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<p><strong>A systematic performance evaluation of indigenously developed Shack-Hartmann wavefront sensor</strong></p>

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Title Statement <p><strong>A systematic performance evaluation of indigenously developed Shack-Hartmann wavefront sensor</strong></p>
 
Added Entry - Uncontrolled Name Porwal, Vikash ; Adaptive Optics Division, Instruments Research & Development Establishment Defence Research & Development Organisation, Dehradun - 248008, India
Dixit, Awakash ; Adaptive Optics Division, Instruments Research & Development Establishment Defence Research & Development Organisation, Dehradun - 248008, India Uttarakhand Technical University, Dehradun - 248007, India
Mamgain, Aditya Kumar; Adaptive Optics Division, Instruments Research & Development Establishment Defence Research & Development Organisation, Dehradun - 248008, India
Mishra, Sanjay Kumar; Adaptive Optics Division, Instruments Research & Development Establishment Defence Research & Development Organisation, Dehradun - 248008, India
Gupta, Arun Kumar; Adaptive Optics Division, Instruments Research & Development Establishment Defence Research & Development Organisation, Dehradun - 248008, India
 
Uncontrolled Index Term Optics; Astronomical instrumentation
Adaptive optics;; Shack-Hartmann wavefront sensor; Phase-only Spatial light modulator; Zernike modes
 
Summary, etc. Shack-Hartmann wavefront sensor (SH-WS) is the key subsystem of an adaptive optical system (AOS). The systematic performance evaluation is the prerequisite for the optimal utilization of SH-WS in AOS. This requires generation and sensing of pure (Zernike modes) and random aberrations in laboratory. The Zernike modes, tilt and defocus are generated in the laboratory through a simple experimental arrangement. Other Zernike modes astigmatism, coma, spherical aberration, and trefoil are generated through a phase-only spatial light modulator. The random wavefront errors have been generated through indoor convective turbulence. Further, the aberrated wavefronts have been sensed by SH-WS and calibrated standard methods, simultaneously. The recorded data is analyzed to estimate the performance parameters, which are discussed in terms of calibration, accuracy, precision, response of various Zernike modes, and sensing of indoor convective turbulence.
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2016-07-26 10:36:38
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/9293
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 54, ##issue.no## 7 (2016): Indian Journal of Pure & Applied Physics
 
Language Note en
 
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