Effect of the fill factor of an annular diffraction grating on the energy distribution in the focal plane

This investigation is a continuation of a former one in which an expression was derived for a light pulse with an energy distribution given by Wien's law. The first three paragraphs are supplementary to the former paper; the rest of the investigation deals with the passage of the same pulse through a prism and its separation into the different colours in the focal plane of a telescope. The general principles according to which this must take place are, of course, known, but here the actual disturbance at every point in the focal plane is given for the first time as a definite function of the time and as a result it is possible to state how many waves there are in the trains, which the single initial pulse gives rise to in the various parts of the spectrum. §1. My general expression for the initial form of a light pulse was cos ( n + ½) θ /( x 2 + h 2 ) (2 n +1)/4 , where tan θ = x/h . I did no notice until after the former paper was communicated, that this expression is 1/Г ( n + ½) ∫ ∞ 0 e - ha cos αx α n -½ dα .

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Towards Surface Leakage Free High Fill-Factor Extended Wavelength InGaAs Focal-Plane Arrays

IEEE Journal of Quantum Electronics ◽

10.1109/jqe.2019.2947610 ◽

2019 ◽

Vol 55 (6) ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Yingjie Ma ◽

Jiaxiong Fang ◽

Shuangyan Deng ◽

Jifeng Cheng ◽

Yi Gu ◽

...

Keyword(s):

Focal Plane ◽

Fill Factor ◽

Focal Plane Arrays ◽

High Fill Factor ◽

Surface Leakage

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Energy distribution on the focal plane of a parabolic cylindrical concentrator with angular defocusings

Applied Solar Energy ◽

10.3103/s0003701x07010100 ◽

2007 ◽

Vol 43 (1) ◽

pp. 30-33

Author(s):

A. V. Vardanyan ◽

K. A. Pogosyan ◽

G. S. Aloyan ◽

Z. S. Ovsepyan

Keyword(s):

Energy Distribution ◽

Focal Plane

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Numerical Simulation for Focal Region Characterization in a New Solar Concentrator

International Journal of Nanoscience ◽

10.1142/s0219581x14600060 ◽

2014 ◽

Vol 13 (05n06) ◽

pp. 1460006

Author(s):

Leilei Wang

Keyword(s):

Energy Distribution ◽

Focal Plane ◽

Focal Spot ◽

Specular Reflection ◽

Position Error ◽

Focal Region ◽

Solar Concentrator ◽

Absolute Value ◽

Pointing Error ◽

New Type

Considering the sun light nonparallelism, Monte Carlo ray tracing method and specular reflection law are employed to simulate the effects of focal plane position error, pointing error to spot shape and energy distribution on focal plane of a new type of space solar concentrator. The results show that: with the absolute value of focal plane position error increasing, focal spot radius increases and peak energy flux value on focal plane decreases; when absolute value of focal plane position error is same, focal spot shape and energy distribution is almost the same; with pointing error increasing, the deviation of focal spot from the focal plane center increases and round focal spot becomes oval focal spot gradually. This will provide a reference for the new space solar concentrating and absorbing system design.

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