13 October 1995 Bifrequency pendulum on a rotary platform to teach optical birefringence and liquid crystalline displays
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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.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. J. Soileau, 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); doi: 10.1117/12.224054; https://doi.org/10.1117/12.224054
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KEYWORDS
Polarization

Liquid crystals

LCDs

Birefringence

Crystals

Liquids

Superposition

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