Tunneling lifetime broadening of the quantum well intersubband photoconductivity spectrum
- 18 July 1988
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 53 (3) , 231-233
- https://doi.org/10.1063/1.100391
Abstract
We have measured, for the first time, the continuous infrared (λ∼10 μm) photoconductivity spectrum, for an intersubband absorption photoexcited tunneling quantum well detector. The line shape is broadened and asymmetrical with respect to the zero-bias Lorentzian absorption spectrum. We show that this is a result of the uncertainty principle lifetime broadening due to the rapid tunneling escape of the photoexcited electrons.Keywords
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