QPM 0.1mm Linbo3 Laser Crystals Optical AR Coating
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LiNbO3
- LiNbO3 Crystal is widely used as frequency doublers for wavelength >1μm and optical parametric oscillators(OPOs) pumped at 1064 nm as well as quasi-phase-matched (QPM) devices. Additionally due to its large Electro-Optic(E-O) and Acousto-Optic(A-O) coefficients, LiNbO3 crystal is the most commonly used material for Pockel Cells, Q-switches and phase modulators, waveguide substrate, and surface acoustic wave(SAW) wafers, etc. CASTECH can provide LiNbO3 crystals with high quality and large size for all these applications.
Structure and Physical Properties of LiNbO3
| Crystal Structure | Trigonal, Space group R3c, Point group 3m |
| Cell parameters | a=5.148 Å , c=13.863 Å |
| Melting Point | 1253℃ |
| Curie Temperature | 1140℃ |
| Mohs Hardness | 5 |
| Density | 4.64g/cm3 |
| Elastic Stiffness Coefficient |
CE11 =2.33(×1011N/m2 ) CE33 =2.77(×1011N/m2 ) |
Optical and Electro-optical Properties of LiNbO3
| Transparency Range | 420-5200nm |
| Optical Homogeneity | ～5×10-5/cm |
| Refractive indices at 1064nm |
ne = 2.146, no = 2.220 @ 1300 nm ne = 2.156, no = 2.232 @ 1064 nm ne = 2.203, no = 2.286 @ 632.8 nm |
| NLO Coefficients |
d33 = 86 x d36 (KDP) d31 =11.6 x d36 (KDP) d22 = 5.6 x d36 (KDP) |
| Electro-optical Coefficients |
γT33 = 32 pm/V, γS33 = 31 pm/V γT31 =10 pm/V, γS31=8.6 pm/V γT22 = 6.8 pm/V, γS22= 3.4 pm/V |
|
Half-Wave Voltage,DC Electrical field∥z,light⊥z: Electrical field∥x or y,light∥z: |
3.03 KV 4.02 KV |
| Damage Threshold | 100 MW/cm2 (10 ns, 1064nm) |
Thermal and Electrical Properties of LiNbO3
| Melting Point | 1250 ℃ |
| Curie Temperature | 1140 ℃ |
| Thermal Conductivity Coefficient | 38W/m/K @25 ℃ |
| Thermal Expansion Coefficients(at 25℃) |
//a, 2.0×10-6/K //c, 2.2×10-6/K |
| Resistivity | 2×10-6 Ω·cm @200 ℃ |
| Dielectric Constant |
εS11/ε0 =43 εT11/ε0=78 εS33/ε0 =28 εT33/ε0= 32 |
| Piezoelectric Strain Constant |
D22=2.04(×10-11C/N ) D33=19.22 (×10-11 C/N ) |
The Sellmeier Equations (λ in μm):
no2=4.9048+0.11768/(λ2-0.04750)-0.027169λ2
ne2=4.5820+0.099169/(λ2-0.04443)-0.02195λ2
Specification
- Transmitting wavefront distortion: ＜ λ/4 @633 nm
- Dimension tolerance: (W ± 0.1 mm) × (H ± 0.1 mm) × (L ± 0.2mm)
- Clear aperture:> 90% central area
- Flatness: λ/8 @633 nm
- Scratch/Dig code: 20/10 to MIL-PRF-13830B
- Parallelism: ＜ 20 arc seconds
- Perpendicularity: 5 arc minutes
- Angle tolerance: <± 0.5°
- AR coating: dual wave band AR coating at 1064/532 nm on both surfaces, with R <0.2% at 1064 nm and R <0.5% at 532nm per surface.
*Other coatings are available upon request.
Packing Details :Use Good and Strong Cartons to pack
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FAQ
Q: What are your main products?
A: Optical lens,mirrors,windows,filters,prisms
Q: How long is your delivery time?
A: In general delivery time is about one month for custom produced optics.except stock ones or some special optics.
Q: Do you provide samples ? is it free or extra ?
A: We can provide free samples if we have stock optics as your request,while custom produced samples are not free.
Q:What is your MOQ ?
MOQ is 10pcs for most of the optics, while MOQ could be only one piece if you need a element in big dimention.
Q: What is your terms of payment ?
T/T,L/C,VISA,Paypal,Alipay or Negotiation.
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