Yb:YLF crystals
Main features
- Simple electronic structure excludes excited-state absorption and also a variety of detrimental quenching processes
- Broad and smooth emission spectrum
- Wide tunning range
- Absorption spectra are well matched with the emission wavelength of InGaAs laser diodes
- Low quantum defect
- Custom crystals available upon request
Application examples
- Diode-pumped mode-locked lasers
- Thin-disk lasers
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- Description
- Properties
- Absorption and emission curves
- Standard specifications
Yb3+:YLF features a wide emission cross-section, with a peak value at the lasing wavelength comparable to that found in Yb3+:Sr3Y(BO3)3 and
Yb3+:Ca4GdO(BO3)3 laser crystals. Also, the YLF crystal is favorable when high ytterbium ion dopant concentrations are desired.
| Spectroscopic and thermo-mechanical properties | |
|---|---|
| Absorption peak wavelength | 960 nm |
| Absorption cross-section at peak | 10,5 × 10-21 cm2 |
| Absorption bandwidth at peak wavelength | ~10 nm |
| Laser wavelength | 1017 nm |
| Lifetime of 2F5/2 energy level | 2,1 ms |
| Emission cross-section @1053 nm | 4,1 × 10-21 cm2 |
| Refractive index @1040nm | ~1,4 |
| Crystal structure | Tetragonal |
| Density | 3,95 g/cm3 |
| Mohs hardness | 5 |
| Thermal conductivity | 6 Wm-1K-1 |
| dn/dT | -4,6 × 10-6 (//c) K-1, -6,6 × 10-6 (//a) K-1 |
| Thermal expansion coefficient | 8 × 10-6 (//c) K-1, 13 × 10-6 (//a) K-1 |
| Typical doping level | 5-20 at.% |
| Yb:YLF crystals | |
|---|---|
| Orientation | a-cut |
| Clear aperture | >90% |
| Face dimensions tolerance | +0,0/-0,1 mm |
| Length tolerance | ±0,1 mm |
| Parallelism error | <10 arcsec |
| Perpendicularity error | <10 arcmin |
| Protective chamfers | <0,1 mm at 45˚ |
| Surface quality | 10-5 S-D |
| Surface flatness | <λ/10@632,8 nm |
| Coatings | AR(R<0,5%)@960 nm + AR(R< 0,2%) @1000-1060 nm on both faces |
| Laser-induced damage threshold | >10 J/cm2@1030 nm, 10 ns |
| Mount | Unmounted |
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Face dimensions
Length
End faces
Doping
Coatings
SKU
PRICE
QUANTITY
3x3 mm
8 mm
Right angle cut
5%
AR/AR@960 nm+1000-1060 nm
7828
590 €
3x3 mm
8 mm
Brewster cut
5%
uncoated
7829
540 €
⌀8 mm
8 mm
Right angle cut
5%
AR/AR@960 nm+1000-1060 nm
7830
680 €
3x3 mm
4 mm
Right angle cut
10%
AR/AR@960 nm+1000-1060 nm
7831
590 €
3x3 mm
4 mm
Brewster cut
10%
uncoated
7832
540 €
⌀8 mm
4 mm
Right angle cut
10%
AR/AR@960 nm+1000-1060 nm
7833
680 €
3x3 mm
2 mm
Right angle cut
20%
AR/AR@960 nm+1000-1060 nm
7834
590 €
3x3 mm
2 mm
Brewster cut
20%
uncoated
7835
540 €
⌀8 mm
2 mm
Right angle cut
20%
AR/AR@960 nm+1000-1060 nm
7836
680 €
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