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Ti:Sapphire ( Titanium-doped Sapphire, Ti:Al2O3)

Ti:Sapphire crystals combine supreme physical and optical properties with extremely broad lasing range. It is the most widely used tunable solid-state laser material. Its lasing bandwidth can support pulses as short as sub-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 sources such as argon ion lasers or frequency doubled Nd:YAG, Nd:YLF, Nd:YVO4 lasers.

We can provide large ( φ120 x 80mm) Ti:Sapphire crystals oriented along (0001) axis with high doping level, high gain, and high damage threshold. The surfaces of Ti:Sapphire crystals can be cut at the Brewster angle to eliminate the reflection loss.

Please contact Newlight for crystal sizes and doping levels for your applications.

Basic 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

Absorption Coefficient vs. Ti Doping Level

Specifications on Finished Products

Orientation:	The rod axis normal or along the optical axis c
Ti2O3 concentration:	0.06 - 0.5 wt %
Figure of Merit(FOM):	>250 or 150 depending on the doping level
End configurations:	Flat/Flat or Brewster/Brewster ends
Flatness:	λ/10 @ 633 nm
Parallelism:	20 arc sec
Surface finishing:	10/5 scratch/dig to MIL-O-13830A
Wavefront distortion:	λ/4 per inch