23 citations · 60 across the 12 of their papers we have counts for
12 papers
Extrapolating Zernike Moments to Predict Future Optical Wave-fronts in Adaptive Optics Using Real Time Data Mining
Akondi Vyas, M. B. Roopashree, B. Raghavendra Prasad
We present the details of predicting atmospheric turbulence by mining Zernike moment data obtained from simulations as well as experiments. Temporally correlated optical wave-front…
Performance of centroiding algorithms at low light level conditions in adaptive optics
Akondi Vyas, M. B. Roopashree, B. Raghavendra Prasad
The performance metrics of different centroiding algorithms at low light level conditions were optimized in the case of a Shack Hartmann Sensor (SHS) for efficient performance of t…
Prediction of wavefronts in adaptive optics to reduce servo lag errors using data mining
Akondi Vyas, M B Roopashree, B Raghavendra Prasad
Servo lag errors in adaptive optics lead to inaccurate compensation of wavefront distortions. An attempt has been made to predict future wavefronts using data mining on wavefronts…
Digital long focal length lenslet array using spatial light modulator
Akondi Vyas, M B Roopashree, B Raghavendra Prasad
Under a thin lens and paraxial approximation, the phase transformation function of a lens was simulated on a Liquid Crystal (LC) based Spatial Light Modulator (SLM). The properties…
Effective coherence length estimation of optical wavefronts
Akondi Vyas, M. B. Roopashree, B. Raghavendra Prasad
In adaptive optics, the measurement of spatial coherence length helps in deciding the optimum design parameters of a Shack Hartmann Sensor (SHS). Two methods of estimating the spat…
Phase characteristics of reflecting and transmitting type twisted nematic spatial light modulators
M B Roopashree, Akondi Vyas, Ravinder Kumar Banyal +1
The phase characteristics of reflecting and transmitting type twisted nematic liquid crystal based Spatial Light Modulators (SLMs) were measured using interferometry. Device parame…