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* Welcome To TeO2 Crystal *
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TeO2

TeO2 crystal is one of good acouste-optic medias and has been used for A-O modulator , defector and tunable filter(AOTF).

Physical properties:

Structure

Tetragonal, P41212

Melting Point

730șC

Density

5.99 g/cm3

Mohs Hardness

4.5

Photo-elastic Coefficient at 632.8nm

P11 =0.074P13 =0.340
P31 =0.091P33 =0.241

Figure of Merit

793 x10-18S3/g

Transmittivity

>70 % at 632.8nm

Refractive Index at 632.8nm

no=2.55ne =2.142

Gradient of Refractive Index

≤5 x10-5/cm

Phase Velocity (Transverse Wave[110]-Propagation)

616 m/s

Specifications:

Wavefront distortion

less than l/8 @ 633nm

Dimension tolerance

(W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm)

Clear aperture

> 90% central area

Flatness

l/8 @ 633nm

Scratch/Dig

10/5 to MIL-O-13830A

Parallelism

better than 20 arc seconds

Perpendicularity

5 arc minutes

Angle tolerance

qD < ± 0.5°, fD < ±0.5°

   

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