|
Properties
|
Parameter
unit
|
Values
|
|
Crystal dimensions,
Length
Diameter
|
mm
|
100
25
|
|
Syngony
|
|
Rhombic
|
|
Unit
sell parameters
|
Å
|
a
= 4.77
b
= 10.28
c
= 6.00
|
Refraction
indexes
|
|
Ng
= 1.670
Nm
= 1.651
Np = 1.635
|
|
Density
|
g/cm3
|
3.217
|
|
Mohs
hardness
|
|
7
|
|
Axial
characteristics
|
|
Biaxial
|
|
Melting
point
|
oC
|
1895
|
Density
of energy
|
J/cm2
|
2
|
|
Absorption
cross section
|
cm2
|
1.88
´ 1018
|
|
Thermal
expansion coefficient
|
|
9.5
´ 10-6
|
|
Thermal
conductivity
|
W/cmoK
|
0.08
(300oK)
|
|
Relaxing
time of laser oscillation
|
psec
|
<10
|
|
Stimulated
emission cross section
|
cm2
|
1.44
´ 10-19
|
|
Spontaneous
fluorescence
|
sec
|
2.7
´ 10-6
|
|
Optical
loss at l= 1230 nm
|
cm-1
|
0.005
- 0.06
|
|
Absorption
coefficient at wavelength of 1064 nm
|
cm-1
|
0.7
– 3.0
|
|
Tuning
range
|
nm
|
1140
– 1345
|
|
Lazing
wavelength (center)
|
nm
|
1235
(pulse mode)
1244
(CW mode)
|
|
Cr4+
concentration
|
at%
|
0.05
– 0.5
|
|
Room-temperature
Fluorescence lifetime
|
sec ´ 10-6
|
apr. 1.2.7
|
|
Gain
cross-section
|
cm2
|
apr. 1.45 ´ 10-19
|
Laser
rod diameter
|
mm
|
4
–10
|
|
Laser
rod length
|
mm
|
5
- 80
|
|
End
face flatness
|
|
l/10 wave across 80% of aperture
|
|
Surface
roughness
|
|
l/10
|
|
Perpendicularity
|
|
within
5 arc minutes
|
|
Parallelism
|
|
15
arc seconds or less
|
|
Surface
finish
|
Scratch-dig
|
10
- 5
|
