Several variations of Raman spectroscopy have been developed.

· Surface Enhanced Raman Spectroscopy (SERS)

· Resonance Raman spectroscopy

· Surface-Enhanced Resonance Raman Spectroscopy (SERRS)

· Angle Resolved Raman Spectroscopy

· Hyper Raman

· Spontaneous Raman Spectroscopy (SRS)

· Optical Tweezers Raman Spectroscopy (OTRS)

· Stimulated Raman Spectroscopy

· Spatially Offset Raman Spectroscopy (SORS)

· Coherent anti-Stokes Raman spectroscopy (CARS)

· Raman optical activity (ROA)

· Transmission Raman

· Inverse Raman spectroscopy.

· Tip-Enhanced Raman Spectroscopy (TERS)

· Surface plasmon polaritons enhanced Raman scattering (SPPERS)