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Gaussian Optics

Gaussian Optics

Mey Chern Loh
Copyright: © 2020 |Pages: 13
ISBN13: 9781799823810|ISBN10: 1799823814|ISBN13 Softcover: 9781799823827|EISBN13: 9781799823834
DOI: 10.4018/978-1-7998-2381-0.ch007
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MLA

Loh, Mey Chern. "Gaussian Optics." Analyzing the Physics of Radio Telescopes and Radio Astronomy, edited by Kim Ho Yeap and Kazuhiro Hirasawa, IGI Global, 2020, pp. 130-142. https://doi.org/10.4018/978-1-7998-2381-0.ch007

APA

Loh, M. C. (2020). Gaussian Optics. In K. Yeap & K. Hirasawa (Eds.), Analyzing the Physics of Radio Telescopes and Radio Astronomy (pp. 130-142). IGI Global. https://doi.org/10.4018/978-1-7998-2381-0.ch007

Chicago

Loh, Mey Chern. "Gaussian Optics." In Analyzing the Physics of Radio Telescopes and Radio Astronomy, edited by Kim Ho Yeap and Kazuhiro Hirasawa, 130-142. Hershey, PA: IGI Global, 2020. https://doi.org/10.4018/978-1-7998-2381-0.ch007

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Abstract

Analysis of Terahertz waves comes in three main forms, physical optics, geometrical optics, and Gaussian optics. Physical optics has the highest accuracy but it is time consuming when it is applied in the design of large radio telescopes. Also, it is only capable of computing radiation characteristics. Geometrical optics, on the other hand, reduces computational time significantly. But it does not give accurate results when designing telescopes which are to operate at Terahertz frequencies. Gaussian optics is a good trade-off between these two methods and it is a popular approach used in the design of large radio telescopes — particularly those which operate near/in the Terahertz band. Since it accounts for the effects of diffraction, this method produces reasonably accurate results. This chapter describes Gaussian optics, with emphasis given on its application in the design of radio telescopes.

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