Real-time atmospheric compensation by stimulated Brillouin-scattering phase conjugation
| Autor: | Hans W. Bruesselbach, David A. Rockwell, D. Cris Jones, George Vogel, Richard C. Lind |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Optical amplifier
Amplified spontaneous emission Materials science Raman amplification Aperture business.industry Statistical and Nonlinear Physics Laser Atomic and Molecular Physics and Optics law.invention symbols.namesake Optics law Brillouin scattering symbols Raman spectroscopy Phase conjugation business |
| Zdroj: | Journal of the Optical Society of America B. 12:1434 |
| ISSN: | 1520-8540 0740-3224 |
| DOI: | 10.1364/josab.12.001434 |
| Popis: | We report the first demonstration to our knowledge of atmospheric compensation at extended ranges by stimulated Brillouin-scattering phase conjugation. With a field-of-view aperture product of 175 mm mrad, we studied horizontal ranges up to 6 km at a 2.5-m height above ground, with the refractive-index structure parameter Cn2 as large as 10−13 m−2/3. Compensation was achieved at all ranges, consistent with the turbulence-resolution capability of the 10-cm system aperture. The system was driven by frequency-doubled Nd:YAG lasers operating with ~10-ns pulses that were Raman shifted in gaseous hydrogen to the 683-nm operating wavelength. Raman amplification overcame as much as 85 dB of range and internal losses. |
| Databáze: | OpenAIRE |
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