The present invention relates to a compound
calcium borate, a
calcium borate optical
crystal, a preparation method of the
calcium borate optical
crystal, and uses of the
calcium borate optical
crystal. According to the present invention, the
chemical formula of the compound is Ca2B2O5, the molecular weight is 181.78, the
space group is P2[1] / c, the
crystal cell parameters comprise that a is 3.5582(5)angstrom, b is 6.3503(8)angstrom, c is 19.299(3)angstrom, beta is 92.386 DEG, V is 435.70(10)angstrom<3>, and Z is 4, and the
solid state reaction method is used to synthesize; the
chemical formula of the
calcium borate optical crystal is Ca2B2O5, the
calcium borate optical crystal belongs to the monoclinic
system, the
space group is P2[1] / c, the
crystal cell parameters comprise that a is 3.5582 (5)angstrom, b is 6.3503(8)angstrom, c is 19.299(3)angstrom, beta is 92.386 DEG, V is 435.70(10)angstrom<3>, and Z is 4; the transmission range of the calcium borate optical crystal is 180-3000 nm, the
birefringence is moderate, and the crystal has characteristics of easy
cutting,
polishing and preserve, stability in air, deliquescence resistance, and insolubility in water; and the calcium borate optical crystal can be used for producing polarizing prisms, phase
delay devices, electro-optical modulators or
beam splitting polarizers and other devices, wherein the devices utilize the
refractive index characteristic of the crystal, and the important applications are provided in the fields of
optics and communication.