Kirby, A. K. and Love, G. D. (2004) 'Fast, large and controllable phase modulation using dual frequency liquid crystals.', Optics express., 12 (7). pp. 1470-1475.
We report on a method for high speed, large stroke phase modulation using dual frequency control of liquid crystals. Our system uses an all-electronic feedback system in order to simplify the control. We show half wave phase modulations of ~120Hz with the operating point varying over nearly the full dynamic range of the device, and demonstrate larger phase shifts (2.5 waves) at a frequency of 37Hz. For large phase shifts, the speeds are an order of magnitude faster than existing techniques.
|Keywords:||Optical devices, Liquid-crystal devices.|
|Full text:||(VoR) Version of Record|
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|Publisher Web site:||http://dx.doi.org/10.1364/OPEX.12.001470|
|Record Created:||28 Feb 2008|
|Last Modified:||10 Nov 2010 13:01|
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