Summary of optical spectroscopy methods

The choice of an optical spectroscopy technique, the measurement setup and the recording of the spectra must be carefully considered, and the following overviews are intended to provide an initial starting point. 

 

 

 

 

   

 

 

 Electron excitation 

 

 

 Vibrational spectroscopy 

 

 

 

 

   

 

 

 UV/VIS 

 

 

 Fluorescence 

 

 

 NIR 

 

 

 MIR 

 

 

 RAMAN 

 

 

 

 

 Signal 

 

 

 Absorption 

 

 

 Emission 

 

 

 Absorption 

 

 

 Absorption 

 

 

 Scattering 

 

 

 

 

 Excitation 

 

 

 Halogen, Deuterium (UV) 

 

 

 Discharge lamp, Laser 

 

 

 Halogen 

 

 

 Thermal emitter 

 

 

 Laser 

 

 

 

 

 Detector 

 

 

 Si 

 

 

 Si 

 

 

 InGaAs MCT 

 

 

 MCT 

 

 

 Si InGaAs 

 

 

 

 

 Sensitivity 

 

 

 high 

 

 

 high 

 

 

 mid 

 

 

 high 

 

 

 mid 

 

 

 

 

 Specifics 

 

 

 - 

 

 

 Detector 90° in direction of excitation 

 

 

 - 

 

 

 Special optical materials 

 

 

 longpass filter for excitation blocking 

 

 

 

 

 Imaging 

 

 

 simple 

 

 

 higher effort 

 

 

 simple 

 

 high effort 

 

 higher 

 effort