New methods for laser sounding of atmosphere on basis of nonlinear effects
Abstract
Atmospheric sounding techniques based on nonlinear and coherent optical effects associated with the use of high-power lasers are reviewed with reference to three groups of methods. The first group includes lidar methods relying on optical, acoustic, and radio emissions during remote laser breakdown of the atmosphere as sources of information. The second group comprises methods of nonlinear and coherent Raman spectroscopy at vibrational-rotational transitions of gas molecules and resonant fluctuations of the shape of aerosol particles. The third group includes highly sensitive atmospheric sounding methods based on nonlinear intracavity effects during laser reception of echo signals. The discussion also covers problems related to the nonlinearity of lidar signals and applicability limits of linear equations of optical location in traditional sounding schemes employing high-power laser sources.
- Publication:
-
USSR Report Earth Sciences JPRS UES
- Pub Date:
- November 1985
- Bibcode:
- 1985RpESc.......34Z
- Keywords:
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- Atmospheric Sounding;
- High Power Lasers;
- Laser Applications;
- Nonlinear Optics;
- Aerosols;
- Coherent Light;
- Echoes;
- Homodyne Reception;
- Light Scattering