Journal
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
Volume 25, Issue 12, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-2048/25/12/125004
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Funding
- TUBITAK (Scientific and Technical Council of Turkey) [110T248]
- Alexander von Humboldt foundation
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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.
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