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Electro- magnetic waves in matter. Linear media: velocity: most materials:

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Presentation on theme: "Electro- magnetic waves in matter. Linear media: velocity: most materials:"— Presentation transcript:

1 Electro- magnetic waves in matter

2 Linear media: velocity: most materials:

3 Reflection, transmission and refraction

4 Boundary conditions

5 Normal incidence

6

7 Reflection coefficient Transmission coefficient

8 Lens coating http://www.canon.com/technology/s_labo/light/003/03.html

9 Oblique incidence

10 Plane of incidence The incident, reflected and transmitted wave vectors lie in a plane, which also includes the normal to the surface. angle of incidence angle of reflection angle of refraction Law of reflection Law of refraction (Snell’s Law) Willebrord Snell, 1621

11 Total internal reflection

12 Binoculars Jewelry

13 Diamonds

14 Fiber optics

15

16 Near field optical scanning microscope Application of evanescent waves:

17 Muscle fiber

18 Intensity and polarization

19 Fresnel’s Laws TE polarization E of I, R, and T are perpendicular to the plane of incidence (B in) TM polarization E of I, R, and T are in the plane of incidence (B perpendicular)

20 Intensities

21 TM polarization Brewster’s angle

22

23 1938 Polaroid film

24 Polarization measurementsCrossed polarizers

25

26 Egg nebula

27 Materials under stress rotate the polarization plane.


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