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Neodymium Doped
Yttrium Orthvanadate (Nd:YVO4) is one of the most efficient laser
host crystal currently existing for diode laser-pumped solid-state
lasers. Its large stimulated emission cross-section at lasing wavelength,
high absorption coefficient and wide absorption bandwidth at purrip
wavelcngth, high lnscr induced darraye threshold as well as good physical9
optical and mechanical properties make Nd:YVO4 an excellent crysta
for the high power, stable and cost-effective diode lasenpumped solid-state
tasers. Recent developments have shown that Nd:YVO4 micro-lasers can
produce powerful and stable IR and green or red lasers with the design
of Nd:YVO4 + KTP.
(in order to view symbols correctly, IE 4.0 or above is
highly recommanded.)
Optical Properties:
| Lasing
Wavelength : |
1064nm, 1342nm |
| Refractive Indices: |
@1064nm |
1.9573(no) |
2.1652(ne)
|
| @808nm |
1.9721(no) |
2.1858(ne) |
| @532nm |
2.0210(no) |
2.2560(ne) |
| Sellmeier
Equations: (Pure YVO4,l in µm) |
no2 = 3.77834
+ 0.069736 / (l2 - 0.04724) - 0.0108133l2
|
ne2 = 4.59905 + 0.110534 / (l2
- 0.04813) - 0.0122676l2 |
| Therm-Optic
Coefficient:(10-6/K) |
dna/dT=8.5
|
dnb/dT=8.5 |
dnc/dT=3.0 |
| Absorption
Coefficient: |
~31.4%/cm @808nm |
| Absorption
Length: |
0.32mm @808nm |
| Stimulated
Emission Cross-Section: |
2.50x10-18 cm2 @1064nm |
| Fluorescent
Lifetime: |
90 µs (about 50 µs for 2 atm% Nd doped) @ 808nm |
| Intrinsic
Loss: |
0.02/cm @ 1064nm |
Gain Bandwith: |
0.96nm
(257 GHz) @ 1064nm |
Polarized Laser Emission: |
p polarization;parallel to optic axis
(c-axis) |
| Diode Pumped
Optical to Optical Efficiency: |
>60% |
Physical Properties:
| Crystal
Structure: |
Zircon
Tetragonal, space group D4h |
| Cell
Parameters: |
a=b=7.12Å, c=6.29Å |
| Mohs Hardness: |
»5 |
| Density: |
4.22g/cm3 |
| Hygroscopic
Susceptibility |
no |
| Thermal
Conductivity(W/cm·K): |
parallel to c:
0.0523; vertical to c: 0.0510 |
| Thermal
Expansion Coefficient: |
parallel
to a: 4.43x10-6; parallel to c: 11.37x10-6 |
Following are some common sizes:
| 1.5x1.5x0.1~3.0mm |
Flat ends with AR/HR-coatings |
| 2.0x2.0x0.1~5.0mm |
Flat ends with AR/HR-coatings |
| 3.0x3.0x0.1~30mm |
Flat ends with HR/AR-coatings |
| 3.0x3.0x2.0~30.0mm |
Plano/Convex (R>10mm) ends with HR/AR-coating |
| 3.0x3.0x2.0~30.0mm |
Plano/Concave (R<-10mm) ends with HR/AR-coating |
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