Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Leonard Bergstein"'
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2005, Iss 10, Pp 1617-1623 (2005)
Laser beams with extended depth of focus have many practical applications, such as scanning printed bar codes. Previous work has concentrated on synthesizing such beams by approximating the nondiffracting Bessel beam solution to the wave equation. In
Externí odkaz:
https://doaj.org/article/2b563bd6df1c4c7896512ccfef168bb0
Publikováno v:
ROMOPTO 2000: Sixth Conference on Optics.
Laser beams used for bar-code scanning exhibit speckle noise generated by the roughness of the surface on which bar-codes are printed. Statistical properties of a photodetector signal that integrates a time-varying speckle pattern falling on its aper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::076b892194dd8a1f60af7ef5c8dbdafa
https://doi.org/10.1117/12.432867
https://doi.org/10.1117/12.432867
Publikováno v:
Applied Optics. 42:161
Laser-based flying-spot scanners are strongly affected by speckle that is intrinsic to coherent illumination of diffusing targets. In such systems information is usually extracted by processing the derivative of a photodetector signal that results fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab5ee0ce6869e8b9f62092d8bcd6ecd2
https://doi.org/10.1364/ao.42.000161
https://doi.org/10.1364/ao.42.000161
Publikováno v:
EURASIP Journal on Applied Signal Processing; Jul2005, Vol. 2005 Issue 10, p1617-1623, 7p
Autor:
Leonard Bergstein, Gerard A. Alphonse
Publikováno v:
Journal of Applied Physics. 38:5097-5103
The Ginzburg‐Landau equations are solved for thin superconductors in the presence of arbitrary tangential magnetic fields and yield an essentially position‐independent order parameter if the superconductor contains no vortices. The magnetic trans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::411ed3ff642efa1477339082cbe9b758
https://doi.org/10.1063/1.1709283
https://doi.org/10.1063/1.1709283
Autor:
Leonard Bergstein, Thomas H. zachos
Publikováno v:
Journal of the Optical Society of America. 61:1477
A plane aperture is considered radiating in a uniaxially anisotropic medium that is otherwise assumed to be linear and homogeneous. A given but arbitrary aperture field distribution can be represented as the superposition of a transverse electric (TE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ee918a28890d14d4a77f5286ff00b91
https://doi.org/10.1364/josa.61.001477
https://doi.org/10.1364/josa.61.001477
Autor:
Leonard Bergstein
Publikováno v:
Journal of the Optical Society of America. 48:154
A general theory of optically compensated varifocal systems is discussed in this paper. It is shown that n alternately stationary and relatively fixed (to each other) movable lens components can be arranged to produce an optical system which will hav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf3edfa963d25ce07715b89bb1e831c8
https://doi.org/10.1364/josa.48.000154
https://doi.org/10.1364/josa.48.000154
Autor:
Leonard Bergstein, Lloyd Motz
Publikováno v:
Journal of the Optical Society of America. 52:363
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46026aef9adfdc98634a0486beed6b27
https://doi.org/10.1364/josa.52.000363
https://doi.org/10.1364/josa.52.000363
Autor:
Leonard Bergstein
Publikováno v:
Applied Optics. 7:495
A method is developed for the approximate determination of the normal modes of stable and unstable optical resonators and the associated resonant frequencies and power losses. The method is based on replacing the finite integration limits in the inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e993fe9fe0987b9acbca2194e41b80d
https://doi.org/10.1364/ao.7.000495
https://doi.org/10.1364/ao.7.000495
Autor:
Lloyd Motz, Leonard Bergstein
Publikováno v:
Journal of the Optical Society of America. 47:579
Formulas are developed for calculating the Seidel partial coefficients for a lens system as functions of changes in the parameters of the system (bendings) to all orders of accuracy within the third-order theory. These formulas are used to obtain a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a82f2fa3ccf511743cb5ddb187496443
https://doi.org/10.1364/josa.47.000579
https://doi.org/10.1364/josa.47.000579