Raman minerals

266'ish Laser potentials

Laser	Company	Web site
QUV-266-5, QUV-262-5	CrystalLaser	http://www.crystalaser.com/laser/uv-laser.html
FQSS266-Q	CryLas	http://www.crylas.de/products/pulsed_laser_low.html
SNU-02P-100, SNU-20F-100, SNU-40F-100	Teem Photonics	http://www.teemphotonics.com/products/laseroffe/microchipsfamily/266-nm.html
PULSELAS-P-1064-xxx	AlphaLas	http://www.alphalas.com/products/lasers/subnanosecond-passively-q-switched-dpss-microchip-lasers-pulselas-p-series.html
DTL-389QT	Laser Export	http://laser-export.com/prod/389.html

Raman shift

In colloquial usage, Raman shifts are typically in wavenumbers, which have units of inverse length. In order to convert between spectral wavelength and wavenumbers of shift in the Raman spectrum, the following formula can be used:

<math>\Delta w = \left( \frac{1}{\lambda_0} - \frac{1}{\lambda_1} \right) \ , </math>

where <math>\Delta w</math> is the Raman shift expressed in wavenumber, λ₀ is the excitation wavelength, and λ₁ is the Raman spectrum wavelength. Most commonly, the units chosen for expressing wavenumber in Raman spectra is inverse centimeters (cm⁻¹). Since wavelength is often expressed in units of nanometers (nm), the formula above can scale for this units conversion explicitly, giving

<math>\Delta w (\text{cm}^{-1}) = \left( \frac{1}{\lambda_0 (\text{nm})} - \frac{1}{\lambda_1 (\text{nm})} \right) \times 10^{7}, \text{effectively multiplying by } \frac{(\text{nm})}{(\text{cm})} . </math>

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     <text xml:space="preserve" bytes="1045">== Raman shift ==

In colloquial usage, Raman shifts are typically in wavenumber's, which have units of inverse length. In order to convert between spectral wavelength and wavenumbers of shift in the Raman spectrum, the following formula can be used:

<math>\Delta w = \left( \frac{1}{\lambda_0} - \frac{1}{\lambda_1} \right) \ , </math>

where <math>\Delta w</math> is the Raman shift expressed in wavenumber, λ₀ is the excitation wavelength, and λ₁ is the Raman spectrum wavelength. Most commonly, the units chosen for expressing wavenumber in Raman spectra is inverse centimeters (cm⁻¹). Since wavelength is often expressed in units of nanometers (nm), the formula above can scale for this units conversion explicitly, giving

<math>\Delta w (\text{cm}^{-1}) = \left( \frac{1}{\lambda_0 (\text{nm})} - \frac{1}{\lambda_1 (\text{nm})} \right) \times 10^{7}, \text{effectively multiplying by } \frac{(\text{nm})}{(\text{cm})} . </math>

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