Trivia Question We have all seen ‘one way’ mirrors in use on TV police shows, in which of the following are one way mirrors NOT used? (a) The “Haunted.

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Trivia Question We have all seen ‘one way’ mirrors in use on TV police shows, in which of the following are one way mirrors NOT used? (a) The “Haunted Mansion” attraction at Walt Disney World (b) In Reality TV shows (c) Marketing research (d) Interrogation rooms (e) Security Observation rooms

Trivia Question All of them!! We have all seen ‘one way’ mirrors in use on TV police shows, in which of the following are one way mirrors NOT used? (a) The “Haunted Mansion” attraction at Walt Disney World (b) In Reality TV shows (c) Marketing research (d) Interrogation rooms (e) Security Observation rooms All of them!!

How do ‘one way’ mirrors work? The cheap version (and most often used), makes use of a BRIGHT ‘interrogation’ room and a darkened ‘observation’ room. Between the two is a partially reflecting mirror (~50%). Bright room occupants see their own reflection from mirror. Dark room occupants see light from light room through partially reflecting mirror More expensive method: Mirror fabricated as ‘optical diode’ or ‘optical isolator’.

Anisotropic Media

Ellipsoid representing symmetric tensor

Normal Modes with CUBIC principle Axes Normal Modes: when a particular polarization, after passing through an optical material, is unchanged. Eg. x direction linear polarization in gives x direction linear polarization out Eg. RHC polarization in gives RHC polarization out.

Ordinary and Extra-O waves

Origin of Birefringence

Ordinary and Extraordinary waves

Chiral Molecules

Rotation by Optical Activity

Optical Isolator

Liquid Crystal Display

Linear Polarizers ‘Polaroid’ H-Sheet Wiregrid polarizer Brewster Window Polarizer

Polarizing Beamsplitters

Intensity control using half-wave plate

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