UNIT 2/LECTURE 11 Concept of polarized [RGPV/Dec2011/(4)] Unpolarized light: The ordinary light is also called unpolarized light, consist of very large number of vibrations in all planes with equal probability at right angles to the direction of propagation. Linearly (Plane), circularly and elliptically polarized light The light which has acquired the property of one sidedness is called polarized light. When the vibrations are confined along a single direction at right angle to the direction of propagation of light, then the light is called plane polarized light. Light is an electromagnetic that vibrates at very high speed back and forth as it moves. Individual light waves have their own wavelength as well as angle of vibration, which can range through a full of 360°. The angle of vibration of a light wave is defined by its electric and magnetic components (vectors) that are perpendicular to each other and to the direction of the wave propagation. Ordinary visible light is unpolarized, i.e. it is composed of many different waves vibrating in all directions. A plane electromagnetic wave is said to be linearly polarized. Circularly polarized light consists of two perpendicular electromagnetic plane waves of equal amplitude and 90° difference in phase. Circularly polarized light Elliptically polarized light consists of two perpendicular waves of unequal amplitude which differ in phase by 90° Elliptically Polarized light Brewsters Law : [RGPV/JUNE2013 (4)]
UNIT 2/LECTURE 11 Concept of polarized [RGPV/Dec2011/(4)] Unpolarized light: The ordinary light is also called unpolarized light, consist of very large number of vibrations in all planes with equal probability at right angles to the direction of propagation. Linearly (Plane), circularly and elliptically polarized light The light which has acquired the property of one sidedness is called polarized light. When the vibrations are confined along a single direction at right angle to the direction of propagation of light, then the light is called plane polarized light. Light is an electromagnetic that vibrates at very high speed back and forth as it moves. Individual light waves have their own wavelength as well as angle of vibration, which can range through a full of 360°. The angle of vibration of a light wave is defined by its electric and magnetic components (vectors) that are perpendicular to each other and to the direction of the wave propagation. Ordinary visible light is unpolarized, i.e. it is composed of many different waves vibrating in all directions. A plane electromagnetic wave is said to be linearly polarized. Circularly polarized light consists of two perpendicular electromagnetic plane waves of equal amplitude and 90° difference in phase. Circularly polarized light Elliptically polarized light consists of two perpendicular waves of unequal amplitude which differ in phase by 90° Elliptically Polarized light Brewsters Law : [RGPV/JUNE2013 (4)]
be-201-engineering-physics-unit-2.docx