Er:YLF(Erbium-doped yttrium lithium fluoride) – Laser Crystal – Gain Medium – Customized Products
Er:YLF crystal products, also known as erbium-doped yttrium fluoride lithium crystal. It is a kind of crystal product with excellent comprehensive performance. It is widely used in industrial, medical and scientific research fields. The product has the characteristics of low nonlinear refractive index, low phonon frequency and long life laser emission level. It can be used in 2940nm erbium laser, 3 μm laser Q switch, upconversion visible light laser, laser ranging products.
Note:
$100 is a deposit, not the final price of the product. Please contact us for price if needed.
Features
Low phonon frequency
Negative thermal light coefficient
Long laser emission energy level life
Wide range of transparency (from VUV to 10 μm region)
Standard
Orientation | A-cut |
Parallelism | <10〞 |
Perpendicularity | <10ˊ |
Surface Quality | 10-5 S-D |
Wavefront Aberration | <λ/4 per inch@632.8 nm |
Flatness | <λ/10 @632.8 nm |
Clear Aperture | >90% |
Face Dimension Tolerance | +0.0/-0.1 mm |
Length Tolerance | ±0.1mm |
Chamfer | <0.1mm@45° |
Physical and Chemical Properties
Structural Symmetry | Quartet |
Lattice Constant | a=5.173, c=10.747 Å@1.5% |
Density | 3.95g/cm3 |
Melting Point | 819°C |
Thermal Conductivity/(W·m-1·K-1) | ~5 |
Specific Heat(J·g-1·K-1) | 0.79 |
Thermal Expansion/(10-6·K-1 ) | 8 |
Hardness (kg/mm2@Mohs) | 5 |
Young’s Modulus/(108g/cm2) | 7.65 |
Optical Properties
Typical Doping Levels | 15% |
Refractive Index(@2070nm) | n0=1.442, ne=1.464 |
Thermal Coefficient of Light(10-6·K-1) | -2(∥a), -4.1(∥c) |
4I11/2Er Level Lifetime(ms) | 4 |
Emission Cross Section(10-20/cm2) | 1.5@2800nm |
Absorption Peak Wavelength | 972nm |
Absorption Coefficient of Peak Wavelength | 28cm-1 |
Absorption Bandwidth of Peak Wavelength | ~1nm |
Laser Wavelength | 2810nm |