LiNbO3 アイソレータ、サーキューレータ用結晶
LiNbO3 crystal combines low cost, good mechanical and physical properties as well as high optical homogeneity.
Therefore, LiNbO3 wedges have been widely used in fiber Isolators and Circulators.
CASTECH provides
- 50,000 to 100,000 pcs/month of LiNbO3 wedges used for fiber optical isolators and circulators
- Reliable Delivery;
- Strict quality control;
- Technical support;
- Very competitive price
Basic Properties of LiNbO3
| Crystal Structure: | Trigonal, Space group R3c, Point group 3m |
| Melting Point: | 1253℃ |
| Mohs Hardness: | 5 |
| Density: | 4.64 g/cm3 |
| Deliquescence | None |
| Optical Homogeneity | ～5x10-5/cm |
| Transparency Range | 420nm-5200nm |
| Absorption Coefficient: | ～0.1%/cm @1064nm |
| 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 |
| Thermal Expansion Coefficients ( at 25℃) | //a, 2.0x10-6/K //c, 2.2x10-6/K |
| Thermal Conductivity Coefficient: | 38 W/m/K at 25℃ |
| Thermal Optical Coefficient: | dno/dT=-0.874x10-6/K at 1.4µm dne/dT=39.073x10-6/K at 1.4µm |
| The Sellmeier equations (λ in µm) | no 2 = 4.9048 + 0.11768/(λ2-0.04750) -0.027169λ2 ne 2 = 4.5820 + 0.099169/(λ2-0.04443) -0.02195λ2 |
Specifications of LiNbO3 wedges
| Aperture | 1.0 × 1.0 mm2 to 4 × 4 mm2 |
| Dimension tolerance | ±0.05mm |
| Wedge Angle tolerance | ±0.1° |
| Optical axis orientation | ±0.5° |
| Flatness | λ/4 @ 632.8 nm |
| Surface Quality | 20-10 |
| AR-coating | R<0.2% @1550nm±40nm |
| Standard Size | 1.25mmx1.25mmx0.5mm with 13° or 15° wedge, phi=22.5° |
カタログ ダウンロード
CASTECH社の製品一覧へ戻る