Optical Calcite Crystals

We offer various specifications of optical calcite crystals. This is a natural mineral, and the monocalcite crystal is a negative uniaxial crystal with high birefringence and a wide transmission spectral range from 200nm to 2500nm. Although a fairly soft crystal that can be easily scratched, it is still an ideal material for making polarizing prisms and other optical devices.

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Catalog Number

ACMA00027701

Product Name

Optical Calcite Crystals

Melting Point

730 ℃

Dimension

0.2-60mm

Coating

Upon Customer’s Specification

Flatness

λ/8

Parallelism

<10 arc sec

Surface Quality

20/10 S/D

ClearAperture

>95% of full aperture

Density

2.7 g/cm³

Transparency Region

350-2300nm

Wavelength

350-2300nm

Refractive Indices

no = 2.260, ne = 2.142

Expansion Coefficient

(Thermal expansion coefficient) aa=24.39×10^-6/K, ac=5.68×10^-6/K

Damage Threshold

>1GW/cm²

Sellmeier Equations

no²=2.69705 + 0.0192064/(λ²-0.01820) - 0.0151624λ² ne²=2.18438 + 0.0087309/(λ²-0.01018) - 0.0024411λ²

Moh'sHardness

3

MSDS

COA

Spec Sheet

Features And Benefits

Wide transparent spectral range 0.2μm to 2.5μm; high birefringence; soft and easy to scratch

Application

Polarizers, Beam divergent element, Laser gate.

• Catalog Number: ACMA00027701
• Product Name: Optical Calcite Crystals
• Melting Point: 730 ℃
• Dimension: 0.2-60mm
• Coating: Upon Customer’s Specification
• Flatness: λ/8
• Parallelism: <10 arc sec
• Surface Quality: 20/10 S/D
• ClearAperture: >95% of full aperture
• Density: 2.7 g/cm³
• Transparency Region: 350-2300nm
• Wavelength: 350-2300nm
• Refractive Indices: no = 2.260, ne = 2.142
• Expansion Coefficient: (Thermal expansion coefficient) aa=24.39×10^-6/K, ac=5.68×10^-6/K
• Damage Threshold: >1GW/cm²
• Sellmeier Equations: no²=2.69705 + 0.0192064/(λ²-0.01820) - 0.0151624λ² ne²=2.18438 + 0.0087309/(λ²-0.01018) - 0.0024411λ²
• Moh'sHardness: 3