InGaAs/InAlAs multiquantum well intersubband absorption at a wavelength of λ=4.4 μm

Levine, B. F.; Cho, A. Y.; Walker, J.; Malik, R. J.; Kleinman, D. A.; Sivco, D. L.
May 1988
Applied Physics Letters;5/2/1988, Vol. 52 Issue 18, p1481
Academic Journal
We report, for the first time, intersubband absorption experiments in doped InGaAs/InAlAs multiquantum well superlattices and observe a resonance peak at a wavelength of λ=4.4 μm which is in good agreement with theory. This material system may be useful for detectors in the λ=3–5 μm spectral region.


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