Method and apparatus for modulating light using semiconductor el

Details Method and apparatus for modulating light using semiconductor el Method and apparatus for modulating light using semiconductor el

1991-07-02

1993-07-20

Dzierzynski, Paul M.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359252, 257 21, H01L 2714

Patent

active

052298787

ABSTRACT:
An optical modulation apparatus includes a semiconductor element having a quantum well structure, a unit for applying an electric field to the quantum well structure of the semiconductor element, a unit for supplying polarized probe light to the semiconductor element, the probe light emerging from the semiconductor element such that a polarization state thereof is changed by an electrooptical effect in the quantum well structure, a unit for causing the semiconductor element to receive pump light which causes virtual charge excitation in the quantum well structure, the virtual charge excitation screening the electric field applied to the quantum well structure, and a polarizer for converting a change in polarization state of the light emerging from the semiconductor element into a change in intensity.

REFERENCES:
patent: 3470375 (1969-09-01), Chang
"New Photorefractive Effect in Graded-Gap Superlattices" by S. E. Ralph et al., Physical Review Letters, vol. 63, No. 20, Nov. 13, 1989, pp. 2272-2275.
"Quantum Well Structure" by M. Yamanishi, Applied Physics, vol. 58, No. 2, 1988, pp. 1698-1707.
"Ultrafast Optical Nonlinearity by Virtual Charge Polarization in DC-Biased Quantum Well Structures" by M. Yamanishi et al., IEEE Journal of Quantum Electronics, vol. 24, No. 2, Feb. 1988, pp. 325-331.

Affiliated with

Also associated with

Rating

Method and apparatus for modulating light using semiconductor el does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for modulating light using semiconductor el, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for modulating light using semiconductor el will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1765095