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PC20312 Wave Optics

PC20312 Wave Optics. Section 1: Electromagnetism and Waves. Electromagnetic spectru m. André-Marie Ampère (1775-1836 ). Carl Friedrich Gauss 1777-1855. Images from Wikipedia. Michael Faraday 1791-1867. James Clerk Maxwell 1831-1879. Images from Wikipedia. E. B. k.

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PC20312 Wave Optics

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  1. PC20312 Wave Optics Section 1: Electromagnetism and Waves

  2. Electromagnetic spectrum

  3. André-Marie Ampère (1775-1836 ) Carl Friedrich Gauss 1777-1855 Images from Wikipedia

  4. Michael Faraday 1791-1867 James Clerk Maxwell 1831-1879 Images from Wikipedia

  5. E B k Image adapted from Nick Strobel's Astronomy notes at www.astronomynotes.com

  6. John Henry Poynting (1852-1914) S = -1E× B The Poynting vector is where a beam of light is pointing. Image from Wikipedia

  7. Plane wavefronts Planar surfaces of constant phase k E = E0 exp[i(kr-wt)] Motion in +k direction

  8. Plane wavefronts Planar surfaces of constant phase k E = E0 exp[i(kr+wt)] Motion in -k direction

  9. Pierre de Fermat – 1608-72 Christiaan Huygens – 1629-95 Images from Wikipedia

  10. Huygens’ wavelets Click to Huygens’ wavelets demo Or go to http://www.acoustics.salford.ac.uk/feschools/waves/diffract3.htm

  11. Fig 1.1 Snell’s Law by Fermat Image courtesy of A. Pedlar

  12. P • Tutorial problem: • Write optical path length, L, between S and P as function of x • Find • i = r when S h2 h1 i r x l - x l Fig 1.2 Law of reflection by Fermat

  13. Fig 1.3 Refraction at a spherical surface A lo li  S C P R si So

  14. S3 P2 P3 Imaging with a curved surface S1 P1 C S2

  15. Fig 1.4 Imaging with a lens Image formed by 1st surface acts as a virtual object for 2nd surface n1 n1 n2 S P P' Si,2 So,2 d So,1 Si,1

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