Ti:Sapphire crystal is the most widely used tunable solid-state laser material combining the supreme physical and optical properties with the extremely broad lasing range. Its lasing bandwidth can support pulses < 10fs making it the crystal of choice for femtosecond mode-locked oscillators and amplifiers.
The absorption band of Ti:Sapphire centers at ~ 490 nm so it may be conveniently pumped by various laser sources such as argon ion lasers or frequency doubled Nd:YAG, Nd:YLF, Nd:YVO4 lasers at ~ 530nm.
Applications
The tunable wavelengths that cover a broad range from 700 to 1000 nm make Ti:Sapphire an excellent substitute for dye lasers in many applications.
Doubling by NLO crystals such as BBO in an ultra-thin, Ti:Sapphire can be used to generate UV and DUV (up to 193 nm ) laser with ultrafast pulses below 10fs.
Ti:Sapphire is also widely usedas the pump source of OPOs to expand the tunable range.
Properties
|
Chemical formula |
Ti3+:Al2O3 |
|
Crystal structure |
Hexagonal a=4.758, c=12.991 |
|
Density |
3.98 g/cm3 |
|
Melting point |
2040oC |
|
Mohs hardness |
9 |
|
Thermal conductivity |
52 W/m/K |
|
Laser action |
4-level vibronic |
|
Fluorescence lifetime |
3.2 µs (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 |
Specifications
|
Ti2O3 concentration |
0.06 - 0.5wt % |
|
Orientation |
Optical axis C normal to rod axis |
|
Figure Of Merit (FOM) |
150~250 Upon customers request |
|
Wavefront Distortion |
λ/4@633nm |
|
Flatness |
λ/8 @ 633 nm |
|
Parallelism |
10 arc sec |
|
Surface finishing |
10/5 scratch/dig to MIL-O-13830A |
|
Clear Aperture |
>90% |
|
Chamfer |
<0.1mmx45° |
|
End configurations |
Flat/Flat or Brewster/Brewster ends |
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