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301–350 von 393 Ergebnissen
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    Self-organized iron silicide nano dots on silicon [001] substrate

    Chou, L.J. / Chuen, Y.L. | IEEE | 2003
    disilicide quantum dots have been successfully grown by a UHV electron gun evaporation system with vacuum level better that 10/sup -9/ torr, using ...

    New laser and detector structures for mid-infrared

    Joullie, A. / Christol, P. / Rodriguez, J.B. et al. | IEEE | 2003
    systems based on type-II InAs/GaSb superlattices or InSb/GaSb quantum dots. ...

    Temperature characteristics of long-wavelength quantum dash lasers on [110] and [111]A InP

    Zuo, Z. / Wang, R.H. / Newell, T.C. et al. | IEEE | 2003
    This study reports on the fabrication and lasing characteristics of InAs quantum dot (QD) lasers on GaAs substrates grown by metalorganic ...

    Diode-pumped Nd:YVO/sub 4/ 1.3 /spl mu/m laser passively Q-switched with the PbS-doped glass

    Savitski, V.G. / Malyarevich, A.M. / Yumashev, K.V. et al. | IEEE | 2003
    In this paper, we present a silicate glass doped with PbS-quantum dots (QDs) as new saturable absorber (SA) for Q-switching of a diode ...

    Conference on Lasers and Electro-Optics (CLEO) (IEEE Cat. No.CH37419-TBR)

    IEEE | 2003
    solitons; quantum dot lasers; fusion laser engineering; photonic crystal lasers; modulation formats and clock recovery; optical MEMS; fluorescence ...

    Comparison of temperature dependent electroluminescence of InGaN/GaN and AlGaInP based LEDs

    Liang, H. / Yu, L.S. / Qi, Y.D. et al. | IEEE | 2003
    model of quantum dot clusters in the InGaN/GaN pseudo-quantum wells, with a small potential barrier at the boundary of the quantum dots. ...

    CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671)

    IEEE | 2003
    ; quantum dot physics; waveguide devices; femtosecond laser processing; microfabrication and microsystem; organic light emitting diode; optical ...

    High speed quantum dot lasers

    Bhattacharya, P. / Ghosh, S. / Wu, Z.-K. et al. | IEEE | 2002
    Self-organized quantum dot lasers, grown by MBE or MOVPE, have demonstrated superior characteristics such as large differential gain, ultra ...

    Spin polarized quantum dot light emitters

    Bhattacharya, P. / Ghosh, S. | IEEE | 2002
    Summary form only given. In this paper, we describe the growth of (In,Mn)As self-organized quantum dots, or "diluted magnetic quantum dots ...

    Normal-incidence quantum dot infrared photodetectors

    Zhonghui Chen, / Zhengmao Ye, / Eui-Tae Kim, et al. | IEEE | 2002
    ) based on epitaxial InAs/InAlGaAs quantum dots. ...

    Optimization of InGaAs quantum dots for optoelectronic applications

    Ruifei Duan, / Baoqiang Wang, / Zhanping Zhu, et al. | IEEE | 2002
    Quantum dot infrared photodetectors (QDIP) are at the center of research interest nowadays. However, the real QDIP is inferior to those ...

    Interdiffusion in InGaAs quantum dots by ion implantation

    Lever, P. / Tan, H.H. / Reece, P. et al. | IEEE | 2002
    Implantation induced interdiffusion of InGaAs quantum dots has been carried out using hydrogen and arsenic ions. Large energy shifts and ...

    Self-sustained Q-switching in InGaAs quantum dot lasers

    Matthews, D.R. / Summers, H.D. / Smowton, P.M. et al. | IEEE | 2002
    We investigate the performance of wide-band InGaAs quantum dot lasers operated in a passively Q-switched mode via the use of saturable ...

    Ultrafast optical signal processing using semiconductor quantum dot amplifiers

    Berg, T.W. / Mork, J. | IEEE | 2002
    The linear and nonlinear properties of quantum dot amplifiers are discussed on the basis of an extensive theoretical model. These devices ...

    1300 nm on gallium arsenide: quantum dots vs GaInNAs

    Fiore, A. / Markus, A. / Chen, J.X. et al. | IEEE | 2002
    quantum dots (QDs). By directly comparing the radiative properties of identical structures comprising QDs and GaInNAs QWs, we evidence the ...

    Growth and spectroscopy of II-VI CdSe quantum dots

    Cavenett, B.C. / Tang, X. / Bradford, C. et al. | IEEE | 2002
    In this paper we review the recent progress in the growth and spectroscopy of CdSe quantum dots. In particular, atomic layer epitaxy (ALE ...

    Absence of filamentation in quantum-dot lasers. Theory and experiment

    Chow, W.W. / Schneider, H.C. / Pearce, E.J. et al. | IEEE | 2002
    We theoretically and experimentally investigate the lateral mode behavior of quantum-dot lasers, and demonstrate the absence of ...

    High bandwidth modulation of multiple contact 1.3 micron quantum dot lasers

    Wonfor, A. / Tan, K.T. / Ribbat, C. et al. | IEEE | 2002
    By forming twin contacts on a 1300 nm quantum dot laser, a small signal modulation bandwidth of 4.6 GHz is achieved. This bandwidth value ...

    Cavity solitons and self organized patterns in semiconductor quantum dot microcavities

    Maggipinto, T. / Perrini, I.M. / Brambilla, M. et al. | IEEE | 2002
    Summary form only given. We propose to use InAs Quantum Dots (QD), embedded in GaAs, as a new active material for pattern and localized ...

    Growth of InGaAs quantum dots by metal organic chemical vapour deposition

    Lever, P. / Tan, H.H. / Jagadish, C. | IEEE | 2002
    In/sub 0.5/Ga/sub 0.5/As quantum dots have been grown by metal-organic chemical vapour deposition (MOCVD). The size and density of these ...

    Differential-gain damping in quantum dot lasers due to wetting layer states

    Matthews, D.R. / Summers, H.D. / Smowton, P.M. et al. | IEEE | 2002
    . To investigate this effect experimentally, we have measured the modal gain as a function of injection current on a set of InGaAs quantum dot ...

    Strain relaxation in rapid thermally annealed InAs/GaAs quantum dot infrared photodetectors

    Stewart, K. / Buda, M. / Wong-Leung, J. et al. | IEEE | 2002
    In this paper the effect of rapid thermal annealing (RTA) on a 30 stacked InAs/GaAs, molecular beam epitaxially grown quantum dot infrared ...

    The effect of quantum dots on the infrared cyclotron resonance in HgSe:Fe

    Tran-Anh, T. / Hansel, S. / Kirste, A. et al. | IEEE | 2002
    MBE-grown quantum dots of HgSe:Fe were investigated by infrared magnetotransmission using the single-turn-coil technique to generate ...

    InAs-quantum-dots-based light emitting diodes with GaNAs strain-compensating layers

    Kurimoto, M. / Ganapathy, S. / Zhang, X.Q. et al. | IEEE | 2002
    GaNAs strain compensating layers have been used to obtain 1.5 /spl mu/m luminescence from InAs quantum dots, and this fundamental scheme ...

    Bias-dependent tunable response of normal incidence long wave infrared quantum dot detectors

    Krishna, S. / Rotella, P. / Raghavan, S. et al. | IEEE | 2002
    We report development of array compatible individual high-performance quantum dot pixel structures that allow for spectral tuning by the ...

    Suppression of interdiffusion in In/sub 0.5/Ga/sub 0.5/As/GaAs quantum dots

    Fu, L. / Lever, P. / Tan, H.H. et al. | IEEE | 2002
    /sub 0.5/Ga/sub 0.5/As/GaAs quantum dot (QD) structure in order to suppress the interdiffusion. It is demonstrated that Ga-doped SOG was only ...

    High-power GaInAs/(Al)GaAs quantum dot lasers with optimized waveguide design for high brightness applications

    Deubert, S. / Klopf, F. / Reithmaier, J.P. et al. | IEEE | 2002
    Quantum dot lasers with high cw output power, very low temperature shift of emission wavelength and vertical far field angles below 35/spl ...

    Modulation characteristics of high-speed tunnel injection In/sub 0.4/Ga/sub 0.6/As quantum dot lasers

    Pradhan, S. / Ghosh, S. / Bhattacharya, P. | IEEE | 2002
    InGaAs/GaAs quantum dot lasers in which electrons are injected to the lasing ground state of the dots by tunneling. We report here the room ...

    High performance long-wavelength QD diode lasers on GaAs substrates

    Maleev, N.A. / Kovsh, A.R. / Zhukov, A.E. et al. | IEEE | 2002
    Long-wavelength GaAs-based quantum dot laser diodes with external differential efficiency of 84...88% combined with low internal loss and ...

    Recent developments in avalanche photodiodes

    Campbell, J.C. / Shuling Wang, / Xiaoguang Zheng, et al. | IEEE | 2002
    -violet PIN photodiodes, and quantum dot infrared photodetectors (QDIPs). ...

    Optical properties of AlInGaN quaternary alloys

    Huang, J.S. / Dong, X. / Luo, X.D. et al. | IEEE | 2002
    result provides evidence for the exciton localization in the quantum dot (QD)-like potentials in our AlInGaN alloy. The TRPL signals are found to ...

    The optical properties of very thin-layer CdTe/ZnSe

    Lap Van Dao, / Makino, H. / Takai, T. et al. | IEEE | 2002
    quantum dots in this samples. ...

    Microseconds domain switching-speed wavelength-multiplexed optical scanner

    Yaqoob, Z. / Riza, N.A. | IEEE | 2002
    nm. Other options for high-speed widely tunable lasers include quantum dot lasers. ...

    Three dimensionally confined photon systems

    Reinecke, T.L. | IEEE | 2002
    fifty years. We have studied emission rates from the InGaAs quantum wells and from InGaAs quantum dots in these cavities. ...

    Femtosecond interactions in semiconductor quantum dots

    Klimov, V.I. | IEEE | 2001
    as small as 5%. These nanoparticles are also known as nanocrystals or colloidal quantum dots (QDs). The sub-10-nm size range corresponds to a ...

    Metalorganic vapor phase epitaxy of quantum dots

    Coleman, J.J. / Yeoh, T.S. | IEEE | 2001
    A method of maskless selective area epitaxy of InAs quantum dots using underlying InGaAs is presented. By using standard lithography ...

    Quantum dot lasers for high power and telecommunication applications

    Reithmaier, J.P. / Klopf, F. / Krebs, R. | IEEE | 2001
    An overview is given about the recent development of high performance quantum dot lasers for 980 nm high power and 1.3 /spl mu/m ...

    Low frequency chirp self-assembled InGaAs/GaAs quantum dot lasers

    Hatori, N. / Sugawara, M. / Akiyama, T. et al. | IEEE | 2001
    We measured and compared frequency chirp between a quantum dot laser and a quantum well laser. The chirp of the quantum dot laser was below ...

    Excitation dependence of lateral beam width in a quantum-dot laser

    Schneider, H.C. / Chow, W.W. | IEEE | 2001
    We investigate the influence of the quantum-dot active material on the lateral field distribution in an edge-emitting geometry. We use the ...

    Carrier dynamics of single InAs quantum dots in a high density sample

    Sang-Kee Eah, / Sungchui Hohng, / Wonho Jhe, et al. | IEEE | 2001
    We performed time-resolved photoluminescence (PL) experiments on single InAs quantum dots in a high density sample. The PL rise time is ...

    Room-temperature CW operation of InP-based long-wavelength InAs quantum dot lasers

    Saito, H. / Nishi, K. / Sugou, S. | IEEE | 2001
    Long-wavelength quantum-dot lasers were fabricated on InP (311)B substrates by using high-dense InAs quantum dots (9 /spl times/10/sup 10 ...

    Saturation intensity in InAs quantum dot and its application to all-optical switches

    Nakamura, I. / Nishikawa, S. / Kohmoto, S. et al. | IEEE | 2001
    in simultaneous achievement of the above requirements. Quantum dots (QDs) are promising candidates for large ONL materials due to their delta ...

    Confined modes of two dimensional photonic crystal defect cavities with Indium Arsenide quantum dots

    Yoshie, T. / Scherer, A. / Hao Chen, et al. | IEEE | 2001
    quantum dots as active material. Single defect donor modes were found to have well localized close to the single defect. ...