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Titanium doped Sapphire (Ti3+:Al2O3 or Ti:Sapphire)
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KGW:Nd
Titanium doped Sapphire (Ti3+:Al2O3 or Ti:Sapphire) is the most widely used crystal for wavelengths tunable lasers. It combines the excellent thermal, physical and optical properties of Sapphire with the broadest tunable range of any known material. It can be lased over the entire band from 660 to 1100 nm. Frequency doubling provides tunability over the blue-green region of the visible spectrum.
   Ti:Sapphire crystals are active media for highly efficient tunable solid-state lasers. They demonstrate good operation in the pulsed-periodic, quasi-CW and CW modes of operation. Ti:Sapphire is a 4-level, Vibronic laser with fluorescence lifetime of 3.6 µm. The peak of the absorption band is 490 nm which makes it an excellent material for pumping with a variety of sources operating in the green-argon ion, copper vapour, frequency-doubled Nd:YAG, and dye lasers are routinely used. Crystals have also been flashlight pumped by lamps designed to allow short fluorescence lifetime. These factors and broad tunability make it an excellent replacement for several common dye lasing materials. The crystals are grown using the Czochralsky and the Ciropolous techniques.
MATERIAL PHYSICAL AND LASER PROPERTIES:
Chemical formula Ti3+:Al2O3
Crystal structure hexagonal
Lattice parameters, Å a = 4.748; c = 12.957
Refractive indexes np = 1.759; nm = 1.767
Birefrigence 0.0082
Density, g/cm3 3.98
Mohs hardness 9
Thermal conductivity at 25°C, W x cm-1 x °K-1 -
perpendicular to c-axis 0.35
parallel to c-axis 0.33
Specific heat at 18°C, J x kg-1 x °K-1 761
Thermal expansion coefficient (20 - 100°C) -
perpendicular to c-axis 4.78 x 10-6 x °K-1
parallel to c-axis 5.31 x 10-6 x °K-1
Syngony triangular
Axial characteristic uniaxial

Rods with round cross-sections and slabs are manufactured:
Tuning range, nm 680 - 1100
Pumping range, nm 450 - 532
Ti dopant concentration, at.% 0.02 ÷ 0.35
Absorption coefficient at 510 nm, cm-1 0.5 ÷ 2.5
FOM >200
Orientation 90° to c axis
Geometry flat-flat / Brewster
Endsunparallelity 10"
Flatness 0.2
Orientation tolerance < 5°
Broadband AR coatings, % < 0.2
Diameter, mm (3 ÷ 40) ± 0.1
Length, mm (10 ÷ 140) ± 0.5

We supply rods and slabs with different cross-sections, dimensions and coatings. Different dopant compositions with different concentrations are available for specific customer requirements.

I N Q U I R Y    F O R M :

Material:
Quantity of elements:
Application:
For example: SHG@1064; SFG@800+267->200; DFG@780-842->10600; OPO@355->460÷560+960÷1150; etc.
polished sites:

BLOCK    or  BLOCK
  a-b b-c a-c
or d  
Dopant conc.:
 % ;      Orientation:
Dimensions/Tolerances:
 For example:
10.0 +/- 0.1
Coating:

For example: ARC s1/s2 1064 R<0.25%; ARC s1/s2 1064 R<0.25%+532<0.5%;
BBAR s1/s2 1064 R<1%+3÷10<5% etc.
a = mm;
c = mm		 b = mm or
dia. = mm;
This field is for additional information such as application,
comments, add. requirements etc.
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