High Birefringence Laser Crystals 0.5deg Negative Uniaxial Crystal

Price Negotiable

Price: Negotiable

MOQ: 1pc

Delivery Time: Negotiable

Brand: STAR OPTIC

Product Description

Birefringent Crystal Calcite

Overview:

Calcite is a negative uniaxial crystal that has high birefringence, wide spectral transmission and availability in reasonably sized rhombs.

Although is a fairly soft crystal and is easily scratched, it is an ideal material used as visible and near IR polarizers, such as Glan Thompson, and Glan Taylor, Glan laser polarizer.

General Specifications Of Calcite:

Dimension Tolerance	±0.1mm
Optical Axis Orientation	±0.5deg
Surface Quality	20/10 Scratch and Dig
Clear Aperture	>90%
Surface Flatness	<λ/4@633nm
Wavefront Distortion	<λ/2@633nm
Parallelism	<15 arc seconds
Perpendicularity	<10 arc minutes
AR Coating	Per your Request

Physical and Optical Properties of Calcite:

Crystal Structure	Crystalline rhombihedral
Density	2.7 g/cm³
Mohs Hardness	3
Hygroscopic Susceptibility	Low
Transparency Range	350nm ~ 2300nm
Thermal Expansion Coefficient	aa=24.39x10^-6/K
Thermal Expansion Coefficient	ac=5.68x10^-6/K
Crystal Class	Negative uniaxial with no=na=nb, ne=nc
Refractive Index Birefringence (Δn=ne-no) Walk-Off Angle at 45deg(ρ)	no=1.6557, ne=1.4852, Δn= -0.1705, ρ=6.32 @633nm no=1.6381, ne=1.4783, Δn= -0.1598, ρ=6.20 @1300nm
Sellmeier Equations (λ in um)	no²=2.69705+0.0192064/(λ²-0.01820)-0.0151624λ² ne²=2.18438+0.0087309/(λ²-0.01018)-0.0024411λ²