Stability of adaptive control of a light beam in the presence of nonstationary thermal blooming in a moving medium

Journal Article · Wed Jun 01 00:00:00 EDT 1988 · Radiophys. Quantum Electron. (Engl. Transl.); (United States)

OSTI ID:6044667

Egorov, K D

The adaptive control problem for a nonlinearly propagating light beam in a moving atmosphere presupposes continuous optimization of the beam parameters while the characteristics of the medium are varying. If the time scales of such variations are comparable to the characteristic times for the establishment of a thermal lens along the ray path, the beam can be controlled under highly nonstationary propagation conditions. We investigate the mechanism of stability loss during adaptive focusing of a light beam subject to wind refraction. In the aberrationless approximation, we examine the dynamics of beam parameters controlled by adaptive systems capable of operating at different speeds.

• Research Organization: Univ. of Moscow (USSR)
• OSTI ID: 6044667
• Journal Information: Radiophys. Quantum Electron. (Engl. Transl.); (United States), Vol. 30:12; Other Information: Translated from Izvestiya Vysshykh Uchebnykh Zavedenii, Radiofizika; 30: No. 12, 1463-1469(Dec 1987)
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
BEAM OPTICS
TEMPERATURE EFFECTS
EARTH ATMOSPHERE
WAVE PROPAGATION
LASER RADIATION
CONTROL
LASERS
COMPUTERIZED CONTROL SYSTEMS
ALGORITHMS
ENERGY LOSSES
FOCUSING
LENSES
MATHEMATICAL MODELS
NONLINEAR OPTICS
OPTIMIZATION
POWER SERIES
REFRACTION
STABILITY
WIND
CONTROL SYSTEMS
ELECTROMAGNETIC RADIATION
LOSSES
MATHEMATICAL LOGIC
OPTICS
RADIATIONS
SERIES EXPANSION
420300* - Engineering- Lasers- (-1989)