- Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi
- Vol: 11 Issue: 2
- Raman Excitation of Hydrogen Molecules to v = 1 State
Raman Excitation of Hydrogen Molecules to v = 1 State
Authors : Ilhan Candan
Pages : 1068-1079
Doi:10.21597/jist.828194
View : 7 | Download : 5
Publication Date : 2021-06-01
Article Type : Research
Abstract :Coherent anti-Stokes Raman scattering (CARS) can reveal a molecule’s vibrational spectrum to a great extent. Instantaneous interaction of Stokes and pump beams stemming from powerful pulsed lasers excites a molecule’s vibrational modes in CARS. In this technique, combining two visible laser beams could create spectra resonances relating to vibrational transitions. In this work, Raman excitation of Hydrogen molecules to v = 1 state is achieved by CARS spectroscopy. CARS measurements are successfully carried out for H2 S-branch and Q-branch transitions using our laser system. This measurement proves the feasibility of CARS experiment which could be employed to excite molecules to a specific rovibrational state. Moreover, experiments conducted for CARS signal with respect to various gas pressures differing between 200 and 600 torr for S-branch transition of H2 molecule.Keywords : H2, Coherent anti Stokes Raman scattering, Q-branch