Neodymium doped Yttrium Vanadate (Nd:YVO4) is a new crystal for diode pumped lasers. Several advantages with respect to Nd: YAG include a wide Nd absorption peak, lower threshold and polarized output. The wide absorption peak allows to use the diode lasers with optimum pump wavelength centered at 808 nm with a useful range of 802 to 820 nm. In this case the laser output power is less sensitive to drifting of the diode pump wavelength due to temperature or other effects. For Nd:YAG useful pumping range is 808 ± 3 nm .
| Chemical Formula | Y.99Nd.01VO4 |
|---|---|
| Crystal Structure | tetragonal |
| Space Group | I4/ amd |
| Lattice Parameter, Å | a = 7.12 c = 6.29 |
| Density, g/cm3 | 4.22 |
| Transmission wavelength, mm | 0.3 - 2.5 |
| Refraction indices at 1064 nm | no = 1.958 nc = 2.168 |
| Thermal conductivity, W· cm-1 ° C-1 | || to c-axis: 0.0523 ^ to c-axis: 0.0510 |
| Nd concentration, at % | 1.1 ± 0.1 |
| Absorption coefficient (E || c,at 808 nm ), cm-1 | 40 |
| Emission cross-section (E || c, at 1064 nm), cm2 | 7.6 · 10 -19 |
| Absorption cross-section ( at 808 nm ), cm2 | 27 · 10 -20 |
| Lasing Wavelength, nm | 1064.3 |
| Lasing Transition | 4F3/2 - 4I11/2 |
Dimensions:
|
3 x 3 (+0.000/-0.025 ) |
|---|---|
| Flatness, measured at 632.8 nm | < 1/10 wave |
| Parallelism, arc.sec | < 10 |
| Surface finish, Scratch/Dig | 10/5 |
AR/HR coatings are available.
| Del Mar Ventures 12595 Ruette Alliante #148 San Diego, CA 92130 v/fax: (509)752-0123 delmarventures@yahoo.com |
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