Laser Crystals --------- Nd:YAP
YAlO3 perovskite (YAP) is a well known host for solid state lasers. The crystal
anisotropy of YAP offers numerous advantages. It permits a small tuning of wavelength
by varying the wave vector direction in the crystal. Furthermore, the output beam is
linearly polarized.
|
Chemical formula |
YAlO3:Nd3+ |
|
Lattice constants, A |
a=5,176, b=5,307, c=7,355 |
|
Growth |
Czochralski |
|
Density, g/cm3 |
5.35 |
|
Melting point, °C |
1870 |
|
Mohs Hardness: |
7 |
|
Heat expansion index |
9,5 x 10-6 K-1 (a axis) |
|
4,3 x 10-6 K-1 (b axis) |
|
10,8 x 10-6 K-1 (c axis) |
|
Thermal conductivity, W/( °C x cm) |
0,11 W/(cm K) |
|
Refractive index |
na=1,929, nb=1,943, nc=1,952 |
|
Specific heat, J/(g x °C) |
0.4 |
|
Standard specification |
|
Dopant concentration, at.% |
1.0(±0.1)at% |
|
Diametre |
Φ6mm |
|
Length |
1~50mm |
|
Surface roughness |
10~5 |
|
Flatness of plane surface |
λ/4 |
|
Parallelism |
30 ” |
|
Reflectivity of AR coating |
R<0.25% at 1064 nm |
|
Scatter losses |
< 0.2 %/cm |
ORDER
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