Raman spectroscopy Experiment

Raman Spectroscopy is based on the inelastic scattering of monochromatic radiation. During this process, energy is exchanged between the incident photons and the material in such a way that the scattered photons have higher or lower energy than the incident photons. This energy difference is due to variations in the rotational and vibrational energy of the excited molecules.

Unique educational set allowing the exploration of the theme of Raman Spectroscopy and its applications at the Higher Education level. This product is both modular (possibility to conduct your own experiments, study the different parts of the setup, etc.) and multidisciplinary (Physics, Chemistry, Biology).

Topics covered:
- Study of different parts of the setup: filters (band-pass, high-pass, band-stop) and their behaviors depending on the angle of incidence, spectrometer (resolution, CCD sensor size), sources (spectrum, full width at half maximum)
- Vibrational Spectroscopy, Rayleigh Scattering, Raman Scattering, wavenumber
- Optical phonons, Fluorescence
- Vibration modes and polarization effect
- Non-destructive analysis method (polymers, crystals, liquids)

Principles and objectives:
Understanding the operation of a Raman spectrometer by assembling it oneself and ensuring optical alignment and optimization. Analysis of the fundamental principles of this technique: practical demonstration of the Raman effect, luminescence phenomena, observation and exploitation of vibration modes, influence of polarization, ... through various practical cases in Solid State Physics, Chemistry, or Biology.

Composition:
▪ 1 honeycomb optical table 600x450 mm
▪ 1 set of 9 standard magnetic feet
▪ 1 lateral translation magnetic foot
▪ 1 green laser diode 532 nm - 100 mW - fiber output / power supply
▪ 2 pairs of alignment and laser protection glasses 532 nm up to 100 mW
▪ 1 laser fiber holder with adapter, adjustable diaphragm, and collimation optics
▪ 1 40 mm diameter metalized diaphragm with rod support
▪ 1 25 mm diameter collimation lens (F=+50 cm) with rod support
▪ 1 25 mm diameter mirror, flat with X_Y adjustment support on rod
▪ 1 interferential filter (532 nm - FWHM 3 nm) 25 mm diameter with rod support
▪ 1 high-pass filter (Edge-532nm-OD6) 12.5 mm diameter with X_Y adjustment support on rod
▪ 1 band-stop filter (Notch-532nm-OD4) diam. 12.5 mm with X_Y adjustment support on rod
▪ 1 compact Visible USB spectrometer (350-800 nm), 1.5 nm resolution
▪ 1 optical fiber for spectrometer, SMA connector
▪ 1 4-axis adjustable X_Y + tilt fiber support with adapter, focusing optics, and support
▪ 1 25 mm diameter focusing lens (F=+4 cm) with rod support
▪ 1 axis shift on rod and 1 multifunction support on rod with holding finger
▪ 1 set of various study samples (polymers, minerals, crystals, liquids, ...)
▪ 1 linear glass polarizers 25 mm diameter with rotatable mount (360°) and vernier
▪ 1 neon source (bulb, support, power supply) and 1 rack-adjustable LED lantern
▪ 1 laser power meter with rod support
▪ 1 acquisition and processing software
▪ 1 experiments manual