Yb:YAG crystal is a promising solid state laser working material, which is more suitable for diode pumping with traditional Nd doped crystal medium. Compared with Nd:YAG crystals, Yb:YAG crystals have wider absorption bandwidth, lower thermal control requirements in semiconductor laser design, longer laser upper level lifetime, and 3-4 times lower thermal load per unit of pump power.
Main features:
♦ Good optical quality, high slope efficiency
♦ Wide absorption bandwidth (8 nm @940 nm)
♦ No excited state absorption or upconversion in the upper energy level of the laser
♦ High thermal conductivity and high mechanical strength
♦ Can be easily pumped with InGaAs diodes
Typical applications:
♦ Diode Pumped Laser Systems
♦ Can be used for laser cutting and welding, laser marking machines
♦ Multiphoton microscopy, ultrashort pulse research
♦ Holography, interference, optical storage and other fields
♦ Can be used for material micromachining
♦ The field of dental treatment
Absorption and emission curves of Yb:YAG
Technical Parameters
Argument Name | Values and Ranges |
Size tolerance | Diameter: +0.00"/-0.002"mm, Length: ± 0.02" mm |
Clear aperture | > 95% |
Finish | 10/5 |
Flatness | λ/10@633nm |
Wavefront distortion | λ/4@633nm |
Parallelism | ≤ 10 acr sec |
Perpendicularity | ≤ 5 arc min |
Doping concentration | Yb: 5~15 at% |
Anti-reflection membrane system | ≤ 0.25% (@1030nm) |
| Quality warranty period | 1 year (with normal use) |
Crystal Structure and Physical Properties
Argument Name | Values and Ranges |
Chamfering | 2F5/2→2F7/2 |
Laser wavelength | 1030 nm |
Photon energy | 1.93 × 10-19 J(@ 1030nm) |
Emission spectral width | 9 nm |
Launch cross-section | 2.0 × 10-20 cm2 |
Fluorescence lifetime | 1.2 ms |
Diode pump width | 940 nm or 970 nm |
Diode pump width | 8 nm |
Refractive index | 1.82 |
Thermal light coefficient | 9 × 10-6/°C |
| Loss coefficient | 0.003 cm-1 |
Standard Size
| Product NO. | Diameter (mm) | Length (mm) | Doping% | Coating |
| Y-Y-501 | 5 | 2 | 5.0% | AR/AR@940 nm+1030 nm |
| Y-Y-502 | 5 | 3 | 5.0% | AR/AR@940 nm+1030 nm |
| Y-Y-503 | 5 | 1 | 10.0% | AR/AR@940 nm+1030 nm |
| Y-Y-504 | 5 | 2 | 10 | AR/AR@940 nm+1030 nm |
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