| 청구기호 |
TA1522 .T95 2000e |
| 형태사항 |
1 online resource (ix, 116 p. : ill. (some col.)) : digital file.
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| 언어 |
English |
| 일반주기 |
"SPIE digital library."
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| 서지주기 |
Includes bibliographical references and index.
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| 내용 |
1. A long time ago, in a laboratory far, far, really far away -- 2. Adaptive optics systems--optics is our middle name -- Physical/wave optics as it applies to adaptive optics -- Strehl ratio -- 3. Speaking the language: a few definitions -- Power in the bucket -- Zernike polynomials -- Phase conjugation -- Imaging and MTF -- 4. Atmospheric turbulence: bad air ... bad, bad air -- Structure constant -- Gaussian beams -- Fried's coherence length -- Scintillation -- Resolution and the halo -- Temporal effects: the Greenwood frequency -- Thermal blooming -- Anisoplanatism -- 5. Laser guide stars: beacons in the wilderness -- Why we can't measure global tilt from a laser guide star -- 6. Systems: putting it all together -- Configurations of adaptive optics systems -- 7. Wavefront sensors: the eyes -- Measuring tilt -- The quadcell -- Measuring focus -- Interferometers -- The principle of the shearing interferometer -- Hartmann sensors -- Curvature sensing -- Image sharpening -- Wavefront sensor requirements -- Detectors -- Beamsplitters and samplers -- 8. Deformable mirrors: the hands -- Types of deformable mirrors -- Tilt mirrors -- Deformable mirrors -- Deformable mirror requirements -- Bimorph deformable mirrors -- Micromachined deformable mirrors -- 9. Control computers and reconstructors: the brains -- Single-channel servo control -- Single-channel dynamic control -- Bandwidth limitations -- Phase reconstruction -- Example problem: actuator commands from wavefront slopes.
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| 주제 |
Optics, Adaptive.
Optical instruments.
Optical detectors.
Optical measurements.
Telescopes.
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| 보유판 및 특별호 저록 |
(Original) 0819435112 , 99058692
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| ISBN |
9780819478603 (electronic)
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| 기타 표준번호 |
10.1117/3.358220 |
