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Arminas Butkus +370 5 219 4884
V:YAG crystals
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V:YAG crystals

Main features

 

  • High ground state absorption
  • Insignificant excited state absorption
  • The high contrast of the Q-switch
  • Good optical, mechanical, and thermal properties
  • UV-resistant and features a high damage threshold
  • Custom crystals available upon request

 

Application examples

 

  • Passively Q-switched lasers for laser rangefinders, LIDAR, and LIBS systems
Request custom
  • Description
  • Properties
  • Absorption and emission curves
  • Standard specifications

V:YAG is a relatively new saturable absorber. Passive Q-switch operation is available in the spectral range from 1064 nm to 1440 nm, primarily because of an extremely high ground state. These crystals can be used with active laser media such as Nd:YAG, Nd:YAP, Nd:KGW, Nd:YVO4 and provide good lasing characteristics in passive Q-switched lasers. V:YAG features excellent optical, mechanical, and thermal properties and can be grown by the Czochralski method.

Spectroscopic and thermo-mechanical properties
Material σgsa1)@1,34 µm σesa2)@1,34 µm τsa3) Laser crystal λlaser σgsaem4)
V3+:Y3Al5O12 72 × 10-19 7,4 × 10-19 5-37 ns Pr:YAP 0,747 μm 10
Ti:Al2O3 0,78 μm 25
Cr:LiCAF 0,78 μm 80
Nd:GGG 0,93 μm -
Nd:YLF 1,05 μm 15
Nd:YAG 1,06 μm 8
Nd:YVO4 1,06 μm 1,5
Yb:KYW 1,035 μm 70
Nd:YAP 1,34 μm 24
Nd:GdVO4 1,34 μm 30
Er:glass 1,54 μm 45

 

Crystal structure Cubic
Density 4,56 g/cm3
Thermal expansion coefficient 6,14 × 10-6 K-1
Thermal conductivity 11,2 Wm-1K-1
Mohs hardness 8,2
Refractive index 1,[email protected] nm

V:YAG crystals
Initial transmission T0 30-98%@1340 nm
Initial transmission T0 tolerance ±1% (for values larger than 80%)
Clear aperture >90%
Face dimensions tolerance +0,0/-0,1 mm
Parallelism error <20 arcsec
Perpendicularity error <10 arcmin
Protective chamfers <0,1 mm at 45˚
Surface quality 10-5 S-D
Surface flatness <λ/[email protected],8 nm
Wavefront distortion <λ/[email protected],8 
Coatings AR(R<0,2%)@1310-1360 nm on both sides
Laser-induced damage threshold >10 J/cm2@1064 nm, 10 ns
Mount Unmounted
Order your item
Face dimensions Initial transmission SKU PRICE QUANTITY
3x3 mm
30%
7312
540 €
3x3 mm
40%
7313
540 €
3x3 mm
50%
7314
540 €
3x3 mm
60%
7315
540 €
3x3 mm
70%
7316
540 €
3x3 mm
80%
7317
540 €
3x3 mm
85%
7318
540 €
3x3 mm
90%
7319
540 €
3x3 mm
95%
7320
540 €
⌀5 mm
30%
7321
540 €
⌀5 mm
40%
7322
540 €
⌀5 mm
50%
7323
540 €
⌀5 mm
60%
7324
540 €
⌀5 mm
70%
7325
540 €
⌀5 mm
80%
7326
540 €
⌀5 mm
85%
7327
540 €
⌀5 mm
90%
7328
540 €
⌀5 mm
95%
7329
540 €