Polarization
,• Polarization of waves, Polarization of light, Representation of PPL,UPL &
partially polarized light
• Production of PPL by
i) Reflection
ii) Refraction(pile of plates)
iii) Selective absorption (dichroism)
iv) Double refraction
• Law of Malus
• Huygen’s theory of double refraction
• Retardation plates, QWP, HWP, optical activity, specific rotation
• Applications
, Important terms
➢ Unpolarized light:
A light wave that is vibrating in all possible directions perpendicular to the direction of
propogation is called unpolarised light
➢ Polarized light:
A light wave that is vibrating in only one direction is called polarized light
➢ Polarization:
The process of transforming unpolarised light into polarized light is called Polarization
➢ Longitudinal waves:
Vibration of particles back and forth in the direction of propagation of the wave
➢ Transverse waves:
Vibration of particles up and down perpendicular to the direction of propagation of the
wave
, How Unpolarised light is converted into Polarized light?
,• Polarization of waves, Polarization of light, Representation of PPL,UPL &
partially polarized light
• Production of PPL by
i) Reflection
ii) Refraction(pile of plates)
iii) Selective absorption (dichroism)
iv) Double refraction
• Law of Malus
• Huygen’s theory of double refraction
• Retardation plates, QWP, HWP, optical activity, specific rotation
• Applications
, Important terms
➢ Unpolarized light:
A light wave that is vibrating in all possible directions perpendicular to the direction of
propogation is called unpolarised light
➢ Polarized light:
A light wave that is vibrating in only one direction is called polarized light
➢ Polarization:
The process of transforming unpolarised light into polarized light is called Polarization
➢ Longitudinal waves:
Vibration of particles back and forth in the direction of propagation of the wave
➢ Transverse waves:
Vibration of particles up and down perpendicular to the direction of propagation of the
wave
, How Unpolarised light is converted into Polarized light?
