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Arminas Butkus +370 5 219 4884
Ti:Sapphire crystals
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Ti:Sapphire crystals

Main features

 

  • Excellent thermal conductivity
  • Broad gain bandwidth
  • Wide range of possible pump wavelengths (typically 532 nm)
  • Custom crystals available upon request

 

Application examples

 

  • Mode-locked lasers with ultrashort pulses
  • Multi-pass amplifiers and regenerative amplifiers
Request custom
  • Description
  • Properties
  • Standard specifications

Titanium-doped sapphire (Ti3+:Al2O3) is a widely used transition-metaldoped laser crystal. The Ti3+ ion has a very large gain bandwidth, that opens possibility to obtain very wide wavelength tunability realized in short pulse lasers. To obtain crystals with good optical quality Ti3+ doping concentration should not exceed 0,25 at.%. Thus the crystals with thickness of several millimeters have to be used. The crystal is characterized by short upper-state lifetime and high saturation power. All these facts lead to necessity of strongly focused pump beam usage.

Spectroscopic and thermo-mechanical properties
Absorption peak wavelength ~500 nm
Absorption cross-section at peak wavelength 38×10-20 cm2
Laser wavelength 790 (670-1070) nm
Lifetime of energy level 3,2 μs
Emission cross-section @790 nm 41×10-20 cm2
Refractive index @800 nm 1,76
Crystal structure hexagonal
Density 3,98 g/cm3
Mohs hardness 9
Thermal conductivity 33 Wm-1K-1
dn/dT 13×10-6 K-1
Thermal expansion coefficient 5×10-6 K-1
Typical doping level 0,1-0,25 at.%
Ti:Sapphire crystals
Orientation a-cut
Absorption 90-95% of 532 nm pump radiation
Figure of merit >150 (for 15 mm and longer crystals)
Clear aperture >90%
Face dimensions tolerance +0/-0,1 mm
Length tolerance ±0,1 mm
Parallelism error <30 arcsec
Perpendicularity error <10 arcmin
Protective chamfers <0,15 mm at 45˚
Surface quality 10-5 S-D
Surface flatness <λ/[email protected],8 nm (for 6x6 mm and smaller crystals)
Wavefront distortion λ/[email protected],8 nm
Coatings AR(R<1%)@532 nm + AR(R<0,3%)@750-850 nm
on both faces
LIDT >2 J/cm2@800 nm, 300 ps
Mount Unmounted
Order your item
Face dimensions Length End faces Coatings SKU price quantity
3x3 mm
5 mm
Right-angle cut
AR/[email protected]+750-850 nm
6632
980 €
3x3 mm
5 mm
Brewster cut
uncoated
6633
880 €
6x6 mm
7 mm
Right-angle cut
AR/[email protected]+750-850 nm
6634
1080 €
6x6 mm
7 mm
Brewster cut
uncoated
6635
980 €
6x6 mm
10 mm
Right-angle cut
AR/[email protected]+750-850 nm
6636
1080 €
6x6 mm
10 mm
Brewster cut
uncoated
6637
980 €
6x6 mm
15 mm
Right-angle cut
AR/[email protected]+750-850 nm
6638
1180 €
6x6 mm
15 mm
Brewster cut
uncoated
6639
1080 €
⌀12 mm
15 mm
Right-angle cut
AR/[email protected]+750-850 nm
6640
2150 €
⌀6 mm
20 mm
Brewster cut
uncoated
6641
1080 €
⌀16 mm
20 mm
Right-angle cut
AR/[email protected]+750-850 nm
6642
3950 €
⌀20 mm
25 mm
Right-angle cut
AR/[email protected]+750-850 nm
6643
4950 €
⌀30 mm
25 mm
Right-angle cut
AR/[email protected]+750-850 nm
6644
Request
⌀40 mm
25 mm
Right-angle cut
AR/[email protected]+750-850 nm
6645
Request
⌀50 mm
25 mm
Right-angle cut
AR/[email protected]+750-850 nm
6646
Request
50x50 mm
30 mm
Right-angle cut
AR/[email protected]+750-850 nm
6647
Request
⌀6 mm
20 mm
Right-angle cut
AR/[email protected]+750-850 nm
6648
1180 €