Cesium Lithium Borate (CLBO) is a laser material which fits perfectly for harmonic generator in UV range. It is widely used for semiconductor inspection, micro processing and UV-LIDAR. Compared with  BBO, it has larger spectral and temperature acceptance, better angle tolerance and smaller walk-off angle. CLBO is good choise for SHG conversion and it is suitable for FHG of high-power Nd:YAG laser systems.

  • Optola offers custom cut angle and dimensions upon request;
  • Various dimensions and coatings are available.

Dimension tolerance: ±0.1mm
Clear aperture: central 90% of the diameter
Flatness: less than λ/8 @ 633nm
Transmitting wavefront distortion: less than λ/8 @ 633nm
      •   Chamfer: ≤0.2mm x 45°
      •   Chip: ≤0.1mm
      •   Scratch/Dig code: better than 10/ 5
      •   Parallelism: ≤20 arc seconds
      •   Perpendicularity: ≤5 arc minutes
      •   Angle tolerance: ≤0.25

Transparency Range


Effective NLO Coefficient

1.01pm/V at 532nm,1.16pm/V at 488nm,0.95pm/V at 1064nm

Damage Threshold


Walk-off Angle

1.78°at 1064nm,1.83°at 532nm,0.98°at 488nm

Angle Acceptance (mrad·cm)

1.02 at 1064nm,0.49 at 532nm,0.84 at 488nm

Spectral  Acceptance (nm·cm)

7.03 at 1064nm,0.13 at 532nm,0.09 at 488nm

Temperature  Acceptance (℃·cm)


NLO Coefficients

deff(Ⅰ)=d36sinθmsin(2 φ)

deff(Ⅱ)=d36sin(2θm)cos(2 φ)

Sellmeier Equations (λ in μm)

CLBO at 20℃



(0.1914< λ <2.09 μm)

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