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To avoid fluorescence (which is lower than the laser energy) the anti-stokes Raman radiation (the molecular oscillations that boost the laser energy) can be looked at, right? This involves switching the edge-pass filter from longpass to shortpass and maybe adjusting the spectrometer's optimal wavelength range. Downside is that anti-stokes emmisiom is not as strong, but maybe SERS can help.Unfortunately I got AR coating in the optics I ordered (400-700nm range) before I read about the dual laser approach from benzyme, so switching lasers would not be straightforward for me.DrSeltsman, incase you have not seen it yet, we crudely overlayed DMT spectrums from FTIR absorption and Raman emmision here. Like benzyme said they sure look complimentary.
To avoid fluorescence (which is lower than the laser energy) the anti-stokes Raman radiation (the molecular oscillations that boost the laser energy) can be looked at, right? This involves switching the edge-pass filter from longpass to shortpass and maybe adjusting the spectrometer's optimal wavelength range. Downside is that anti-stokes emmisiom is not as strong, but maybe SERS can help.
Unfortunately I got AR coating in the optics I ordered (400-700nm range) before I read about the dual laser approach from benzyme, so switching lasers would not be straightforward for me.
DrSeltsman, incase you have not seen it yet, we crudely overlayed DMT spectrums from FTIR absorption and Raman emmision here. Like benzyme said they sure look complimentary.
