Raman Scattering Studies
Final technical rept. 15 Apr-31 Dec 1972
GENERAL ELECTRIC CORPORATE RESEARCH AND DEVELOPMENT SCHENECTADY NY
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Absolute cross sections for rotational Raman scattering have been derived for N2 and O2 from the near uv to the IR, with particular attention to 10.6microns, using a theoretical extrapolation of data obtained in the visible. The feasibility of remote optical sensing using near resonant enhancement of Raman scattering has been studied by a search for such enhancement from ClF, Cs2, and Na2. Enhancement was seen from Na2, but the signal could not be clearly demonstrated as Raman scattering. Use of resonant effects Raman, fluorescence, or absorption in remote probing requires both a narrow line and high power from a tunable laser. Injection narrowing of a high power flashlamp-pumped oscillator is shown to be an effective means to obtain a narrow line at reasonable power. Application of the Zig-Zag Face-Pumped laser configuration to dye lasers is shown to provide a high brightness, high average power amplifier, and a design basis for further development has been established.
- Lasers and Masers
- Atomic and Molecular Physics and Spectroscopy