Yb:YAG crystal, also known as Ytterbium-doped yttrium aluminum garnet is used in production of short and ultrashort pulse lasers. Wide absorption bandwidth centered at 940 nm makes it well suited to be pumped with laser diodes. High thermal conductivity of Yb:YAG crystal makes it a perfect gain material for high power lasers.
Yb:YAG crystals available from stock
Description
Yb-doped yttrium aluminum garnet (Yb:YAG) crystal is used in production of short and ultrashort pulse lasers. Wide absorption bandwidth centered at 940 nm makes it well suited to be pumped with laser diodes. High thermal conductivity of Yb:YAG crystal makes it a perfect gain material for high power lasers1. Due to its cubic structure the crystal shows homogeneous performance when light goes along [111] cut orientation. 1030 nm emission wavelength is widely used in the photonics field, but also its second harmonic (515 nm with BBO or LBO crystal) could be efficiently used to pump other crystals like Ti:Sapphire, or even replace the argon ion laser in medical applications.
Specifications
Physical and Thermal Properties
| Chemical formula | Yb:Y3Al5O12 (Yb-doped yttrium aluminum garnet) |
| Possible dopant concentrations | 0.5 – 15 at. % |
| Crystal structure | cubic |
| Lattice constants | a = 12.01 Å |
| Density | 4.56 g/cm3 |
| Mohs hardness | 8.5 |
| Melting point | 1970 °C |
| Refractive index (at 1064 nm) | n = 1.8147 |
| Thermal conductivity | K = 11.2 W/(mxK) |
| Specific heat | C = 0.59 J/(gxK) |
| Termal expansion coefficients | α[111] = 7.8 x 10-6 °C-1 |
| dn/dT | 7.3 × 10-6 °C-1 |
Spectroscopic Properties
| Absorption peak wavelength | 940 nm |
| Absorption cross-section at peak wavelength | 7.7 × 10-20 cm2 |
| Absorption bandwidth (FWHM) | 8 nm |
| Emission wavelength | 1025 – 1035 nm |
| Emission cross-section at 1030 nm | 2.1 × 10-20 cm2 |
| Fluorescence lifetime | 1.2 ms |
Standard Manufacturing Specifications
| Cut orientation error: | +/- 30 arcmin |
| Dimensions tolerance: | +/- 0.1 mm |
| Clear aperture: | > 85% of aperture dimensions |
| Surface quality: | 10-5 S-D |
| Surface flatness: | < λ/10 @ 633 nm |
| Parallelism error: | < 20 arcsec |
| Perpendicularity error: | +/- 5 arcmin |
Standard Products
Product | Doping | Orientation | Dimensions | Length | Wedge | Coatings | Price | Delivery | Quantity | |
|---|---|---|---|---|---|---|---|---|---|---|
| Yb-YAG-7-D1x5 | 7 at.% | [111] | Ø 1 mm | 5 mm | < 20 arcsec | AR/AR 940+1030 nm | 230.00€ | from stock | | |
| Yb-YAG-10-D1x5 | 10 at.% | [111] | Ø 1 mm | 5 mm | < 20 arcsec | AR/AR 940+1030 nm | 230.00€ | from stock | | |
| Yb-YAG-10-5x5x2.5-HT-HR | 10 at.% | [111] | 5 x 5 mm | 2.5 mm | < 30 arcsec | HR1020-1060 HT880-940 / PR1020-1060 HT880-940 nm | 470.00€ | from stock | | |
| Yb-YAG-5-5x5x3-AR | 5 at.% | [111] | 5 x 5 mm | 3 mm | < 30 arcsec | AR/AR 940+1030 nm | 482.00€ | 2 weeks | | |
| Yb-YAG-5-4x4x10-AR | 5 at.% | [111] | 4 x 4 mm | 10 mm | 2° | AR/AR 969-1030 nm | 510.00€ | 2 weeks | | |
| Yb-YAG-2-D2x30-AR | 2 at.% | [111] | Ø 2 mm | 30 mm | < 20 arcsec | AR/AR 940+1030 nm | 580.00€ | 2 weeks | | |
| Yb-YAG-3-3x3x25-AR | 3 at.% | [111] | 3 x 3 mm | 25 mm | < 20 arcsec | AR/AR 940+1030 nm | 590.00€ | 2 weeks | | |
| Yb-YAG-1-D1x40-AR | 1 at.% | [111] | Ø 1 mm | 40 mm | < 20 arcsec | AR/AR 940+1030 nm | 1080.00€ | 6-8 weeks | | |
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