Nonlinear LBO Crystal

Superior infrared material sapphire

Sapphire is a superior optical material possesses excellent optical, chemical and physical properties.

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products Details

The hardest of the oxide crystals, sapphire retains its high strength at high temperatures, has good thermal properties and excellent transparency. It has high transmittance from 1.5 μm to 6.0 μm in the middle infrared. The other hand, it is chemically resistant to common acids and alkali at temperatures up to 1000 °C as well as to HF below 300 °C. These properties encourage its wide use in hostile environments where optical transmission in the range from the vacuum ultraviolet to the near infrared is required.


Physical and Optical Properties:

Crystal Type

Hexagonal

Lattice Parameter

a=4.75Å, c=12.97Å

Transmission Band

0.15-6 μm

Melting Point

2040 ℃

Thermal Conductivity

4W/cm/℃

Refractive Index

1.623 at 5μm

Specific Heat

0.18cal/g/℃

Thermal Expansion

7.7x10-6/℃

Mohs Hardness

9

Density

3.98g/cm3

Specifications:

Material

Sapphire

Dimension Tolerance

+0.0, -0.1mm

Thickness Tolerance

±0.1mm

Surface Quality

40/20

Clear Aperture

>90%

Flatness

λ/4@632.8nm

Parallelism

3'

Bevel

<0.25mm×45°

Coating

According to Customer Request




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