Excitation wavelength in the deep UV (

Try using 514.5 nm wavelength as laser source

In case, I have carbon dots with excitation dependent fluorescence emission properties, how can I choose Raman laser sourse? and how can I avoid fluorescent interference?

Try a pulsed laser system. I have used that to acquire the Raman spectra of fluorescent CDs. Cheers!

I faced the same problem. But, using 1064 nm excitation wavelength, we could avoid fluorescence. However, I only see the sp2 band.