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1.	Hoglund, L, et al. (author) Selective optical doping to predict the performance and reveal the origin of photocurrent peaks in quantum dots-in-a-well infrared photodetectors 2009 In: INFRARED PHYSICS and TECHNOLOGY. - Exeter : Elsevier BV. - 1350-4495 .- 1879-0275. ; 52:6, s. 272-275 Journal article (peer-reviewed)abstract Resonant optical pumping across the band gap was used as artificial doping in InAs/In0.15Ga0.85As/GaAs quantum dots-in-a-well infrared photodetectors. Through efficient filling of the quantum dot energy levels by simultaneous optical pumping into the ground states and the excited states of the quantum dots, the response was increased by a factor of 10. Low temperature photocurrent peaks observed at 120 and 148 meV were identified as intersubband transitions emanating from the quantum dot ground state and the quantum dot excited state, respectively by a selective increase of the electron population in the different quantum dot energy levels.
2.	Höglund, Linda, 1974-, et al. (author) Optical pumping as artificial doping in quantum dots-in-a-well infrared photodetectors 2009 In: Applied Physics Letters. - New York : AIP Publishing. - 0003-6951 .- 1077-3118. ; 94:5, s. 053503- Journal article (peer-reviewed)abstract Resonant optical pumping across the band gap was used as artificial doping in InAs/In0.15Ga0.85As/GaAs quantum dots-in-a-well infrared photodetectors. By selectively increasing the electron population in the different quantum dot energy levels, the low temperature photocurrent peaks observed at 120 and 148 meV, could be identified as intersubband transitions emanating from the quantum dot ground state and the quantum dot excited state, respectively. With efficient filling of the quantum dot energy levels through simultaneous optical pumping into the ground states and the excited states of the quantum dots, the response was increased by a factor of 10.

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Type of publication: journal article (2)

Type of content: peer-reviewed (2)

Author/Editor: Wang, Q. (2); Pettersson, Håkan (2); Holtz, Per-Olof (2); Almqvist, S (2); Andersson, J. Y. (2); Asplund, C. (2); show more...; Malm, H. (2); Petrini, E (2); Hoglund, L. (1); Höglund, Linda, 1974 ... (1); show less...

University: Halmstad University (2)Undo refine; Linköping University (2); Lund University (1)

Language: English (2)

Research subject (UKÄ/SCB): Natural sciences (2); Engineering and Technology (1)

Year: 2009 (2)Undo refine

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