Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Highly responsive Y-Ba-Cu-O thin film THz detectors with picosecond time
  resolution   High-temperature superconducting YBa2Cu3O7-d (YBCO) thin-film detectors with
improved responsivities were developed for fast time-domain measurements in the
THz frequency range. YBCO thin films of 30 nm thickness were patterned to
micro- and nanobridges and embedded into planar log-spiral THz antennas. The
YBCO thin-film detectors were characterized with continuous wave radiation at
0.65 THz. Responsivity values as high as 710 V/W were found for the YBCO
nanobridges. Pulsed measurements in the THz frequency range were performed at
the electron storage ring ANKA from the Karlsruhe Institute of Technology
(KIT). Due to the high responsivities of the nanobridges no biasing was
required for the detection of the coherent synchrotron radiation pulses
achieving very good agreement between the measured pulse shapes and
simulations.

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The categories of this paper are: dg-ga
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The categories of this paper are: ao-sci
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The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
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The categories of this paper are: plasm-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
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The categories of this paper are: patt-sol