Quantum well avalanche multiplication initiated by 10 μm intersubband absorption and photoexcited tunneling
- 21 September 1987
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 51 (12), 934-936
- https://doi.org/10.1063/1.98806
Abstract
We have achieved avalanche gain at a wavelength of 10.3 μm in AlxGa1−xAs/GaAs quantum well superlattices. The photoelectrons are generated by resonant intersubband absorption and tunneling, and then avalanche via hot-electron impact ionization of carriers out of the quantum wells. Good agreement is obtained between a theoretical calculation of this process and our experiments.Keywords
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