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LiIO3 - Lithium Iodate
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  • LiIO3 - Lithium Iodate

  • LiIO3, for the high NLO coefficient, is used for harmonic generation and mixing of lasers. CASTECH provides large size of LiIO3 crystals with high optical homogeneity as well as AR-coating services.
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Introduction

Lithium Iodate (LiIO3) is one of oldest commercial NLO crystals. With high NLO coefficient, LiIO3 is used for frequency-doubling, tripling and mixing of low and medium power lasers. CASTECH provides large size of LiIO3 crystals with high optical homogeneity. They can be as-cut or polished, and sealed housing with AR-coated windows is also available.

 

Basic Properties

  Crystal Structure

 Hexagonal, Point Group 6 

  Transparency Range

  300-5000 nm

  Nonlinear Coefficient

  d15 = - 5.5 × 10-12 m/V

  Refractive Index

  negative uniaxial

  no = 1.8571, ne = 1.7165 (λ = 1064 nm)

        Sellmeier Equations: (λ in μm)

  no2 = 3.415716 + 0.047031 / (λ2 - 0.035306) - 0.008801 λ2

  ne2 = 2.918692 + 0.035145 / (λ2 - 0.028224) - 0.003641 λ2

 

Specifications

  Dimension Tolerance

(W ± 0.2 mm) × (H ± 0.2 mm) × (L + 0.5/-0.2 mm)

  Clear Aperture 

central 90% of the diameter

  Surface Quality (Scratch/Dig)

20/10 to MIL-PRF-13830B

  Flatness

 λ/4 @633 nm

  Transmitted Wavefront Distortion

 ≦ λ/4 @633 nm

  Parallelism

≦ 30 arc sec

  Perpendicularity

≦ 15 arc min

  Angle Tolerance

≦ 0.5°

  Quality Warranty Period

one year under proper use.

 

Notes

  • LiIO3 is highly hygroscopic.
  • Please keep it in a dry environment, and sealed housing is recommended.
  • CASTECH provides both polishing and sealed housing for LiIO3 crystal.
  • LiIO3 is not recommended for high power applications, because of the low damage threshold.

 

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