Wind-shear induced stabilization of PCI
JOSA A, Vol. 15, Issue 5, pp. 1212-1226 (1998)
http://dx.doi.org/10.1364/JOSAA.15.001212
Acrobat PDF (425 KB)
Abstract
Phase compensation instability (PCI) is a runaway process associated with the operation of a closed-loop phase-only adaptive-optics system transmitting through the atmosphere a large-diameter laser beam with a high power density. Under most conditions such an operation introduces positive feedback; if the laser power density is sufficiently high, there is the possibility of PCI-type runaway of the adaptive-optics servo. It is now known that the occurrence of PCI is inhibited by wind shear (wind-shear induced stabilization of PCI, or WISP) because at every different position along the propagation path the turbulent wind has a (slightly) different component of velocity in the plane transverse to the laser beam’s propagation direction. We develop a set of equations from which the conditions for the onset of PCI can be determined. Sample results are presented for propagation through an atmosphere with a negative exponential absorption profile—which nominally corresponds to ground-to-space propagation. The results indicate that for typical conditions (as a consequence of wind shear) one can transmit a rather substantial laser power density without encountering PCI. As an example of the application of our theory, the expected Strehl ratio for a HV5/7 turbulence model is evaluated for the parameters of a nominal ground-to-space high-energy laser beam propagation system.
© 1998 Optical Society of America
OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
(120.6810) Instrumentation, measurement, and metrology : Thermal effects
(350.5030) Other areas of optics : Phase
Citation
David L. Fried and Roque Kwok-Hung Szeto, "Wind-shear induced stabilization of PCI," J. Opt. Soc. Am. A 15, 1212-1226 (1998)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-15-5-1212
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Variance of the Strehl ratio of an adaptive optics system (JOSAA)
- Reconstruction of discontinuous light-phase functions (OL)
- Earth-to-deep-space optical communications system with adaptive tilt and scintillation correction by use of near-Earth relay mirrors (OL)
- Experimental validation of a technique to measure tilt from a laser guide star (OL)
- Dispersion Relation for Real-Plane Zeros as a Concept of Wave-Front Measurement (AO)
Related Conference Papers
- Assessment of Issues for Propagation through Strong Turbulence
- Application of Adaptive Optics to Lasercom
- Free Space Optical Communications Link Budget Estimation
- Relay-Assisted Free-Space Quantum-Key Distribution with Partial Phase Compensation
- Wave Optics Simulation of Propagation through Deep Turbulence
« Previous Article | Next Article »
OSA is a member of 