Transmission resonances through aperiodic arrays of subwavelength apertures

Article Abstract:

Resonantly enhanced transmission of the terahertz (THz) electric field is examined through metallic films perforated with several two-dimensional aperiodic aperture arrays using THz time-domain spectroscopy. The results show that the THz transmission spectra obtained using quasiperiodic as well as more generalized aperiodic, aperture structures in metal films also possess enhanced transmission resonances with lineshapes that are comparable in width to those of resonances obtained with periodic structures.

Analysis, Spectrum analysis, Spectroscopy, Wavelength

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Transparency on an optical chip

Article Abstract:

New and exciting developments in optical physics are the discovery of electromagnetically induced transparency (EIT), an unusual effect that occurs when two laser beams interact within an optical material, and the use of novel techniques to fabricate ever smaller structures to control light. This will open up untrodden pathways in photonics, offering prospects of smaller, more efficient devices for the manipulation and transmission of light.

Semiconductors and related devices, Semiconductor and Related Device Manufacturing, Microprocessor Chips, North Carolina, Usage, Microprocessor, CPUs (Central processing units), Microprocessors, Design and construction, Lasers, Central processing units, Microprocessor upgrade, Laser resonators

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Jump-start for a neutron star

Article Abstract:

Observations of radio emission from one of the neutron stars in the 'double-pulsar' system are presented. The theoretical challenge is to establish the feasibility to 'jump-start' a neutron star and physical processes which will enable this to occur.

United States, Pulsars, Neutron stars

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