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Interferometer measurements of terahertz waves from Bi2Sr2CaCu2O8+d mesas.

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Title: Interferometer measurements of terahertz waves from Bi2Sr2CaCu2O8+d mesas.
Authors: Turkoglu, F.1, Koseoglu, H.1, Demirhan, Y.1, Ozyuzer, L.1 ozyuzer@iyte.edu.tr, Preu, S.2, Malzer, S.2, Simsek, Y.2, Müller, P.2, Yamamoto, T.3, Kadowaki, K.3
Source: Superconductor Science & Technology. Dec2012, Vol. 25 Issue 12, p1-5. 5p.
Subjects: Interferometers, Terahertz spectroscopy, Bismuth compounds, Microfabrication, Ion bombardment, Liquid helium, Bolometers
Abstract: We fabricated rectangular mesa structures of superconducting Bi2Sr2CaCu2O8+d (Bi2212) using e-beam lithography and Ar ion beam etching techniques for terahertz (THz) emission. c-axis resistance versus temperature (R-T), current-voltage (I-V) characteristics and bolometric THz power measurements were performed to characterize Bi2212 mesas. The emission frequency of mesas was determined using a Michelson interferometer setup which also demonstrates polarized emission. Interference patterns of THz radiation from Bi2212 mesas were detected by various detectors such as a liquid helium cooled silicon composite bolometer, a Golay cell and a pyroelectric detector. An emitted power as high as 0.06 mW was detected from Bi2212 mesas. For the first time, most of the pumped power was extracted as THz emission from a Bi2212 mesa. The radiation at 0.54 THz was detected using the Michelson interferometric setup. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:We fabricated rectangular mesa structures of superconducting Bi2Sr2CaCu2O8+d (Bi2212) using e-beam lithography and Ar ion beam etching techniques for terahertz (THz) emission. c-axis resistance versus temperature (R-T), current-voltage (I-V) characteristics and bolometric THz power measurements were performed to characterize Bi2212 mesas. The emission frequency of mesas was determined using a Michelson interferometer setup which also demonstrates polarized emission. Interference patterns of THz radiation from Bi2212 mesas were detected by various detectors such as a liquid helium cooled silicon composite bolometer, a Golay cell and a pyroelectric detector. An emitted power as high as 0.06 mW was detected from Bi2212 mesas. For the first time, most of the pumped power was extracted as THz emission from a Bi2212 mesa. The radiation at 0.54 THz was detected using the Michelson interferometric setup. [ABSTRACT FROM AUTHOR]
ISSN:09532048
DOI:10.1088/0953-2048/25/12/125004