Stimulated Raman scattering in atmospheric nitrogen has been observed using two copropagating high power laser beams at 1.064 mu m and 1.053 mu m from a neodymium glass laser. This is due to the near coincidence of the beat frequency at 98.2 cm-1 with a rotational line of nitrogen (transition between J=11 and J=13) at 99 cm-1. The beams were of total intensity 6*109 W cm-2 and had a common air path of approximately=30 m. Large amplitude Stokes and anti-Stokes sidebands up to one half the pump beam intensity were generated. The observations are compared with a theoretical treatment of the interaction.
|Journal||Journal of Physics B: Atomic, Molecular and Optical Physics|
|Publication status||Published - 1989|
|MoE publication type||Not Eligible|
Dangor, A., Dymoke-Bradshaw, A., Dyson, A., Garvey, T., Karttunen, S., Partanen, J., Salomaa, R., Cole, A., Danson, C., & Edwards, C. (1989). Forced Raman scattering in atmospheric nitrogen of a high power two frequency laser beam. Journal of Physics B: Atomic, Molecular and Optical Physics, 22(5), 797-805. https://doi.org/10.1088/0953-4075/22/5/010