Description
Barium nitrate (Ba(NO3)2) is a crystal that is commonly used as a Raman crystal in Raman spectroscopy. It is a colorless, transparent crystal that has a high Raman scattering efficiency and a broad Raman spectrum, making it suitable for a range of Raman applications.
Barium nitrate crystals are used as Raman scattering materials because they have strong Raman scattering at a number of different wavelengths. When a laser beam is directed onto the crystal, the photons in the laser beam interact with the crystal lattice, causing some of the photons to scatter in a different direction. The scattered photons have a different wavelength and energy than the incident photons, which creates a Raman spectrum.
Barium nitrate has a broad Raman spectrum that extends from the ultraviolet to the near infrared, making it useful for a range of applications. The crystal can be used as a reference material for Raman spectroscopy, as well as a sample for studying Raman scattering in the solid state.
In addition to its use as a Raman crystal, barium nitrate is also used in pyrotechnics, as a component of high-energy propellants, and as a flame retardant in plastics and other materials.
Transmission range, µm | 0.35 - 1.80 |
Syngony | cubic |
Symmetry, space group | P213 |
Lattice parameter, Å | 8.11 |
Density, g/cm3 | 3.25 |
Mohs hardness | 2.5 - 3.0 |
Refractive indexes: | - |
at 0.5481 µm | 1.5758 |
at 1.064 µm | 1.5551 |
at 2.00 µm | 1.5452 |
at 2.50 µm | 1.5399 |
Stocks frequency shift, cm-1 | 1047 |
Relative optical uniformity, ” n/cm | (3 - 7) x 10-6 |
Stokes | Ba(NO3)2 pumped @532 nm | Ba(NO3)2 pumped @1064 nm |
1 Stoke | 563 | 1197 |
2 Stoke | 598 | 1369 |
3 Stoke | 638 | 1599 |
4 Stoke | 684 | 1924 |
1 Antistoke | 503 | 957 |
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