Tunable infrared modulator and switch using Stark shift in step quantum wells
- 1 May 1990
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Electron Device Letters
- Vol. 11 (5), 227-229
- https://doi.org/10.1109/55.55258
Abstract
A tunable infrared modulator and/or switch using intersubband Stark shift in a step quantum well is discussed. The device utilizes the intersubband absorption and the large change of separation between energy levels in the step quantum well under an applied electric field. The incident infrared beam on the device is either absorbed or transmitted depending on the energy separation of the levels, and thus the modulation can be achieved by adjusting the energy levels with an applied electric field. The extremely short lifetime of the intersubband transition makes this modulator suitable for application in high-speed long-wavelength optical communications.Keywords
This publication has 10 references indexed in Scilit:
- Large Stark shifts of the local to global state intersubband transitions in step quantum wellsApplied Physics Letters, 1990
- Observation of large oscillator strengths for both 1→2 and 1→3 intersubband transitions of step quantum wellsApplied Physics Letters, 1990
- Large Stark effects for transitions from local states to global states in quantum well structuresIEEE Journal of Quantum Electronics, 1989
- Bound-to-extended state absorption GaAs superlattice transport infrared detectorsJournal of Applied Physics, 1988
- Optical saturation of intersubband absorption in GaAs-AlxGa1−xAs quantum wellsApplied Physics Letters, 1988
- Direct observation of intersubband relaxation in narrow multiple quantum well structuresSolid-State Electronics, 1988
- New 10 μm infrared detector using intersubband absorption in resonant tunneling GaAlAs superlatticesApplied Physics Letters, 1987
- Observation of Stark shifts in quantum well intersubband transitionsApplied Physics Letters, 1987
- First observation of an extremely large-dipole infrared transition within the conduction band of a GaAs quantum wellApplied Physics Letters, 1985
- Issues In Single-Mode Fiber StandardizationPublished by SPIE-Intl Soc Optical Eng ,1984