| La2Be2O5:Nd3+
single crystals are highly effective material for solid-state lasers
oscillating at wavelength 1.07-1.08mm. Energetic characteristics of lanthanum berillate laser are twice greater then for yttrium-aluminum garnet YAG (Y3Al5O12:Nd3+)
laser and not inferior of GSGG (Gd3Se2Ga3O12:Cr3+,Nd3+)
laser. It operates well in picosecond pulse
mode at a pulse duration 3-5 psec with an
efficiency several times higher than YAG efficiency. |
| |
MATRIX PROPERTIES
|
Mean dislocation density, cm-2
|
100
|
Molecular weight
|
375.82
|
|
Syngony
|
monoclinic
|
|
Symmetry
class
|
2m-c2k6
|
|
Spatial
group
|
C2/C1
|
|
Crystal
lattice parameters,
Angström unit
(Œ)
|
a = 7.5356
b = 7.3476
c = 7.4387
|
|
Density,
g/cm3
|
6.061
|
|
|
|
|
Melting
point, oC
|
1361
|
|
Axial
characteristics
|
biaxial
|
|
Refraction
indexes
|
nx = 1.9641
ny = 1.9974
nz = 2.0348
|
|
Mohs hardness
|
6.5
|
|
|
|
Nd3+
concentration, at %
|
1-5
|
|
Oscillation
wavelength
|
1.07 –
1.08
|
|
Transition
cross-section, cm-2
|
1.5 ´ 10-19
|
|
Absorption
loss on l = 1060nm, cm-1
|
|
|
Oscillation
boundaries depending on Nd3+ concentration
and orientation, J (laser threshold as a function of Nd3+
concentration and orientation, J)
|
3-12
|
|
|
RODS SPECIFICATION
|
|
1. Rods
with round cross-sections are manufactured
|
|
2. Sizes
and processing:
Diameter
tolerance
Length
tolerance
End faces
parallelism
Surface
quality
Flatness
Orientation
tolerance
|
+/-0.1mm
+/-0.5mm
10”
10-5 scratch-dig
l/10
> 5o
|
|
3. Rod’s
orientation
Diameter
Length
|
x,y,z
4 –12mm
50-100mm
|
|
