TITLE

Radiation emission from wrinkled SiGe/SiGe nanostructure

AUTHOR(S)
Fedorchenko, A. I.; Cheng, H. H.; Sun, G.; Soref, R. A.
PUB. DATE
March 2010
SOURCE
Applied Physics Letters;3/15/2010, Vol. 96 Issue 11, p113104
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Semiconductor optical emitters radiate light via band-to-band optical transitions. Here, a different mechanism of radiation emission, which is not related to the energy band of the materials, is proposed. In the case of carriers traveling along a sinusoidal trajectory through a wrinkled nanostructure, radiation was emitted via changes in their velocity in a manner analogous to synchrotron radiation. The radiated frequency of wrinkled SiGe/SiGe nanostructure was found to cover a wide spectrum with radiation power levels of the order of submilliwatts. Thus, this nanostructure can be used as a Si-based optical emitter and it will enable the integration of optoelectronic devices on a wafer.
ACCESSION #
48698119

 

Related Articles

  • Absolute phase effect in ultrafast optical responses of metal nanostructures. Stockman, M.I.; Hewageegana, P. // Applied Physics A: Materials Science & Processing;Nov2007, Vol. 89 Issue 2, p247 

    We predict that nonlinear ultrafast electron photoemission by strong optical fields and, potentially, other nonlinear optical responses of metal nanostructures significantly depend on the absolute (carrier–envelope) phase of excitation pulses. Strong enhancement of the local optical...

  • Refraction Contrast Imaging by Using MIRRORCLE-Type Tabletop Synchrotron. Hirai, T.; Yamada, H.; Sasaki, M.; Morita, M.; Hasegawa, D.; Nihira, T. // AIP Conference Proceedings;2007, Vol. 902 Issue 1, p125 

    MIRRORCLE type tabletop synchrotron is suitable for magnified hard x-ray imaging due to its micron size x-ray source, wide radiation angle, x-ray spectrum ranging from a few keV to 6 MeV and high flux output. It is known that the magnified imaging by a micron size x-ray source provides a high...

  • Broken enantiomeric symmetry for electromagnetic waves interacting with planar chiral nanostructures. Reichelt, M.; Koch, S.W.; Krasavin, A.V.; Moloney, J.V.; Schwanecke, A.S.; Stroucken, T.; Wright, E.M.; Zheludev, N.I. // Applied Physics B: Lasers & Optics;Jul2006, Vol. 84 Issue 1/2, p97 

    Simulations of Maxwell’s equations for electromagnetic waves interacting with planar chiral structures are shown to depend on the polarization state of the exciting light field. These results illustrate generic features of light interaction with planar chiral structures and imply broken...

  • Remarkable thermal conductivity reduction in metal-semiconductor nanocomposites. Shuvra Basu, Tuhin; Yang, Ronggui; Joottu Thiagarajan, Suraj; Ghosh, Siddhartha; Gierlotka, Stanislaw; Ray, Mallar // Applied Physics Letters;8/19/2013, Vol. 103 Issue 8, p083115 

    Remarkable reduction in thermal conductivity, by ∼2 orders of magnitude compared to the bulk counterpart, is observed in a metal-semiconductor nanocomposite consisting of silver (Ag) and silicon (Si) nanostructures. The variation of thermal conductivity with temperature and with volume...

  • Net accelerations of charged particles by a generalized electromagnetic wave. Akimoto, K. // Physics of Plasmas;Nov2003, Vol. 10 Issue 11, p4224 

    Several mechanisms for a general electromagnetic (EM) wave to provide net energy as well as net longitudinal velocity shifts to particles that are initially propagating parallel to the wave with various velocities are systematically investigated. Three pairs of acceleration mechanisms, each of...

  • Photoinduced broadening of cholesteric liquid crystal reflectors. White, Timothy J.; Freer, Alexander S.; Tabiryan, Nelson V.; Bunning, Timothy J. // Journal of Applied Physics;Apr2010, Vol. 107 Issue 7, p073110 

    The selective reflection of cholesteric liquid crystals (CLCs) is well-known and has been utilized in a number of dynamic optical applications. This work presents a novel approach to passively (e.g., all-optically) cue reflection notch broadening in photoresponsive CLC formulations based on high...

  • Coupling mechanism of gain-guided integrated semiconductor laser arrays. Kapon, E.; Lindsey, C.; Katz, J.; Margalit, S.; Yariv, A. // Applied Physics Letters;1984, Vol. 44 Issue 4, p389 

    It is shown that a gain-guided laser array couples via propagating fields rather than the evanescent mode coupling typically responsible for directional coupling in passive (directional couplers) and active (laser array) devices. We show that these phase-locked modes exhibit an interference...

  • Visible-blind ultraviolet sensitive photodiode with high responsivity and long term stability. Shuang-hong Wu; Wen-lian Li; Bei Chu; Lee, C. S.; Zi-sheng Su; Jun-bo Wang; Qing-jiang Ren; Zhi-zhi Hu; Zhi-qiang Zhang // Applied Physics Letters;7/12/2010, Vol. 97 Issue 2, p023306 

    A high responsivity organic visible-blind ultraviolet photodiode is achieved using aluminum (III) bis(2-methyl-8-quinolinato)4-phenylphenolate (BAlq) and 4,4′,4″-tri-(2-methylphenyl phenylamino) triphenylaine (m-MTDATA) as the electron acceptor and donor, respectively. Under 365 nm...

  • Plastic deformation of gallium arsenide micropillars under uniaxial compression at room temperature. Michler, Johann; Wasmer, Kilian; Meier, Stephan; Östlund, Fredrik; Leifer, Klaus // Applied Physics Letters;1/22/2007, Vol. 90 Issue 4, p043123 

    The authors have experimentally investigated the compressive strength of GaAs pillars with a diameter of 1 μm by uniaxial compression tests. The tests were performed at room temperature and, contrary to macroscopic tests, the micropillars were found to exhibit ductile plasticity comparable to...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics