1. Polarization of light

2. In electrodynamics, polarization is the property of electromagnetic wave, such as light, that describes the direction of the transverse Electric field E B k

4. For Linearly polarized light

5. x x y y y y x x

6. Right circularly polarized light Circularly polarized light

7. Time  /4  t=0  t=  /4  t=  /2  t=3  /4 Reference axis x y E0E0 For kz=  /4

9. Left circularly polarized light

10. Elliptical polarized light

11. 

13. State of Polarization Plane polarized light : P state Right circularly polarized light : R state Left circularly polarized light : L state Elliptically polarized light : E state

14. Natural Light An ordinary light source consists of a very large number of randomly oriented atomic emitters, which radiates a polarized wavetrain for roughly 10 -8 sec.

15. Completely polarized Completely unpolarized Partially polarized Degree of polarization

16. Malus’s law

17. Unpolarized light

18. Malus’s law

19. Polarizers Selective absorption or dichorism Double refraction or birefringes Reflection Scattering

20. Polarization by scattering

21. Scattering of polarized light by a molecule

22. Scattering of unpolarized light by a molecule

23. Why sky looks blue

24. Earth A B C Blue Sky

25. Rayleigh scattering RedOrangeYellowGreenBlueViolet 122.53610

26. White Sun in Blue Sky

27. Red Sunset

28. Dust layer Earth A B C D

29. Yellow Sky

30. 1. Optics Author: Eugene Hecht Class no. 535 HEC/O Central library IIT KGP 2. Fundamental of Optics Author : Jenkins and White Class no. Central library IIT KGP