Nd:LSB crystals
| Chemical formula | LaSc3(BO3)4:Nd |
| Dopant | Neodymium |
| Nd concentration, cm-3 | up to 10.2´ 1020 |
| Spatial group | C2h6 |
| Lattice parameters: a,b,c (E) b - degrees |
a=7.727 b=9.840 c=12.046 b =105.42 |
| Melting point, 0C | 1600 |
| Density, g/cm3 | 3.68 |
| Hardness, Mohs | >7 |
| Heat expansion coefficient, 0C-1 | 12.3´ 10-6 |
| Thermoconductivity, W· cm-1· 0C-1 | 0.028 |
| Thermo-optical constant, dn/dT (l =0.63 mkm)0C-1 | 4.4´ 10-6 |
| Transparent region, mkm | 0.25-3.0 |
| Refractive index at l =1.0 mkm | nx=1.8280 ny=1.8272 nz=1.7486 |
| Laser channel | 4F3/2® 4I11/2 |
| Generation wavelength, mkm | 1.0625 |
| Emission cross-section, E ï ï x (cm2) | 1.3´ 10-19 |
| Life time, E ï ï x (mksec) | 118 |
| Absorption coefficient, E ï ï x (cm-1) | 36 |
| FWHMabs, E ï ï x (nm) | 3 |
| FWHMem, E ï ï x (nm) | 4 |
| Saturation intensity, E ï ï x S0=hw /s emt , W· cm2 | 12´ 103 |
| Polarisation of stimulated emission | linear,1000:1 |
| Form and size of elements, mm -cylinder -plate |
Æ (3-5)´ (1-3) (3-5)´ (3-5)´ (1-3) |
Spectroscopic Comparison Data
Laser crystal |
Nd per cm-3 |
Absorp. Coef. cm-1 |
FWHMabs nm |
Lifetime t (mksec) |
Emission cross-section s e(» 1064 nm)cm2 |
FWHMem nm |
Saturation intensity S0=hw /semt W· cm2 |
YAG:Nd |
1.5·1020 |
10 |
0.8 |
240 |
3.3· 10-19 |
0.5 |
2.4· 103 |
YVO4:Nd E | | z |
1.5· 1020 |
40 |
2 |
97 |
9.8· 10-19 |
1 |
2.0· 103 |
LSB:Nd E | | x |
5.1· 1020 |
36 |
3 |
118 |
1.3· 10-19 |
4 |
12· 103 |
There is no temperature displacement of the luminescence band up to 200ºC for Nd:LSB so it can be used in pair with KTP crystal for intracavity.
Nd:LSB STANDARD SPECIFICATIONS
- Axis of the crystal is orientated to maximum absorption of pumping @ 808 nm.
- Tolerances: diameter +/- 0.01 mm, length +/-0.01 mm
- Parallelism <10"
- Perpendicularity <10'
- Surface quality <20/10
Active element dimensions and Nd concentration in range 5-50%at. may be tailored according to customer's requirements.
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