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Arminas Butkus +370 5 219 4884
CdSe crystals
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CdSe crystals

Main features

 

  • Wide transparency range (0,7 - 24 μm)
  • Reasonably large nonlinearity (d31 = 18 pm/V)
  • Small walk-off angle

 

Application examples

 

  • Long-infrared wavelength infrared radiation generation by DFG, OPO
    schemes
  • Material for infrared optical elements: substrates, polarizers, waveplates,
    etc.
Request custom
  • Description
  • Properties

Cadmium selenide (CdSe) crystals feature infrared transmission up to 24 μm, reasonably large nonlinearity (d31 = 18 pm/V) and small walkoff angle. CdSe crystals can be employed into difference frequency generation (DFG), optical parametric oscillation (OPO) schemes to provide infrared laser radiation above ZGP absorption edge (>12 μm). For instance, CdSe OPO potentially can be pumped by 2 μm Tm-doped, Ho-doped, Tm and Ho-codoped lasers and produce long infrared idler radiation. Besides nonlinear optics applications cadmium selenide crystal material can be used for IR optical elements: substrates, polarizers, waveplates, etc.

Physical and optical properties
Chemical formula  CdSe
Crystal structure Hexagonal, 6mm
Lattice parameters a = 4,2985 Å, c = 7,0150 Å
Optical symmetry Positive uniaxial (ne > no)
Density @288 K 5,81 g/cm3
Mohs hardness 3,25
Transparency range @"0" transmittance level 0,7 - 24 μm
Sellmeier equations @T = 293 K (λ in μm) no2 = 4,2243 + 1,7680 λ2/(λ2 - 0,2270) + 3,1200 λ2/
2 - 3380);

ne2 = 4,2009 + 1,8875 λ2/(λ2 - 0,2171) + 3,6461 λ2/
2 - 3629)
Refractive indices @10,0 μm no = 2,431, ne = 2,452
Thermal conductivity @T = 293 K 6,9 (||c) Wm-1K-1, 6,2 (⊥c) Wm-1K-1
Laser induced damage threshold 60 MW/cm2@10,6 μm, 200 ns
Custom components

4Lasers does not provide standard product list. Please contact us for solutions and pricing.

 

Request custom