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pro vyhledávání: '"Letchev, Stanimir"'
The nonlinear curvature wavefront sensor (nlCWFS) uses multiple (typically four) out-of-focus images to reconstruct the phase and amplitude of a propagating light beam. Because these images are located between the pupil and focal planes, they contain
Externí odkaz:
http://arxiv.org/abs/2407.14657
Autor:
Letchev, Stanimir, Crepp, Justin R., Abbott, Caleb G., Hersey, Ryan, Engstrom, Matthew, Baggett, Nicholas
Local amplitude aberrations caused by scintillation can impact the reconstruction process of a wavefront sensor (WFS) by inducing a spatially non-uniform intensity at the pupil plane. This effect is especially relevant for the commonly-used Shack-Har
Externí odkaz:
http://arxiv.org/abs/2407.14606
Consistent operation of adaptive optics (AO) systems requires the use of a wavefront sensor (WFS) with high sensitivity and low noise. The nonlinear curvature WFS (nlCWFS) has been shown both in simulations and lab experiments to be more sensitive th
Externí odkaz:
http://arxiv.org/abs/2312.01465
The nonlinear curvature wavefront sensor (nlCWFS) offers improved sensitivity for adaptive optics (AO) systems compared to existing wavefront sensors, such as the Shack-Hartmann. The nominal nlCWFS design uses a series of imaging planes offset from t
Externí odkaz:
http://arxiv.org/abs/2310.03062
Publikováno v:
Proc. SPIE 12185, Adaptive Optics Systems VIII, 121858H (29 August 2022)
The nonlinear curvature wavefront sensor (nlCWFS) has been shown to be a promising alternative to existing wavefront sensor designs. Theoretical studies indicate that the inherent sensitivity of this device could offer up to a factor of 10 times impr
Externí odkaz:
http://arxiv.org/abs/2209.00071
Autor:
Crepp, Justin R., Letchev, Stanimir O., Potier, Sam J., Follansbee, Joshua H., Tusay, Nicholas T.
Publikováno v:
Optics Express, 2020, Volume 28, Issue 25
Strong turbulence conditions create amplitude aberrations through the effects of near-field diffraction. When integrated over long optical path lengths, amplitude aberrations (seen as scintillation) can nullify local areas in the recorded image of a
Externí odkaz:
http://arxiv.org/abs/2012.12695
Autor:
Jackson, Kathryn J., Schmidt, Dirk, Vernet, Elise, Abbott, Caleb G., Crepp, Justin R., Letchev, Stanimir O., Smith, Connor M.
Publikováno v:
Proceedings of SPIE; August 2024, Vol. 13097 Issue: 1 p130973X-130973X-10, 12966338p
Autor:
Jackson, Kathryn J., Schmidt, Dirk, Vernet, Elise, Letchev, Stanimir, Crepp, Justin R., Abbott, Caleb G., Hersey, Ryan, Engstrom, Matthew, Baggett, Nicholas
Publikováno v:
Proceedings of SPIE; August 2024, Vol. 13097 Issue: 1 p130973N-130973N-6, 1178764p
Autor:
Bryant, Julia J., Motohara, Kentaro, Vernet, Joël R. D., Stürmer, Julian, Buchhave, Lars A., Jessen, Niels C., Pedersen, Søren M., Seifahrt, Andreas, Letchev, Stanimir, Jones, Damien, Gers, Luke, Brahm, Rafael, Jordan, Andrés, Henning, Thomas, Kreidberg, Laura, Quirrenbach, Andreas, Reiners, Ansgar
Publikováno v:
Proceedings of SPIE; July 2024, Vol. 13096 Issue: 1 p130968E-130968E-9, 1178722p
Publikováno v:
Adaptive Optics Systems VIII.
The nonlinear curvature wavefront sensor (nlCWFS) has been shown to be a promising alternative to existing wavefront sensor designs. Theoretical studies indicate that the inherent sensitivity of this device could offer up to a factor of 10 times impr