Titanium doped Sapphire Crystal
Ti:Sapphire

Basic Properties

Chemical Formula.

Ti+3:A12O3

Crystal Structure

Hexagonal

Lattice constants

A = 4.758
C = 12.991

Melting Point

2040 °C

Mohs hardness

9

Thermal conductivity

52 W/m/K

Specific heat

0.42 W·s/g/k

Laser action

4-Level Vibronic

Fluorescence lifetime

3.2 ms /T = 300K)

Tuning range

660 – 1050 nm

Absorbtion range

400 – 600 nm

Emission peak

795 nm

Absorption peak

488 nm

Refractive index

1.76 @ 800 nm

 

Standard Product Specifications

Orientation

Optical axis C normal to rod axis

Ti2O3 concentration

0.06 – 0.5 wt %

Figure Of Merit

>200 (>300 available on special requests)

End configurations

Flat / Flat or Brewster / Brewster ends

Flatness

l/10 @ 633 nm

Parallelism

10 arc sec

Surface finishing

<10/5 scratch / dig to MIL-O-13830A

Wavefront distortion

<l/4 per inch

 

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

no =  1.3836  ne = 1.3957 (405 nm)

0.130 – 7.0

7.37

a: 13.7
b: 8.48

 

YVO4

no = 1.9500  ne = 2.1554 (1.3 mm)

0.400 – 5.0

4.22

a: 4.46
b: 11.37

 

Calcite

no =  1.6557  ne = 1.4852 (633 nm)

0.210 – 2.3

2.75

a: 24.39
b: 5.68

 

Quartz

no =  1.5427  ne = 1.5518 (633 nm)

0.200 – 2.3

2.65

7.07

 

α-BBO

no =  1.6749  n= 1.5555 (532 nm)

0.190 – 3.5

3.85

a: 4.0
c: 36

 

LiNbO3

 no =  2.2863  ne = 2.2027 (633 nm)

0.370 – 4.5

4.64

a: 16.7
c: 2.0