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Stock List Crystals & Substrates

Stock List Targets

Basic Properties

Transparency  Range

High transmittance from 0.4 to 5mm 

Crystal Symmetry

Zircon Tetragonal, space group D_4h 

Crystal Cell

A = b = 7.12 Å
C = 6.29 Å
 

Density

4.22 g/cm³ 

Mohs Hardness

5, glass-like 

Hygrocopic Susceptibility

Non-hygroscopic 

Thermal Expansion Coefficient^.

α_a =  4.43 x 10^-6 / K
α_c =  11.37 x 10^-6 / K
 

Thermal Conductivity Coefficient

// C: 5.23 W/m/K
^ C: 5.10 W/m/K
 

Crystal Class

Positive uniaxial  with n₀ = n_a = n_b , n_e = n_c 

Thermal Optical Coefficient^.

dn_a/dT = 8.5 x 10^-6 /K
dn_c/dT = 3.0 x 10^-6 /K

List of Optical Crystals

Materials

Refractive Index

Transmission
Range (mm)

Density
(g/cm³)

Thermal Expansion 
Coefficient (10^-6/K) 

BK7 glass

1.5164 (588 nm)

0.330 – 2.1

2.51

7.5 

SF11 glass

1.78472 (588 nm)

0.370 – 2.5

4.74

6.8 

F2 glass

1.62004 (588 nm)

0.420 – 2.0

3.61

8.2 

Fused Silica

1.4858 (308 nm)

0.185 – 2.5

2.20

0.55 

CaF₂

1.399  (5.0 mm)

 0.170 – 7.8

3.18

 18.85 

BaF₂

 1.460 (3.0 um)

 0.15 – 12.0

4.88

 18.4 

Sapphire

1.755 (1.0mm)

0.180 – 4.5

3.98

8.4 

Silicon

3.4179 (10mm)

 1.200 – 7.0

2.33

 4.15 

Ge

4.003 (10 mm)

 1.900 – 16

5.33

 6.1 

ZnSe

2.40  (10 mm)

0.630 – 18

5.27

7.8 

ZnS

2.2 (10mm)

0.380 –14

4.09

6.5 

LiF

1.39 (500 nm)

 0.150 – 5.2

2.64

37 

KBr

1.526 (10 mm)

 0.280 – 22

2.75

43 

 MgF₂

n_o =  1.3836  n_e = 1.3957 (405 nm)

0.130 – 7.0

7.37

a: 13.7         b: 8.48 

YVO₄

n_o = 1.9500  n_e = 2.1554 (1.3 mm)

0.400 – 5.0

4.22

a: 4.46       b: 11.37 

Calcite

n_o =  1.6557  n_e = 1.4852 (633 nm)

0.210 – 2.3

2.75

a: 24.39        b: 5.68 

Quartz

n_o =  1.5427  n_e = 1.5518 (633 nm)

0.200 – 2.3

2.65

7.07 

α-BBO

n_o =  1.6749  n_e = 1.5555 (532 nm)

0.190 – 3.5

3.85

a: 4.0           c: 36 

LiNbO₃

 n_o =  2.2863  n_e = 2.2027 (633 nm)

0.370 – 4.5

4.64

a: 16.7          c: 2.0 

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