Extended object wavefront sensing based on the correlation spectrum phase

Research output: Contribution to journalArticle

Standard

Extended object wavefront sensing based on the correlation spectrum phase. / Knutsson, Per; Owner-Petersen, Mette; Dainty, C.

In: Optics Express, Vol. 13, No. 23, 2005, p. 9527-9536.

Research output: Contribution to journalArticle

Harvard

Knutsson, P, Owner-Petersen, M & Dainty, C 2005, 'Extended object wavefront sensing based on the correlation spectrum phase', Optics Express, vol. 13, no. 23, pp. 9527-9536.

APA

Knutsson, P., Owner-Petersen, M., & Dainty, C. (2005). Extended object wavefront sensing based on the correlation spectrum phase. Optics Express, 13(23), 9527-9536.

CBE

Knutsson P, Owner-Petersen M, Dainty C. 2005. Extended object wavefront sensing based on the correlation spectrum phase. Optics Express. 13(23):9527-9536.

MLA

Knutsson, Per, Mette Owner-Petersen and C Dainty. "Extended object wavefront sensing based on the correlation spectrum phase". Optics Express. 2005, 13(23). 9527-9536.

Vancouver

Knutsson P, Owner-Petersen M, Dainty C. Extended object wavefront sensing based on the correlation spectrum phase. Optics Express. 2005;13(23):9527-9536.

Author

Knutsson, Per ; Owner-Petersen, Mette ; Dainty, C. / Extended object wavefront sensing based on the correlation spectrum phase. In: Optics Express. 2005 ; Vol. 13, No. 23. pp. 9527-9536.

RIS

TY - JOUR

T1 - Extended object wavefront sensing based on the correlation spectrum phase

AU - Knutsson, Per

AU - Owner-Petersen, Mette

AU - Dainty, C

PY - 2005

Y1 - 2005

N2 - In this paper we investigate the performance of a Fourier based algorithm for fast subpixel shift determination of two mutually shifted images subjected to noise. The algorithm will be used for Shack-Hartmann based adaptive optics correction of images of an extended object subjected to dynamical atmospheric fluctuations. The performance of the algorithm is investigated both analytically and by Monte Carlo simulations. Good agreement is achieved in relation to how the precision of the shift estimate depends on image parameters such as contrast, photon counts and readout noise, as well as the dependence on sampling format, zero-padding and field of view. Compared to the conventional method for extended object wavefront sensing, a reduction of the computational cost is gained at a marginal expense of precision.

AB - In this paper we investigate the performance of a Fourier based algorithm for fast subpixel shift determination of two mutually shifted images subjected to noise. The algorithm will be used for Shack-Hartmann based adaptive optics correction of images of an extended object subjected to dynamical atmospheric fluctuations. The performance of the algorithm is investigated both analytically and by Monte Carlo simulations. Good agreement is achieved in relation to how the precision of the shift estimate depends on image parameters such as contrast, photon counts and readout noise, as well as the dependence on sampling format, zero-padding and field of view. Compared to the conventional method for extended object wavefront sensing, a reduction of the computational cost is gained at a marginal expense of precision.

M3 - Article

VL - 13

SP - 9527

EP - 9536

JO - Optics Express

T2 - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 23

ER -