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Course Summary
- Overview of adaptive optics: historical perspective.
- Aberrations of optical systems, wavefront polynomial, Seidel and Zernike
coefficients.
- Atmospheric turbulence, spatial and temporal characteristics, description
in terms of Zernike coefficients, effects of turbulence distributions.
- System-level design: correction order, optical design considerations,
turbulence imaging, wavefront sensing light selection, trade-offs.
- Principle of wavefront sensing, fundamental limits.
- Wavefront sensors: Shack-Hartmann, shearing interferometry, curvature
sensing, other wavefront sensors.
- Wavefront sensing detectors, APDs, CCDs, etc., readout techniques and
trade-offs.
- Wavefront reconstruction techniques: zonal and modal methods, optimal
reconstructions, off-axis considerations, multi-conjugate adaptive optics.
- Deformable mirrors: segmented, monolithic, continuous facesheet, bimorph,
micromachined devices.
- Liquid crystal wavefront controllers. Phase modulation using nematic
and ferroelectric liquid crystals. Electrically and optically
addressed spatial light modulators.
- Practical liquid crystal devices and their optical performance.
Results of aberration correction and aberration generations
- Closed loop control systems: system bandwidths, timing and latency
trade-offs, importance of tip-tilt-only effects such as windshake, temporal
filtering, multi-processor implementation.
- Laser beacons for astronomy and space asset imaging.
- Modelling of adaptive optical systems, model atmospheres, wavefront
sensing geometry, deformable mirror modes, off-axis and laser beacon-related
effects.
- Practical implementation of adaptive optics systems
Disclaimer - This items on this list are subject to change.
