Zobrazeno 1 - 10
of 44
pro vyhledávání: '"C. Schönbein"'
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 7:124-129
We report on the experimental determination of the different contributions to the noise current in quantum-well infrared photodetectors (QWIPs). A detailed description of the measurement set-up and experimental methods is given. The noise properties
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11010c6a19ab5e4d638f7db0654bcd1a
https://doi.org/10.1016/s1386-9477(99)00301-x
https://doi.org/10.1016/s1386-9477(99)00301-x
Autor:
Peter Koidl, Wilfried Pletschen, Wolfgang A. Cabanski, Guenter Weimann, J. Fleissner, C. Schönbein, Harald Schneider, Robert Rehm, Juergen Braunstein, Johann Ziegler, Martin Walther
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 7:101-107
System properties of focal plane array (FPA) cameras based on GaAs/AlGaAs quantum well infrared photodetectors (QWIPs) operating in the long-wavelength infrared are analyzed. Due to the limited charge storage capacity of available readout circuits, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbf49bac9db81c3eea13a775d43337a4
https://doi.org/10.1016/s1386-9477(99)00287-8
https://doi.org/10.1016/s1386-9477(99)00287-8
Publikováno v:
ResearcherID
We have studied the transport properties of electrons in asymmetric quantum well structures upon far-infrared optical excitation of carriers from the lowest subband into the continuum. Here the photocurrent consists of a coherent component originatin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d33e7592b5918347ad9dbd29730e170
https://doi.org/10.1016/s1386-9477(98)00008-3
https://doi.org/10.1016/s1386-9477(98)00008-3
Publikováno v:
Physical Review B. 57:R15096-R15099
We report on the experimental evidence of electric-field domain formation induced by the intersubband photocurrent in $n$-type $\mathrm{GaAs}/{\mathrm{Al}}_{x}{\mathrm{Ga}}_{1\ensuremath{-}x}\mathrm{As}$ multiple quantum wells. The domain structure m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bf6990b273f7d4acb31daf4ed5c4d29
https://doi.org/10.1103/physrevb.57.r15096
https://doi.org/10.1103/physrevb.57.r15096
Autor:
K. Schwarz, C. Schönbein, G. Tränkle, J. Fleissner, Harald Schneider, G. Bihlmann, S. Ehret, G. Böhm
Publikováno v:
Superlattices and Microstructures. 23:1289-1295
We have investigated the influence of the final states of bound-to-continuum transitions within the conduction band of asymmetric quantum well structures on the photocurrent. This influence manifests itself by an energy-dependent oscillation of the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab677fed96a1226b27bef0c4f64a9ead
https://doi.org/10.1006/spmi.1996.0225
https://doi.org/10.1006/spmi.1996.0225
Publikováno v:
Applied Physics Letters. 74:16-18
Standing light waves caused by the interference of incident and reflected beams lead to a spatial modulation of the electromagnetic field within the active region of a quantum well infrared photodetector (QWIP). The optical excitation—determined by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::087339942261eb1275c8aca07d68b701
https://doi.org/10.1063/1.123119
https://doi.org/10.1063/1.123119
Publikováno v:
ResearcherID
We have investigated noise currents in GaAs/AlAs/AlGaAs quantum well infrared photodetectors (QWIPs). The specific design of these detectors implies a carrier mean-free path of exactly one period of the superlattice with N=20 periods, leading to a ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62adcd1cc4b85d5cf5e7c0b2a614fdf3
https://doi.org/10.1063/1.122142
https://doi.org/10.1063/1.122142
Publikováno v:
Applied Physics Letters. 71:246-248
We have investigated a particular class of photovoltaic quantum well intersubband photodetectors. Each period of the active region in these structures consists of four zones, namely an excitation zone, a drift zone, a capture zone, and a tunneling zo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c87985cc16b58a9a0f0d1e3ef2026db9
https://doi.org/10.1063/1.119510
https://doi.org/10.1063/1.119510
Publikováno v:
Applied Physics Letters. 69:931-933
We show that the transient intersubband photocurrent in a GaAs/AlGaAs quanturn-well infrared photodetector (QWIP) consists of two dynamical components, which are associated, respectively, with the drift motion of photoexcited carriers and with the ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4af5ddad47e404ad4d2921dd521aa385
https://doi.org/10.1063/1.116947
https://doi.org/10.1063/1.116947
Publikováno v:
Applied Physics Letters. 68:1832-1834
We report on a novel class of voltage‐tunable two‐color detectors, based on a quantum‐well intersubband photodetector (QWIP) and a p‐i‐n photodiode in a p‐i‐n‐i‐n configuration. In this approach, the two constituting detector struct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9951bd0bcdfabc2ecde12effb6e72fe1
https://doi.org/10.1063/1.116028
https://doi.org/10.1063/1.116028