Bifrequency pendulum on a rotary platform to teach optical birefringence and liquid crystalline displays

M. J. Soileau; Boris Ya. Zeldovich

doi:10.1117/12.224054

13 October 1995 Bifrequency pendulum on a rotary platform to teach optical birefringence and liquid crystalline displays

M. J. Soileau, Boris Ya. Zeldovich

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Proceedings Volume 2525, 1995 International Conference on Education in Optics; (1995) https://doi.org/10.1117/12.224054
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Bifrequency pendulum on a rotary platform was tested and used for several years as a tool to teach various optical phenomena, mostly connected with the polarization of light waves. The following optical topics have found their mechanical analogs: linearity and superposition; damping; isotropy versus anisotropy; birefringence, uniaxial crystals; adiabatic following versus abrupt changes; liquid crystalline displays for watches, based on a twisted nematic cell; quantum-mechanical level anti-crossing; center-symmetric ((chi) ⁽³)) nonlinearity and self- rotation of polarization ellipse; angular momentum conservation; non- center-symmetric ((chi) ⁽²)) nonlinearity and second harmonic generation. This pendulum continues to serve as a source of ideas for new optical devices.

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M. J. Soileau and Boris Ya. Zeldovich "Bifrequency pendulum on a rotary platform to teach optical birefringence and liquid crystalline displays", Proc. SPIE 2525, 1995 International Conference on Education in Optics, (13 October 1995); https://doi.org/10.1117/12.224054

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KEYWORDS

Polarization

Liquid crystals

LCDs

Birefringence

Crystals

Liquids

Superposition

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