Ti:Sapphire
Ti:Sapphire(Al2O3:Ti3+)
- titanium-doped sapphire crystals combine supreme physical and optical
properties with broadest lasing range, It's indefinitely long stability
and useful lifetime added to the lasing over entire band of 660-1050 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 few of existing and potential applications.
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. Ti:Sapphire crystal has 3.2us fluorescence lifetime, it can be effectively pumped by short pulse flashlamps in powerful laser systems.
Physical and Optical Properties
Chemical formula: Ti3+: Al2O3
Crystal structure: Hexagonal
Melting point: 2050 deg.C
Density: 3.98 g/cm3
Mohs hardness: 9
Thermal conductivity: 0.11 cal/(deg.C xsec x cm)
Specific heat: 0.10 cal/g
Laser action: 4-Level Vibronic
Lattice constants: a = 4.748, c = 12.957
Fluorescence lifetime: 3.2 ¦Ěsec (T = 300 K)
Tuning range: 660-1050 nm
Absorbtion range: 400-600 nm
Emission peak: 795 nm
Absorption peak: 488 nm
Refractive index: 1.76 @ 800 nm"
Specifications of Ti:Sapphire
1) Ti2O3 conentration: 0.06-0.5 wt%
2) Figure of Merit: 100~300
3) Diameter: 2~50mm
4) Path Length: 2~130mm
5) End configuration: flat/flat or Brewster/Brewster ends or Specified
Typical Specification and Tolerance:
1) Orientation: Optical axis C normal to rod axis
2) a(490): 1.0~7.5cm-1
3) Flatness: Lambda/10 @633nm
4) Parallelism: 10 arc sec
5) Surface quality: 10/5 scratch/dig
6) Wavefront distortion: <1/4 per inch
