Yb:KYW crystals
Main features
- Large gain bandwidth
- High emission cross-sections
- Small quantum defect
- High doping level
- High enough thermal conductivity
- Custom crystals available upon request
Application examples
- Femtosecond lasers and regenerative amplifiers
- CW and passively mode-locked thin-disk lasers
Request custom
View stock
- Description
- Properties
- Absorption and emission curves
- Standard specifications
Yb3+:KYW crystals possess a large gain bandwidth that enables them to obtain <100 fs pulse duration in the mode-locked regime of operation. Compared with other ytterbium-doped gain media with a similarly large gain bandwidth, ytterbium-doped tungstates have fairly high emission cross-sections. The ytterbium doping concentration in Yb:KYW crystals can be very high without a significant quenching. Thermal conductivity of common double tungstates is in the range of 3–4 Wm-1K-1. Yb:KYW crystals also feature a small quantum defect.
| Spectroscopic and thermo-mechanical properties | |
|---|---|
| Absorption peak wavelength | 980 nm |
| Absorption cross-section at peak wavelength | 14 × 10-20 cm2 (E||Nm) |
| Absorption bandwidth at peak wavelength | ~3 nm |
| Laser wavelength | 1020 (1020-1050) nm |
| Lifetime of 2F5/2 ytterbium energy level | 230 μs |
| Emission cross-section at 1030 nm | 2,5 × 10-20 cm2 (E||Nm) |
| Refractive index at 1064 nm | ng= 2,037 np= 1,986 nm= 2,033 |
| Crystal structure | Monoclinic |
| Density | 6,61 g/cm3 |
| Mohs hardness | 4-5 |
| Thermal conductivity | ~3,3 Wm-1K-1 |
| dn/dT | dnp/dT = -13,08 × 10-6 K-1 dnm/dT = -7,61 × 10-6 K-1 dng/dT = -11,83 × 10-6 K-1 |
| Thermal expansion coefficient | αp= 1,9 × 10-6 K-1 αm= 10,3 × 10-6 K-1 αg= 16,5 × 10-6 K-1 |
| Typical doping level | 1-100 at. % |
| Yb:KYW crystals | |
|---|---|
| Orientation | Ng-cut; Np(b)-cut and other orientation available |
| 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%)@970-1070 nm |
| Laser-induced damage threshold | >10 J/cm2@1040 nm, 10 ns |
| Mount | Uncoated |
Order your item
Face dimensions
Length
End faces
Orientation
Doping
Coatings
SKU
PRICE
QUANTITY
3x3 mm
5 mm
Right-angle cut
Ng-cut
2%
AR/AR@970-1070 nm
7035
Request
5x5 mm
5 mm
Right-angle cut
Ng-cut
2%
AR/AR@970-1070 nm
7036
Request
3x3 mm
5 mm
Brewster-angle cut
Ng-cut
2%
uncoated
7037
Request
5x5 mm
5 mm
Brewster-angle cut
Ng-cut
2%
uncoated
7038
Request
3x3 mm
2 mm
Brewster-angle cut
Ng-cut
5%
uncoated
7039
Request
5x5 mm
2 mm
Right-angle cut
Ng-cut
5%
AR/AR@970-1070 nm
7040
Request
3x3 mm
2 mm
Right-angle cut
Ng-cut
5%
AR/AR@970-1070 nm
7041
Request
5x5 mm
2 mm
Brewster-angle cut
Ng-cut
5%
uncoated
7042
Request
3x3 mm
1 mm
Right-angle cut
Ng-cut
10%
AR/AR@970-1070 nm
7043
Request
5x5 mm
1 mm
Right-angle cut
Ng-cut
10%
AR/AR@970-1070 nm
7044
Request
3x3 mm
1 mm
Brewster-angle cut
Ng-cut
10%
uncoated
7045
Request
5x5 mm
1 mm
Brewster-angle cut
Ng-cut
10%
uncoated
7046
Request
1
/1
Show all
