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Calcite Crystals

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Calcite Crystals
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Orientation: < 111 > +/-5deg

Diameter Tolerance : +0.0 /-0.1mm

Thickness Tolerance: +/-0.2mm

Surface Quality: better than 10/5 scratch/dig

Parallelism: < 30 arcsec

Flatness: < λ/8 @632.8nm

Perpendicularity: < 5 arcmin

Wavefront Distortion: < λ/2 @632.8nm

Coating: Coating upon Request


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Product Features

 

 When an electric field (E) is applied to an electro-optic (E-O) crystal, the refractive index of E-O crystal will change linearly to electric field. The phenomenon is called linear electro-optic effect. For KD*P crystal, for example, the change of the refractive index (Dn) is Dn = 0.5no3r63E if both the directions of light propagation and electric field are along the z-axis, where no is refractive index without electric field and r63 is electro-optic coefficient of KD*P.There are two kinds of E-O modulations. One is longitudinal E-O modulation if the directions of electric field and light propagation are the same. 

01


The KDP isomorphic crystals are normally used in this scheme. If the directions of electric field and light propagation are perpendicular, it is called transverse E-O modulation. 

02


The LiNbO3, MgO:LiNbO3, ZnO:LiNbO3, BBO and KTP crystals are usually employed in this scheme.

Product parameters

Properties:


Crystal Structure

Cubic

Density

4.5 g/cm3

Transmission Range

250 - 5000 nm

Melting Point

1970 °C

Specific Heat

0.59 W·s /g /K

Thermal Conductivity

14 W/m /K

Thermal Shock Resistance

790 W /m

Thermal Expansion

6.9x10-6 /K

dn/dT, @ 633nm

7.3x10-6 /K-1

Mohs Hardness

~ 8.5

Refractive Index

1.8245 @ 0.8mm, 1.8197 @ 1.0mm,

1.8121 @ 1.4mm


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