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500nm Laser Crystals YVO4 Birefringent Crystal With Good Mechanical

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500nm Laser Crystals YVO4 Birefringent Crystal With Good Mechanical

Country/Region	china
City & Province	wuhan
Categories	Other Non-Metallic Minerals & Products

Product Details

Birefringent Crystal YVO4

Overview:

The Yttrium Orthovanadate (YVO4) is a positive uniaxial crystal grown with Czochralski method. It has good mechanical and physical properties and is ideal for optical polarizing components due to its wide transparency range and large birefringence. It is an excellent synthetic substitute for Calcite (CaCO3) and Rutile (TiO2) crystals in fiber optical applications such as isolators, circulators, beam displacers, Glan polarizers and other polarizing optics.

General Specifications Of YVO4:

Dimension Tolerance	(W±0.1mm) x (H±0.1mm) x (L±0.2mm)
Optical Axis Orientation	±0.5°
Surface Quality	Better than 20/10 Scratch and Dig
Clear Aperture	>90% Central
Surface Flatness	λ/4@633 nm
Parallelism	<15 arc seconds
Perpendicularity	<10 arc minutes
AR Coating	Upon Request

Physical and Optical Properties of YVO4:

Crystal Structure	Zircon tetragonal, space group D4h
Lattice Constants	a=b=7.12, c=6.29
Density	4.22 g/cm³
Mohs Hardness	5 glass like
Hygroscopic Susceptibility	No
Transparency Range	500nm ~ 4000nm
Thermal Conductivity Coefficient	⊥C: 5.10w/m/K
Thermal Conductivity Coefficient	\|\|C: 5.23 w/m/K
Thermal Optical Coefficients	dna/dT=8.5x10^-6/K
Thermal Optical Coefficients	dnc/dT=3.0x10^-6/K
Thermal Expansion Coefficient	aa=4.43x10^-6/K
Thermal Expansion Coefficient	ac=4.43x10^-6/K
Crystal Class	Positive uniaxial with no=na=nb, ne=nc
Refractive Index Birefringence (dn=ne-no) Walk-Off Angle at 45 deg (p)	no=1.9929, ne=2.2154, dn=0.2225, p=6.04°, @630nm
	no=1.9500, ne=2.1554, dn=0.2054, p=5.72°, @1300nm
	no=1.9447, ne=2.1486, dn=0.2039, p=5.69°, @1550nm
Sellmeier Equations (λin um)	no²=3.77834+0.069736/(λ² - 0.04724) - 0.0108133λ²
Sellmeier Equations (λin um)	ne²=4.59905+0.110534/(λ² - 0.04813) - 0.0122676λ²