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ECE-1466 Modern Optics Course Notes Part 4

ECE-1466 Modern Optics Course Notes Part 4. Prof. Charles A. DiMarzio Northeastern University Spring 2002. Starting Point Maxwell’s Equations Homogeneous Medium Isotropic Medium Solution Plane Waves Transverse Fields. Eigenstates General Solution. Polarized Light. y. y. or. x. x.

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ECE-1466 Modern Optics Course Notes Part 4

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  1. ECE-1466Modern OpticsCourse NotesPart 4 Prof. Charles A. DiMarzio Northeastern University Spring 2002 Chuck DiMarzio, Northeastern University

  2. Starting Point Maxwell’s Equations Homogeneous Medium Isotropic Medium Solution Plane Waves Transverse Fields Eigenstates General Solution Polarized Light y y or x x z y E x Chuck DiMarzio, Northeastern University

  3. Dielectric Interface Oblique Incidence Scattering Material Properties Linear Birefringence Circular Birefringence, AKA Optical Activity Some Mechanisms of Interaction Chuck DiMarzio, Northeastern University

  4. Linear Polarization x E q y Chuck DiMarzio, Northeastern University

  5. Circular Polarization x E wt -y Chuck DiMarzio, Northeastern University

  6. Unpolarized Light Ex Ey Chuck DiMarzio, Northeastern University

  7. Polarizing Components Chuck DiMarzio, Northeastern University

  8. Fresnel Reflection Boundary Conditions Dnormal= Dnormal e0Enormal e0Enormal e0Etangential Dtangential= e0Etangential Dtangential Chuck DiMarzio, Northeastern University

  9. Plane of Incidence Normal & Incident Ray P-Polarization (TM) EParallel to Plane of Incidence S-Polarization (TE) E Senkrecht = Perpendicular to Plane of Incidence Polarization Labels Er Hr Hr Et Er Ht Ht Et Ei Hi Hi Ei Chuck DiMarzio, Northeastern University

  10. S-Polarization (1) Chuck DiMarzio, Northeastern University

  11. S-Polarization (2) Chuck DiMarzio, Northeastern University

  12. Fresnel Coefficient Summary Example Fresnel Reflection: Air to Glass, n=1.5 1 tp ts 0.5 rp rs 0 -0.5 -1 0 20 40 60 80 q , Angle, Degrees Chuck DiMarzio, Northeastern University

  13. 90 80 70 60 50 Angle, Degrees 40 30 20 10 1 2 3 4 n, Index of refraction Special Angles Critical Angle (medium to air) Brewster’s Angle (air to medium) Brewster’s Angle (medium to air) Chuck DiMarzio, Northeastern University

  14. Power Coefficients Fresnel Reflection: Air to Water, n=1.33 TP 0 TS -5 -10 R, T, dB RS -15 RP -20 0 20 40 60 80 q , Angle, Degrees Chuck DiMarzio, Northeastern University

  15. Fresnel Reflection: Air to Glass, n=1.5 Fresnel Reflection: Air to ZnSE in IR, n=2.4 1 1 0.8 0.8 0.6 0.6 R, T R, T 0.4 0.4 0.2 0.2 0 0 0 20 40 60 80 0 20 40 60 80 q , Angle, Degrees q , Angle, Degrees Fresnel Reflection Examples (1) Air to Glass Air to ZnSe (IR) TP TP TS TS RS RS RP RP Chuck DiMarzio, Northeastern University

  16. Fresnel Reflection: Glass, n=1.5, to Air Fresnel Reflection: Glass, n=1.5, to Air 1 200 TP 150 0.8 TS 100 RP 50 0.6 Phase, Degrees 0 R, T TS 0.4 -50 RS TP -100 RP RP RS 0.2 -150 -200 0 20 40 60 80 100 0 0 20 40 60 80 q , Angle, Degrees q , Angle, Degrees Fresnel Reflection Examples (2) Glass to Air Phase Glass to Air Amplitude Chuck DiMarzio, Northeastern University

  17. Device Applications Device Input in Eigenvectors of Device Output End Views Chuck DiMarzio, Northeastern University

  18. Wire Grid Polarizers Chuck DiMarzio, Northeastern University

  19. Polaroid H Sheets Chuck DiMarzio, Northeastern University

  20. Waveplates (1) Chuck DiMarzio, Northeastern University

  21. Waveplates (2) Chuck DiMarzio, Northeastern University

  22. E/O Modulator eipV/Vp e-ipV/Vp Chuck DiMarzio, Northeastern University

  23. Optical Activity Device Chuck DiMarzio, Northeastern University

  24. Fresnel Reflection: Glass, n=1.5, to Air 200 150 100 50 Phase, Degrees 0 45 Deg -50 -100 RP RS -150 -200 0 20 40 60 80 100 q , Angle, Degrees Fresnel Rhomb • Functions as QWP • True Phase Shift rather than Time Delay • Broadband: Limited only by material Dispersion Chuck DiMarzio, Northeastern University

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