Er, Yb:YAB
Erbium- and ytterbium-codoped yttrium aluminum borate, also called Er,Yb:YAB, is a laser crystal with excellent overall performance. It is widely used in telecommunications systems, radar monitoring, and laser applications. It offers high thermal conductivity, large absorption and emission cross sections, and a broad absorption bandwidth. It can be used in ultrashort mode-locked lasers, lidar, passively Q-switched lasers, and eye-safe lasers at 1.5-1.6 μm.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Absorption peak wavelength | 976 nm |
| Absorption bandwidth at peak wavelength | 17 nm |
| Laser Wavelength | 1522, 1531, 1543, 1550, 1602 nm |
| Lifetime of the erbium ⁴I₁₃/₂ level | 0.32 ms |
| Yb-to-Er energy transfer efficiency | >90 % |
| Refractive Index [@632.8 nm] | nₒ=1.7757, nₑ=1.7015 |
| Crystal Structure | Trigonal |
| Density | 3.84 g/cm³ |
| Mohs hardness | 7.5 |
| Thermal conductivity | 7.7 (//a), 6 (//c) Wm⁻¹K⁻¹ |
| Coefficient of thermal expansion | 2×10⁻⁶ (//a), 9.5×10⁻⁶ (//c) K⁻¹ |
| Typical doping specification | 1-2 at.% [Er] 8-15 at.% [Yb] |
| Orientation | c-cut |
| Clear Aperture Dimension | >90% |
| Face dimension tolerance | +0,0/-0,1 mm |
| Length Tolerance | ±0,1 mm |
| Parallelism error | <10 arcsec |
| Perpendicularity error | <10 arcmin |
| Protective chamfer [@45˚] | <0,15 mm @ 45˚ |
| Surface Quality | 10-5 S-D |
| Flatness [@632.8 nm] | <λ/10@632.8 nm |
| Coating [@(R<1%) @940 nm + AR(R<0,25%)@1480-1600 nm] | Ar@(R<1%) @940 nm + AR(R<0,25%)@1480-1600 nm |
| Laser Damage threshold [@1550 nm, 10 ns] | >10 J/cm²@1550 nm, 10 ns |
Key Features
Datasheet
Supplier Information
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