Raman spectroscopy apparatuses are described that detect the spectral characteristics of a sample wherein the apparatus consists of a multiplicity of modulated discrete light sources adapted to excite a sample with electromagnetic radiation, a filter adapted to isolate a predetermined wavelength emitted by the sample wherein the wavelength is further modulated at different frequencies, and a detector for detecting the isolated wavelength. The apparatus may further consist of an interferometer, such as a Michelson interferometer, adapted to modulate the excitation energy. Also provided herein are methods, systems, and kits incorporating the Raman spectroscopy apparatus.