Titanium Doped Sapphire Crystals
Ti:Sapphire Absorption and Fluorescence ranges
STANDARD SPECIFICATIONS
|
Orientation |
Optical axis C normal to rod axis |
|
Ti2O3 concentration |
0.03-0.25 wt % |
|
Figure of Merit |
> 150 (>300 available on special requests) |
|
Size |
up to 20 mm dia and up to 130 mm length |
|
End configurations |
flat/flat or Brewster/Brewster ends |
|
Flatness |
λ/10 @ 633 nm |
|
Parallelism |
10 arcsec |
|
Surface Quality |
10-5 scratch & dig (MIL-PRF-13830B) |
|
Wavefront distortion |
λ/4 inch |
Physical and Laser Properties
|
Chemical formula |
Ti3+:Al2O3 |
|
Crystal structure |
Hexagonal |
|
Lattice constants |
a=4.748, c=12.957 |
|
Density |
3.98 g/cm3 |
|
Mohs hardness |
9 |
|
Thermal conductivity |
0.11 cal/(°C×sec×cm) |
|
Specific heat |
0.10 cal/g |
|
Melting point |
2050°C |
|
Laser action |
4-Level Vibronic |
|
Fluorescence lifetime |
3.2 µsec (T=300K) |
|
Tuning range |
660-1050 nm |
|
Absorption range |
400-600 nm |
|
Emission peak |
795 nm |
|
Absorption peak |
488 nm |
|
Refractive index |
1.76 @ 800 nm |
| EKSMA Optics Ti:Sapphire Crystals
79.29 kB |
Titanium Sapphire (Al2O3:Ti3+) crystals indefinitely long stability and useful lifetime added to the lasing over entire band of 600-1050 nm challenge "dirty" dyes in variety of applications. Medical laser systems, lidars, laser spectroscopy, direct femtosecond pulse generation by Kerr-type mode-locking - there are a lot of existing and potential applications of Ti:Sapphire crystals.
The absorption band of Ti:Sapphire centered at 490 nm makes it suitable for variety of laser pump sources - argon ion, frequency doubled Nd:YAG and YLF, copper vapour lasers. Because of 3.2μm fluorescence lifetime Ti:Sapphire crystals can be effectively pumped by short pulse flashlamps in powerful laser systems.