Optical transistor

Details Optical transistor Optical transistor

1993-02-25

1996-03-26

Epps, Georgia Y.

Optical: systems and elements

Optical computing without diffraction

Logic gate

359243, 359244, G02F 300

Patent

active

055025854

ABSTRACT:
The present invention relates to an optical transistor which uses photo-excited carriers to modulate the interaction between the plasma oscillation of free carriers and input electromagnetic radiation to change reflectivity by a large margin, thereby realizing high-speed light modulation, light switching and light detection. The device functions like a transistor, but uses a light beam instead of an electric current. The invention also provides implementation schemes for different devices using optical transistors such as a light power modulator, a combined detector, a reflective or transmissive light switch and a spectral scanner.

REFERENCES:
"New Light Modulation Device: Optical Transistor", Dingrong Qian, Optical Engineering, Mar. 1993, vol. 32, No. 3, pp. 542-546.
"Plasma Edge and its Application to Infrared Measurement and Detection", Dingrong Qian, Journal of Applied Physics, Sep. 1, 1993, vol. 74, No. 5, pp. 3061-3064.

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