Quantum-well optoelectronic modulators in high magnetic field: A technological issue for the operation in particle accelerators
Abstract
We have investigated the effect of a high magnetic field on the operation of an infrared electro-optic modulator constituted of In 0.10Ga 0.90As/GaAs quantum wells grown by metal-organic chemical vapor deposition. The magnetic field changes the working wavelength and the switching threshold of the device due to the diamagnetic blue-shift of the exciton ground-level energy and to the enhancement of the exciton oscillator strength, respectively. This is a consequence of the compression of the exciton wave function induced by the magnetic field.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- February 1997
- DOI:
- 10.1016/S0168-9002(97)00072-7
- Bibcode:
- 1997NIMPA.390..237G