared-visible-ultraviolet-deep ultraviolet bands, and is grown by a melt method, a flux method, a Bridgman method or a heat exchange method; the crystal obtained by the method of the present invention is easy to grow and easy to process; and can be used for making polarizing beam-splitting prisms.

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Patent Owner(s)

Patent OwnerAddress
XINJIANG TECHNICAL INSTITUTE OF PHYSICS & CHEMISTRY CHINESE ACADEMY OF SCIENCES830011 NO 40 SOUTH BEIJING ROAD THE XINJIANG UYGUR AUTONOMOUS REGION URUMQI ATTACHED 1 URUMQI CITY THE XINJIANG UYGUR AUTONOMOUS REGION 830011

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Xinglong Urumqi, CN 65 9781
Pan, Shilie Urumqi, CN 20 23
Zhang, Fangfang Urumqi, CN 20 47

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