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 Crystal: LIS quantity:  
 Element dimensions:
 aperture mm a   b   length (c)mm  
 Orientation:
 angles theta  °  phi  °  type II
 Application:
 
 Element coating:
 
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Nonlinear optical crystal LIS (LiInS2)

(lithium indium sulphide)
Main properties
Transparency range, µm 0.35- 12.0
Nonlinear coefficient, pm/V d31=8.35, d32=8.3
Symmetry Orthorombic, mm2 point group
Cell parameters, Å a=6.893, b=8.0578, c=6.4816

Typical

Reflection

index

 

1064 nm

532 nm

 

nx=2.1305, ny=2.1668, nz=2.1745

nx=2.2353, ny=2.2841, nz=2.2919

The fundamental wavelength ranges in µm for SHG x-y, Type II, eoe 2.35 - 6.11
x-z, Type I, ooe 1.78 - 8.22
y-z, Type II, oeo 2.35 - 2.67
y-z Type II, oeo 5.59 - 6.11
Total interval covered 1.617 - 8.71

Optical

Damage

Threshold, GW/cm2

 

1053 nm

(t=10 ns)

 

~1

Thermal conductivity k, WM/M°C kx=6.1 ± 0.3; ky=5.9 ± 0.3; kz=7.4 ± 0.3
Absorption edge in the far-IR on 0.2
transparency level
2.58 THz at 118 µm
The parameters of optical elements
Orientation accuracy, arc min < 30
Parallelism arc sec, < 30
Flatness 546 nm l/6
Surface quality, scratch/dig 20/10
Application
  • Optical parametric oscilator (OPO) in range 1 - 12 µm with pump Ti: Sapphire laser

  • Different frequency generation in middle IR range (2-12 µm).

We are able to provide suitable Anti-reflection / Protective, etc. coatings tailored to customer's specifications, reflectivity curves are applied upon request.
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