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Proceedings Paper

Development Of Materials For Nonlinear Optical Information Processing Devices
Author(s): Andrew C. Walker; Brian S. Wherrett; S. Desmond Smith
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Paper Abstract

Research directed at two-dimensional optical information processing requires large arrays of binary logic elements with moderate power demand. To minimise power consumption intermediate switch times of ≤ 1 μs would appear to be optimum. A short-term target is to develop a 104 element array of such switches with ≤ 1 watt power consumption. This puts specific demands on the nonlinear materials being exploited. For example, those devices based on optoelectronic nonlinearities need high quality material with long carrier lifetimes. A novel time-resolved photoluminescence microscope spectrometer has been developed for measuring such lifetimes. The alternative nonlinear interference filter (NLIF) devices, based on optothermal nonlinearities, also look promising in this context. Because of the need for high quality structurally stable thin-film material, a new UHV molecular beam deposition (MBD) facility has been set up to permit production of low damage threshold, stable dielectric layers. Good thickness uniformity has been demonstrated over large, 100 mm diameter, substrates.

Paper Details

Date Published: 22 December 1989
PDF: 4 pages
Proc. SPIE 1127, Nonlinear Optical Materials II, (22 December 1989); doi: 10.1117/12.961392
Show Author Affiliations
Andrew C. Walker, Heriot-Watt University (Scotland)
Brian S. Wherrett, Heriot-Watt University (Scotland)
S. Desmond Smith, Heriot-Watt University (Scotland)


Published in SPIE Proceedings Vol. 1127:
Nonlinear Optical Materials II

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