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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1989),
  • paper FD1

Stimulated vibration-rotational Raman scattering in hydrogen pumped by an alexandrite laser

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Abstract

We have observed a total of seventeen SRS lines generated by a circularly polarized alexandrite laser pumping an H2 cell. The cell length is 50 cm, and it is pressurized to 200 psi. Five lines are attributed to pure rotational Raman shifts, and twelve other lines are combinations of vibration- rotational shifts. The experimental arrangement is shown in Fig. 1. All the Raman wavelengths are measured, and the rotational transition processes are identified. It is found that the Raman lines are separated from one another by a frequency shift of 587 cm−1, which is associated with the energy separation between the two rotational states J = 1 and J = 3 in the ground vibrational state v = 0 of H2.1 The observations suggest that other rotational transitions are not involved in rotational Raman processes.

© 1989 Optical Society of America

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