Nd:YVO4 Laser Crystal
Neodymium Doped Yttrium Orthovanadate (Nd:YVO4) is an efficient laser host crystal for low to medium power density diode pumping among current commercial laser crystals.
Nd:YVO4 has superior absorption and emission characteristics over Nd:YAG, mainly excelling in that aspect.
Pumped by a laser diode, the Nd:YVO4 crystal is combined with a crystal of high nonlinear optical coefficient (LBO, BBO, or KTP), achieving output frequency shifts from near-infrared to green, blue, or ultraviolet.
This provides an ideal laser tool for constructing all-solid-state lasers, covering a wide range of laser applications such as machining, material processing, spectroscopy, wafer inspection, light displays, medical diagnostics, laser printing, and data storage.
It has been shown that Nd:YVO4-based diode-pumped solid-state lasers are rapidly occupying markets traditionally dominated by water-cooled ion lasers or lamp-pumped lasers when compact design and single longitudinal mode output are required.
Nd:YVO4’s advantages over Nd:YAG
- As high as about five times larger absorption efficient over a wide pumping bandwidth around 808 nm
(therefore, the dependency on pumping wavelength is much lower and a strong tendency to the single mode soutput) - As large as three times larger stimulated emission cross-section at the lasing wavelength of 1064nm
- Lower lasing threshold and higher slope efficiency
- As a uniaxial crystal with a large birefringence, the emission is only a linearly polarized.
TOYOKOU Can Provide Nd:YVO4 as following
- Various doping concentration from 0.1% to 3%
- Doping concentration tolerance:±0.05%(atm%<1%),±0.1%(atm%≥1%)
- Various size bulk and finished high quality Nd:YVO4 crystals up to Φ35×50mm3 and Φ20×20mm3, respectively;
- 10,000 pcs of Nd:YVO4 devices per month in sizes 3×3×0.5 to 4×4×8 mm
- With quick delivery
- With competitive price
Basic Properties
| Atomic Density | 1.26 × 1020 atoms/cm3 (Nd1.0%) |
|---|---|
| Crystal Structure | Zircon Tetragonal, space group D4h-I4/amd a=b=7.1193A,c=6.2892A |
| Density | 4.22 g/cm3 |
| Mohs Hardness | 4-5 (Glass-like) |
| Thermal Expansion Coefficient(300K) | αa=4.43×10-6/K αc=11.37×10-6/K |
| Thermal Conductivity Coefficient(300K) | /C:0.0523W/cm/K ⊥C:0.0510W/cm/K |
| Optical Properties of Nd:YVO4 | |
| Lasing wavelength | 1064 nm, 1342 nm |
| Thermal optical coefficient (300K) | dno/dT=8.5×10-6/K dne/dT=2.9×10-6/K |
| Stimulated emission cross-section | 25×10-19 cm2 @1064 nm |
| Fluorescent lifetime | 90 µs(1% Nd doping) |
| Absorption coefficient | 31.4 cm-1 @810 nm |
| Intrinsic loss | 0.02 cm-1 @1064 nm |
| Gain bandwidth | 0.96 nm @1064 nm |
| Polarized laser emission | π polarization; parallel to optic axis(c-axis) |
| Diode pumped optical to optical efficiency | > 60 % |
| Sellemeier equations (λ in um) | n02=3.77834+0.069736/(λ2-0.04724)-0.010813λ2 ne2=4.59905+0.110534/(λ2-0.04813)-0.012676λ2 |