All-optical full logic unit with femtosecond switching

Reiner P. Schmid; Juergen Reif

doi:10.1117/12.456869

25 February 2002 All-optical full logic unit with femtosecond switching

Reiner P. Schmid, Juergen Reif

Proceedings Volume 4426, Second International Symposium on Laser Precision Microfabrication; (2002) https://doi.org/10.1117/12.456869
Event: Second International Symposium on Laser Precision Micromachining, 2001, Singapore, Singapore

Abstract

We report on the realization of an all-optical full logic unit switching with a response time on the order of one femtosecond. The device is based on instantaneous transient gratings induced in a thin slide of barium fluoride by up to three femtosecond laser beams. The interference pattern from every tow of the non-collinear beams is, via optical Kerr effect, translated into a transient index grating which reacts within one optical cycle on the input since the applied light frequency is far from resonance in the material. As one consequence of the grating two strong beams of self phase matched third harmonic are generated, emerging in the middle between the two transmitted fundamentals. By introducing a third femtosecond beam we are able to emulate a demultiplexer, a decoder and simple adder. Since the output consists of the third harmonic of the input beams, the system works with uniquely high contrast.

Citation Download Citation

Reiner P. Schmid and Juergen Reif "All-optical full logic unit with femtosecond switching", Proc. SPIE 4426, Second International Symposium on Laser Precision Microfabrication, (25 February 2002); https://doi.org/10.1117/12.456869

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