| Product Name | LiIO3 Crystals |
| Catalog No. | OPTIX-0007 |
| Chemical Formula | LiIO3 |
| Crystal Structure | Hexagonal, Point Group 6 |
| Lattice Parameters | 300-5000 nm |
| Density | 4.487 g/cm3 |
| Mohs Hardness | 3.5–4.0 |
| Melting Point | 420℃ |
| Clear Aperture | central 90% of the diameter |
| Parallelism | ≤ 30 arc sec |
| Perpendicularity | ≤ 15 arc min |
| Surface Quality (Scratch/Dig) | 20/10 to MIL-PRF-13830B |
| Angle Tolerance | ≤ 0.5° |
| Flatness | λ/4 @633 nm |
| Quality Warranty Period | one year under proper use. |
| Nonlinear Optical Properties |
| NLO Coefficient | d15 = - 5.5 pm/V
d31= 4.4 pm/V (@1064 nm) |
| Effective NLO Coefficients | deff = d31sinθ |
| Transmitted Wavefront Distortion | ≤ λ/4 @633 nm |
| Damage Threshold | > 100MW/cm2 @ 1064 nm, 10 ns |
| Linear Optical Properties |
| Transparency Range | 300-5000 nm |
| Absorption Coefficient | < 0.05 /cm @1064 nm |
| 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 |
Note: The data provided is for reference purposes. We recommend consulting with our technical team to verify suitability for your application.
LiIO3 Crystal Product Options
- Forms: as-grown boules, slabs/plates, wafers, windows, polished substrates.
- Cuts / Orientations: c-cut (Z-cut), X/Y cuts and custom orientations for phase-matching and device geometry.
- Surface Finish: as-cut, ground, polished (optical polish to customer spec).
- Coatings & Housing: AR, BBAR, and P coatings (custom wavelength ranges), sealed housings (recommended for hygroscopic protection).
- Sizes: custom cut to size; typical lab samples to larger crystals (contact sales with required aperture and thickness).
- Custom Services: orientation certs, interferometric transmitted wavefront testing, AR-coating, mounting and hermetic sealing.
If you need a quote for a specific geometry, wavelength and coating, tell us the required aperture, thickness, wavelength(s) and environment (sealed vs. open) and we'll provide options.
LiIO3 crystals excel in numerous nonlinear optical applications:
- Second harmonic generation (SHG) / frequency doubling, especially for low–medium power lasers.
- Frequency mixing and tripling (sum/difference frequency generation).
- Acousto-optic / piezoelectric devices and transducers.
- Laser components for UV and visible generation (e.g., historic use in certain ruby lasers and blue/green generation).
Fig 1. α-LiIO3 single crystal. [1]
