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  • 1
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    Control of Lasing in Biomimetic Structures with Short-Range Order (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-05-06
    Description: Author(s): Heeso Noh, Jin-Kyu Yang, Seng Fatt Liew, Michael J. Rooks, Glenn S. Solomon, and Hui Cao We demonstrate lasing in photonic amorphous structures that mimic the isotropic nanostructures which produce noniridescent color in nature. Our experimental and numerical studies reveal that lasing becomes most efficient at certain frequencies, due to enhanced optical confinement by short-range orde... [Phys. Rev. Lett. 106, 183901] Published Thu May 05, 2011
    Keywords: Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    Local Chirality of Optical Resonances in Ultrasmall Resonators (2012)
    American Physical Society (APS)
    Details
    Publication Date: 2012-06-20
    Description: Author(s): Brandon Redding, Li Ge, Qinghai Song, Jan Wiersig, Glenn S. Solomon, and Hui Cao In wavelength-scale cavities with chiral-symmetric geometry, wave optical effects can introduce local chirality, that is, a spatial separation of the clockwise and counterclockwise propagating resonant modes. We show that this local chirality results in unidirectional lasing emission in the far fiel... [Phys. Rev. Lett. 108, 253902] Published Tue Jun 19, 2012
    Keywords: Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Manipulation of High-Order Scattering Processes in Ultrasmall Optical Resonators to Control Far-Field Emission (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-04-26
    Description: Author(s): Brandon Redding, Li Ge, Qinghai Song, Glenn S. Solomon, and Hui Cao By imposing a set of harmonic perturbations to a microcavity boundary, we induce conversion and mixing of orbital angular momentum of light via surface scattering. Multiple scattering paths are available due to high-order scattering, which can be greatly enhanced by quasidegenerate resonances. By ma... [Phys. Rev. Lett. 112, 163902] Published Fri Apr 25, 2014
    Keywords: Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    Thermal history and evolution of the moon. (1973)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: In this work, theoretical lunar temperature models are computed taking into account different initial conditions to represent possible accretion models and various abundances of heat sources to correspond to different compositions. Differentiation and convection are simulated in the numerical computational scheme. Models of the thermal evolution of the moon that fit the chronology of igneous activity on the lunar surface, the stress history of the lunar lithosphere implied by the presence of mascons, and the surface concentrations of radioactive elements, involve extensive differentiation early in lunar history. This differentiation may be the result of rapid accretion and large-scale melting or of primary chemical layering during accretion. Differences in present-day temperatures for these two possibilities are significant only in the inner 1000 km of the moon and are not resolvable with presently available data.
    Keywords: SPACE SCIENCES
    Type: The Moon; 7; May-June
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  • 5
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    Thermal evolution of the moon. (1972)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: The thermal history and current state of the lunar interior are investigated using constraints imposed by recent geological and physical data. Theoretical temperature models are computed taking into account different initial conditions, heat sources, differentiation and simulated convection. To account for the early formation of the lunar highlands, the time duration of magmatism and present-day temperatures estimated from lunar electrical conductivity profiles, it is necessary to restrict initial temperatures and abundances of radioactive elements. Successful models require that the outer half of the moon initially heated to melting temperatures, probably due to rapid accretion. Differentiation of radioactive heat sources toward the lunar surface occurred during the first 1.6 billion years. Temperatures in the outer 500 km are currently low, while the deep interior (radius less than 700 to 1000 km) is warmer than 1000 C, and is of primordial material.
    Keywords: SPACE SCIENCES
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  • 6
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    Density within the moon and implications for lunar composition (1974)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: A number of simple density models for the moon are discussed. The considered models are consistent with the lunar mass and moment of inertia, the latest information on the seismic velocity of the lunar crust and mantle, and assorted estimates of temperature in the lunar interior. New material presented includes the implications for density models of recent seismic evidence for a thin, high velocity layer beneath the lunar crust and for a zone of partial melting below 1000 km depth. The consequences of a dense, iron-rich central core are also explored.
    Keywords: SPACE SCIENCES
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  • 7
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    On the density distribution in the moon. (1968)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: Models for lunar density distribution consistent with available data on lunar physical properties
    Keywords: SPACE SCIENCES
    Type: ; YAL SOCIETY (
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  • 8
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    Internal constitution and evolution of the moon. (1973)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: The composition, structure and evolution of the moon's interior are narrowly constrained by a large assortment of physical and chemical data. Models of the thermal evolution of the moon that fit the chronology of igneous activity on the lunar surface, the stress history of the lunar lithosphere implied by the presence of mascons, and the surface concentrations of radioactive elements, involve extensive differentiation early in lunar history. This differentiation may be the result of rapid accretion and large-scale melting or of primary chemical layering during accretion; differences in present-day temperatures for these two possibilities are significant only in the inner 1000 km of the moon and may not be resolvable.
    Keywords: SPACE SCIENCES
    Type: Physics of the Earth and Planetary Interiors; 7; Apr. 197
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  • 9
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    Velocity structure and evolution of the moon (1973)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: Seismic data from the Apollo Passive Seismic Network stations are analyzed to determine the velocity structure and to infer the composition and physical properties of the lunar interior. Data from artificial impacts (SIBV booster and LM-ascent stage) cover a distance range of 9 to 1750 km. Travel times and amplitudes, as well as theoretical seismograms, are used to derive a velocity model for the outer 150 km of the moon. The P-wave velocity model confirms an earlier report of a lunar crust in the eastern part of Oceanus Procellarum. The crust is about 60 km thick and may consist of two layers in the mare regions. Possible values for the P-wave velocity in the uppermost mantle are between 7.6 and 9.0 km/sec. The 9 km/sec velocity represents either a localized heterogeneous unit, or a thin layer less than about 40 km in thickness. The elastic properties of the deep interior, as inferred from the seismograms of natural events (meteoroid impacts and moonquakes) occurring at great distances, indicate that there is an increase in attenuation and a possible decrease of velocity at depths below about 1000 km.
    Keywords: SPACE SCIENCES
    Type: Lunar Science Conference; Mar 05, 1973 - Mar 08, 1973; Houston, TX
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