| 청구기호 |
TA1522 .T93 2004e |
| 다른형태 서명 |
Adaptive optics.
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| 형태사항 |
1 online resource (xiii, 67 p. : ill.) : digital file.
|
| 언어 |
English |
| 일반주기 |
"SPIE digital library."
|
| 서지주기 |
Includes bibliographical references (p. 62-64) and index.
|
| 내용 |
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.
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| 주제 |
Optics, Adaptive.
Optical detectors.
Optical measurements.
|
| 보유판 및 특별호 저록 |
(Original) 0819453196 , 2004005336
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| ISBN |
9780819478184 (electronic)
|
| 기타 표준번호 |
10.1117/3.549261 |
