Photox Optical Systems

Lithium Iodate Crystal

LiIO3

Lithium Iodate LiIO3 crystal is a negative uniaxial crystal with symmetry 6. The high quality Lithium Iodate crystal is characterized by broad transparency and phase matchable range, large NLO coefficient and high temperature stability.

Transparency range 0.3-5.5µm
Melting point 420°C; and stable at the range of 20°C-250°C
Density 4.49 g/cm2
Mohs hardness 3.5
Deliquescence sensitive
Dispersion relations or Sellmeier equations no2(w)=2.083648 + 1.332068w2 / (w2- 0.035306)- 0.008525 w2
ne2(w)=1.673463 + 1.245229w2 / (w2- 0.028224)- 0.003641 w2
where w is measured in mm
Typical refractive indices
mm no ne
0.3472 1.9822 1.8113
0.5372 1.8982 1.7479
0.6943 1.8752 1.7304
1.0642 1.8564 1.7164
Effective SHG coefficient 8.5 x d36 (KDP)
Surface damage thresholds
w (mm) no ne
0.3472 1.9822 1.8113
0.5321 1.8982 1.7479
0.6943 1.8752 1.7304
1.0642 1.8564 1.7164
Absorption coefficient a= 0.3 cm-1 at 347nm, 0.06 at 1064nm cm-1 at 1064nm

Applications

  1. Extra- or intra-cavity frequency doubler of Nd:YAG laser, Diode laser, Ti:Sapphire laser and Ruby laser.

  2. Optical parametric oscillator pumped by the fundamental and second harmonic of Ruby laser, second and third harmonics of Nd:YAG laser.

  3. Up- or down-conversion radiation from the visible to infrared (5.5µm) range.