Propagation properties of sub-millimeter waves in foggy conditions

The Sub-millimeter Properties of Broad Absorption Line Quasars

We have carried out the first systematic survey of the sub-millimeter properties of broad absorption line (BAL) quasars. 30 BAL quasars drawn from a homogeneously selected sample from the Sloan Digital Sky Survey at redshifts 2 < z < 2.6 were observed with the SCUBA array at the JCMT to a typical rms sensitivity of 2.5mJy. Eight quasars were detected at > 2σ significance, four of which are at >...

Pseudo-Bessel Beams in Millimeter and Sub-millimeter Range

Imaging sub-millimeter waves in planar cryoelectronic circuits by scanning laser microscopy

Low temperature scanning laser microscopy (LTSLM) is demonstrated to be capable of imaging sub-THz electromagnetic fields in cryoelectronic integrated structures. This method allows to evaluate the spatial distribution of timeaveraged field amplitudes with a resolution of about one micrometer for samples with characteristic dimensions of the order of millimeters. Using LTSLM, cryoelectronic dev...

Sub-Cubic Millimeter Biomedical Implants

Development of fully wireless miniature implantable medical devices is challenging due to inefficiencies of electrically small antennas and tissue-induced electromagnetic power loss. Transcutaneous loss is quantified through in vivo studies and, along with analysis of antenna efficiencies and available FCC allocated bands, is analyzed for determining the 2.4GHz operating frequency. Orogolomisti...

Squeezing millimeter waves into microns.

Microstructured metallic devices will play a vital role in the continuing search to manipulate the passage of electromagnetic radiation relevant to optical, microwave, and communication technologies. Here, we investigate the electromagnetic response of a completely novel and ultrathin (<< wavelength) structure within which is buried a metal-clad waveguiding layer ("core") of subwavelength width...