Intersubband transitions in quantum wells
WebAug 1, 1994 · A double‐resonance spectroscopy of both interband and intersubband transitions of the quantum wells is presented. The intersubband resonance is found at 9.56 μm. An AlGaAs laser diode is used ... WebApr 14, 2024 · In this paper, we investigate the electronic and optical properties of an electron in both symmetric and asymmetric double quantum wells that consist of a harmonic potential with an internal Gaussian barrier under a nonresonant intense laser field. The electronic structure was obtained by using the two-dimensional diagonalization …
Intersubband transitions in quantum wells
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WebApr 3, 1995 · Intersubband optical resonances in InAs/AlSb quantum wells have been studied in the Voigt configuration. Both spin-conserving and spin-flip transitions in the midinfrared spectral range were observed simultaneously. We demonstrate that the in-plane magnetic field mediates the spin-conserving transitions, whereas the bulk inversion … WebIntersubband transitions in quantum wells have attracted tremendous attention in recent years, mainly due to the promise of applications in the mid and far-infrared regions (2--20 mum). Many of the papers presented in Quantum Well Intersubband Transition Physics and Devices are on the basic linear intersubband transition processes, detector ...
WebMay 13, 2008 · Intersubband transitions in Zn O ∕ Mg Zn O multiple quantum wells (MQWs) are investigated by a photocurrent spectroscopy. Photocurrent peaks are observed in the energy range from 300 to 400 meV and shifted to … WebApr 1, 2024 · Theoretical understanding of the optical properties of quantum wells is of great importance from both basic and technological research. The optical properties related to intersubband transitions (ISBT) within the conduction band of quantum wells have attracted considerable attention during the last years due to the large values of dipole …
WebSep 1, 2013 · A study of intersubband transitions in quantum well infrared detectors working at high temperatures has been reported. This study allows a greater tunability in … WebOn the contrary, intersubband transitions (ISBT) are very sensitive to the exact potential profile and transitions have been observed at wavelengths between lμm and 100μm. In …
Websubband transitions in ZnO/Mg xZn 1− O asymmetric coupled quantum wells are observed on a nonpolar m plane ZnO substrate. Two absorption peaks are observed in the energy range from approximately 250 meV to approximately 410 meV at room temperature, unambiguously demonstrating the interwell cou-pling in the asymmetric coupled …
WebJan 1, 1995 · Abstract. In this paper, the current status of intersubband lasing in quantum wells is briefly reviewed, and the physical features related to intersubband infrared … cwds child welfareWebMay 13, 2008 · Intersubband transitions in Zn O ∕ Mg Zn O multiple quantum wells (MQWs) are investigated by a photocurrent spectroscopy. Photocurrent peaks are … cheap foldable tumbling matWebApr 1, 2014 · We theoretically analyze the second harmonic generation capacity of two-dimensional periodic metamaterials comprising sub-wavelength resonators strongly coupled to intersubband transitions in quantum wells (QWs) at mid-infrared frequencies. The metamaterial is designed to support a fundamental resonance at ∼30 … cheap foldable room dividersWebSep 1, 2013 · A study of intersubband transitions in quantum well infrared detectors working at high temperatures has been reported. This study allows a greater tunability in the device designs, with the ability to control the peak wavelength, the absorption coefficient, the dark current, the quantum efficiency and the detectivity of the modeled structure … cwd sfs15p-wWebSep 15, 1994 · In this work, optical intersubband transitions in conduction-band quantum wells have been reexamined in the multiband scheme. A generalized theory, with emphasis on the selection rules for the in-plane polarization, is developed in Kane’s k⋅P formalism. By taking into account the interband couplings, it is shown that the optical … cheap fold away chairsWebApr 11, 2024 · The studies of the interband electron transition energy in multiple Hg 1-x Cd x Te/Hg 1-y Cd y Te quantum wells (MQWs) at room temperature were carried out. The MQWs were grown on the (013) GaAs substrate by molecular beam epitaxy, with the layer composition and thickness being measured by the in-situ ellipsometric parameters … cwd se32WebSep 12, 2024 · Intersubband transitions in n-doped multi-quantum-well semiconductor heterostructures make it possible to engineer one of the largest known nonlinear optical responses in condensed matter systems ... cheap foldable sleeping cots for camping