Optical Raman spectra of water in quartz cuvette, and empty quartz cuvette, measured with Thorlabs Raman Kit at 785nm laser diode wavelength

The Thorlabs Raman spectroscopy kit was tested with water. The excitation light was 785nm laser diode. The laser wavelength was calibrated with a NIST polystyrene sample in the shape of a prisma with size of a cuvette. The sample was the empty quartz cuvette, and the cuvette filled with water. Simple subtraction of both spectry yields a watzer spectrum, with a broad H-O-H vibration peak at 900 nm.

Modular Raman Spectroscopy Kit (thorlabs.de)