Optical device with an asymmetric dual quantum well structure

Details Optical device with an asymmetric dual quantum well structure Optical device with an asymmetric dual quantum well structure

1995-09-28

1996-10-29

Jackson, Jr., Jerome

Active solid-state devices (e.g., transistors, solid-state diode

Thin active physical layer which is

Heterojunction

359248, 257184, 257 25, H01L 29205, H01L 310304

Patent

active

055699340

ABSTRACT:
An optical device includes an asymmetric dual quantum well (ADQW) structure which is comprised of a plurality (at least two) of different semiconductor quantum well layers coupled to each other. In the ADQW structure, the width of a deeper quantum well layer having a narrower band gap is made narrower than that of a less deeper quantum well layer having a wider band gap such that the shift of an exciton wavelength is scarcely caused due to the quantum confined Stark effect by the application of an electric field in a predetermined range. As a result, only a refractive index of the ADQW structure is changed, but an absorption factor is scarcely changed for a given range of wavelength by the application of the electric field. Further, there is provided a member for applying an electric field to the asymmetric dual quantum well structure.

REFERENCES:
patent: 4122407 (1978-10-01), Van Vechten
patent: 4727341 (1988-02-01), Nishi et al.
patent: 4884119 (1989-11-01), Miller
patent: 5019519 (1991-05-01), Tanaka et al.
patent: 5032885 (1991-07-01), Shiga
patent: 5103455 (1992-04-01), Eichen
J. Lee, et al., "Excitonic spectra of asymmetric, coupled double quantum wells in electric fields," Physical Review B, vol. 39, No. 14, May 1989, pp. 10133-10143.
K. W. Steijn, et al., "Electroabsorption and electrorefraction in GaAs/AlGaAs waveguides containing asymmetric coupled quantum wells," Applied Physics Letters, vol. 55, No. 4, Jul. 4, 1989, pp. 383-385.

Affiliated with

Also associated with

Rating

Optical device with an asymmetric dual quantum well structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical device with an asymmetric dual quantum well structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical device with an asymmetric dual quantum well structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1787704