Flat-parallel windows and substrates
Main features
- Excellent thermall conductivity
- Large gain bandwidth
- Wide range of possible pump wavelengths (typically 532 nm)
Application examples
- Mode-locked lasers with ultrashort pulses
- Multi-pass amplifiers and regenerative amplifiers
Request custom
DOWNLOAD PRODUCT SHEET
- Description
- Specifications
- Properties
- Test
Titanium-doped sapphire (Ti3+:Al2O3) is a widely used transition-metal-doped ultrashortsolidstate lasers. The Ti3+ ion has a very large gain bandwidth, that open possibility to obtain very wide wavelength tunability resulted in short laser pulses. To obtain crystals with good quality the the Ti3+ doping concentration should not exceed 0,25 at.%. Thus the crystals with thickness of several millimeters have to be used. The crystal is characterized by the short upper-state lifetime and high the saturation power. All these facts lead to necessity of strongly focused pump beam usage.
| Laser related spectroscopic and thermo-mechanical properties | |
|---|---|
| Face dimensions tolerance | +0/-0,1 mm |
| Length tolerance | ±0,1 mm |
| Orientation accuracy | <30 arcmin |
| Parallelism error | <20 arcsec |
| Perpendicularity error | <5 arcmin |
| Protective chamfers | <0,1 mm at 45° |
| Surface quality | 10-5 S-D |
| Surface flatness | <λ/8 at 632,8 nm |
| Wavefront distortion | <λ/8 at 632,8 nm |
| Laser induced damage threshold | >500 MW/cm2 @ 1064 nm, 10 ns |
| Mount | Unmounted |
| Clear aperture | >90%
|
| Laser related spectroscopic and thermo-mechanical properties of Yb:KGW laser crystal | |
|---|---|
| Absorption peak wavelength | 980 nm |
| Absorption cross-section at peak wavelength | 12 x 10-20 cm2 (E || Nm) |
| Laser wavelength | 1025 (1020-1060) nm |
| Lifetime of 2F5/2 ytterbium energy level | 240 μs |
| Emission cross-section at 1030 nm | 3 x 10-20 cm2 (E || Nm) |
| Refractive index at 800 nm | ng = 2,037
np = 1,986 nm = 2,033 |
| Crystal structure | monoclinic |
| Density | 7,25 g/cm3 |
| Mohs hardness | 4-5 |
| Thermal conductivity | Ka = 2,6 Wm-1 K-1
Kb = 3,8 Wm-1 K-1 Kc = 3,4 Wm-1 K-1 |
| dn/dT | dnp/dT = -15,7 x 10-6 K-1
dnm/dT = -11,8 x 10-6 K-1 dng/dT = -17,3 x 10-6 K-1 |
| Thermal expansion coefficient | αp = 1,7 x 10-6 K-1
αm = 11,01 x 10-6 K-1 αg = 17,37 x 10-6 K-1 |
| Typical doping level, at. % | <5% |
| Laser related spectroscopic and thermo-mechanical properties of Yb:KYW laser crystal | |
|---|---|
| Absorption peak wavelength | 980 nm |
| Absorption cross-section at peak wavelength | 14 x 10-20 cm2 (E || Nm) |
| Laser wavelength | 1020 (1020-1050) nm |
| Lifetime of 2F5/2 ytterbium energy level | 230 μs |
| Emission cross-section at 1030 nm | 2,5 x 10-20 cm2 (E || Nm) |
| Refractive index at 800 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-1 K-1
|
| dn/dT | dnp/dT = -13,08 x 10-6 K-1
dnm/dT = -7,61 x 10-6 K-1 dng/dT = -11,83 x 10-6 K-1 |
| Thermal expansion coefficient | αp = 1,9 x 10-6 K-1
αm = 10,3 x 10-6 K-1 αg = 16,5 x 10-6 K-1 |
| Typical doping level, at. % | <10% |
| Flat-parallel windows and substrates specifications | |
|---|---|
| Material | BK7 and UVFS |
| Clear aperture | >85% |
| Face dimensions tolerance | +0/-0,15 |
| Thickness tolerance | ±0,25 mm |
| Parallelism error | <30 arcsec |
| Protective chamfers | Diameter ≤ 50,8 mm: <0,35 mm at 45°
Diameter > 50,8 mm: <0,50 mm at 45° |
| Coatings | Uncoated |
| Surface quality | Diameter ≤ 25,4 mm: 10-5 S-D
Diameter > 25,4 mm: 20-10 S-D |
| Surface flatness | Diameter ≤ 25,4 mm: <λ/8 at 632,8 nm
Diameter > 25,4 mm: <λ/5 at 632,8 nm |
Order your item
SKU
Material
Size, mm
Center thickness, mm
Edge thickness, mm
Focal length, mm
Delivery
price
quantity
10615
BK7
⌀ 25,4
3,3
AR@1064 nm+AR@808 nm
125
Request
100 €
1234
BK7
⌀ 25,4
3,3
2
125
3 days
Request
3543
UVFS
⌀ 25,4
3,5
4,5
-200
3 months
150 €
3555
UVFS
⌀ 25,4
4
2,2
100
1 week
65 €
45
BK7
⌀ 25,4
4
4,2
-1000
1-3 days
Request
1
