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Nanostructures, including nanowires, nanotrees, and membranes have potential applications in electronics, optoelectronics or solar cell applications. For example, the growth of branched nanowires (NWs) recently gained interest due to new developments in quantum optics and mesoscopic physics. Recent studies reported the growth of InAs and InSb NW networks that are the most promising material candidate...
We report on optomechanical effects in 2D photonic crystal defect cavities coupled to integrated silicon waveguides of different widths. Mechanical modes are observed systematically on a chip scale. By tuning the excitation laser wavelength, we observe optical spring effects. We extract optomechanical coupling coefficients and demonstrate the dispersive and dissipative nature of optomechanical coupling...
Based on site- and energy-controlled quantum wires (QWR) and quantum dots (QD), diverse photonic-crystal microcavity laser systems are proposed and discussed. Results demonstrating QWR lasing, cavity coupling and QD ordered arrays are presented.
Dense (1010 cm-2) quantum dots (QDs) were grown in inverted pyramidal recesses by OMCVD. The high uniformity of the QD arrays is demonstrated by micro-photoluminescence spectra having linewidth as small as 6.5 meV and AFM measurements.
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