Content:
Conventional adaptive optics system --
Image spread with atmospheric turbulence --
The principle of phase conjugation --
Point spread function for an astronomical telescope --
Modeling the effect of atmospheric turbulence --
Fried's coherence length --
Astronomical "brightness" --
Isoplanatic angle --
Zernike polynomials --
Atmospheric turbulence models --
Coherence length for various wavelengths and turbulence models --
Variations in commonly used turbulence models --
Wind models --
Kolmogorov model --
Greenwood frequency --
Angle of arrival fluctuations (image motion) --
Modulation transfer function --
Beam propagation --
Laser "brightness" --
The Strehl ratio--laser beam propagation to the far field with wavefront error --
Strehl ratio --
Spot size for a Gaussian beam --
Spot size for a uniform circular aperture --
System performance estimation --
System performance estimation --
Modal and zonal fitting error --
Partial correction --
Temporal error --
Focal anisoplanatism (the "cone effect") --
Laser guide stars --
Scintillation --
Wavefront sensors --
Wavefront sensor requirements --
Shack-Hartmann wavefront sensor and error --
Lenslet array selection --
Shearing interferometer wavefront sensor and error --
Curvature wavefront sensor and error --
Curvature wavefront sensor error --
Deformable mirrors --
Tilt mirror requirements --
Deformable mirror requirements --
Deformable mirror actuator configurations. Actuator and wavefront sensor layouts --
Actuators, requirements for zonal or modal control --
Deformable mirror influence function models --
Bimorph and MEMS mirrors --
Segmented deformable mirrors --
Control and reconstruction --
Adaptive optics system control model --
Reconstructor --
Wavefront control --
Influence matrix --
Kalman filtering and wavefront estimation --
Computational latency --
Predictor --
Effect of sampling rate on achievable bandwidth --
--
Hartmann sensing software implementation --
Appendix. Equation summary --
Notes --
Bibliography --
Index.
Abstract:
A summary of the methods for determining the requirements of an adaptive optics system, the performance of the system, and requirements for the components of the system. Many of the expressions are in the form of integrals. When that is the case, the authors show the results graphically for a variety of practical values. Read more...