All-optical switch utilizing inversion of two-level systems

Details All-optical switch utilizing inversion of two-level systems All-optical switch utilizing inversion of two-level systems

1993-02-08

1993-12-07

Hellner, Mark

Optical: systems and elements

Optical modulator

Light wave temporal modulation

257184, G02F 1015

Patent

active

052687856

ABSTRACT:
Described here is an all-optical switch having two states, one that absorbs ncident coherent optical radiation and another that amplifies incident coherent optical radiation. The state of switch is changed in response to the passage of an ultra-short coherent optical pulse when the peak field strength of the pulse is in a wide region about the effective dipole moment per unit volume, a characteristic material parameter proportional to the density and the dipole transition moment of the selected active two-level systems which are uniformly distributed with sufficient density so that there is more than one two-level system per cubic transition wavelength causing dipole-dipole interactions to be non-negligible.

REFERENCES:
patent: 4720175 (1988-01-01), Haus et al.
patent: 5047810 (1991-09-01), Chemla et al.
patent: 5119227 (1992-06-01), Dawson et al.

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