Side-lobeless far-field spectrum of a short pulse from a circular aperture with Gaussian form of transmittance

Han, Pin; Hwang, Hone‐Ene

doi:10.1016/j.ijleo.2008.03.012

Cited by 1 publication

(2 citation statements)

References 15 publications

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“…When the sources are coherent or the two object points are illuminated by a coherent wave, then their amplitudes rather than their irradiances add. Figure (5) shows the resultant irradiance distribution when the two sources are angularly separated such that kαω = 1.22π. Incoherent point sources were just resolved, according to Rayleigh criterion, for this angular separation.…”

Section: Resolution Of Two Coherent Sourcesmentioning

confidence: 99%

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Resolving power of optical instruments: A Tutorial

Sirohi¹

2021

AJP

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Dedicated to Professor M S Sodha for his numerous contributions to Plasma Physics, Optics and Photonics, Energy Studies and Education Management Optical instruments are used for observation and spectroscopy apart from host of many other applications. Both in observation and spectroscopy it is important to know how closely two objects, or two spectral lines can be resolved by the instruments. There had been a number of criteria of resolution: two most often used are Rayleigh criterion and Sparrow criterion. Rayleigh criterion of resolution has no mathematical support but is often used due to its simplicity. Sparrow criterion gives the lowest limit of resolution. Further in seeing, the nature of illumination of the object has profound effect on the limit of resolution. Rayleigh criterion tacitfully assumes incoherent illumination, while the Sparrow criterion can be applied to incoherent, partially coherent and coherent illuminations. Applicability of Rayleigh criterion can be extended to partially coherent and incoherent illuminations by a simple modification. The paper through the tutorial approach describes the resolution of optical instruments used for seeing and spectroscopy.

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Section: Resolution Of Two Coherent Sourcesmentioning

confidence: 99%

“…He himself has written many papers on the resolving power of spectroscopic instruments. That was the active period of research on this topic [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Resolution has been described in terms of either Rayleigh or Sparrow criteria of resolution.…”

Section: Introductionmentioning

confidence: 99%

Resolving power of optical instruments: A Tutorial

Sirohi¹

2021

AJP

View full text Add to dashboard Cite

show abstract

Side-lobeless far-field spectrum of a short pulse from a circular aperture with Gaussian form of transmittance

Cited by 1 publication

References 15 publications

Resolving power of optical instruments: A Tutorial

Resolving power of optical instruments: A Tutorial

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