Abstract

Speckle image contrasts from a fractal rough-surface object are investigated in simulation, where the image surface is conjugate to the object surface. It is observed that the Hurst exponent H of fractal roughness affects speckle contrast and statistics dramatically. For example, a strong rough surface (σh>λ) exhibits Rayleigh statistics over increasing ranges of point spread function widths as H decreases. Conceptual explanations are also presented for effects of H and the coherence factor on speckle in imaging systems.

© 2009 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Simulation method for non-Gaussian speckle in a partially coherent system

Dongyel Kang and Tom D. Milster
J. Opt. Soc. Am. A 26(9) 1954-1960 (2009)

Effect of optical aberration on Gaussian laser speckle

Dongyel Kang, Eric Clarkson, and Tom D. Milster
Opt. Express 17(5) 3084-3100 (2009)

Effect of optical aberration on Gaussian speckle in a partially coherent imaging system

Dongyel Kang and Tom D. Milster
J. Opt. Soc. Am. A 26(12) 2577-2585 (2009)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription