Neodymium-doped yttrium orthovanadate

From Wikipedia, the free encyclopedia
Jump to: navigation, search

Neodymium-doped yttrium orthovanadate (Nd:YVO4) is a crystalline material formed by adding neodymium ions to yttrium orthovanadate. It is commonly used as an active laser medium for diode-pumped solid-state lasers. It comes as a transparent blue-tinted material. It is birefringent, therefore rods made of it are usually rectangular.

As in all neodymium-doped laser crystals, the lasing action of Nd:YVO4 is due to its content of neodymium ions, which may be excited by visible or infrared light, and undergo an electronic transition resulting in emission of coherent infrared light at a lower frequency, usually at 1064 nm (other transitions in Nd are available, and can be selected for by external optics).

Basic properties[edit]

Optical properties[edit]

  • Crystal class : positive uniaxial, no=na=nb, ne=nc,
    • no=1.9573, ne=2.1652, at 1064 nm
    • no=1.9721, ne=2.1858, at 808 nm
    • no=2.0210, ne=2.2560, at 532 nm
Nd concentration (atom %) Fluorescence lifetime (μs)@ 1064 nm Reference
0.4 110 J. Appl. Phys. 49, 5517-5522 (1978).
1.0 100 Castech web site
1.1 90 Casix web site
2.0 50 Casix web site
  • Absorption cross-section at 808 nm : 5.5×10−20 cm²
  • Polarized laser emission : π-polarization; parallel to optic axis (c-axis) (for a-cut crystal)
  • Gain bandwidth : 0.96 nm (257 GHz) at 1064 nm (for 1.1 atm% Nd doped)
  • Absorption coefficients at 808 nm for different doping conenctrations:

See also[edit]

References[edit]