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.
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.
| Birincil Dil | İngilizce |
|---|---|
| Konular | Metroloji,Uygulamalı ve Endüstriyel Fizik |
| Bölüm | Araştırma Makalesi |
| Yazarlar | |
| Gönderilme Tarihi | 20 Kasım 2020 |
| Kabul Tarihi | 6 Şubat 2021 |
| Yayımlanma Tarihi | 1 Haziran 2021 |
| Yayımlandığı Sayı | Yıl 2021 Cilt: 11 Sayı: 2 |