Single Slit Diffraction

Single Slit Diffraction PowerPoint PPT Presentation


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Single Slit Diffraction

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1. Single Slit Diffraction Parallel rays can go straight through the slit Use Huygens wavelets and consider rays that pass at an angle. Interference occurs!

2. Single Slit Diffraction Keep looking for combinations that are either half a wavelength or a full wavelength apart

3. Single Slit Interference

4. Diffraction Grating Many slits close together gives maxima that are sharper and thinner

5. Diffraction Grating

6. Spectroscopy

7. Thin Films

8. Newton’s Rings

9. Newton’s Rings

10. Non-Glare Lenses

11. Interferometry

12. Polarization Refers to the orientation of the electric field vector. For normal light sources, the field direction is random since we have a multitude of individual atoms involved in the creation of the light Any atom’s light emission depends on the atom’s orientation and that is random

13. Polarization Some materials have a unique property of only transmitting light with a particular orientation of the electric field vector These materials are called polarizers

14. Polarization

15. Polarization

16. Polarization

17. Polarization Resolve any arbitrary electric field vector into components parallel and perpendicular to the direction of polarization of the material.

18. Polarization Split the unpolarized light into parallel and perpendicular components Only the parallel is transmitted (half the original)

19. Polarization

20. Polarization Light gets dimmer with each pass

21. Polarization Light reflecting from non-metallic surfaces tends to get polarized in the plane parallel to the surface Polaroid sunglass block rays that are horizontally polarized, and thus reduce glare from light reflected from the pavement

22. Brewster Angle

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