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Summary: Absorption spectra of liquid water and aqueous buffers between 0.3 and
3.72 THz
Jing Xua
Department of Physics, University of California, Santa Barbara, California 93106
Kevin W. Plaxco
Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106
S. James Allen
Department of Physics, University of California, Santa Barbara, California 93106
Received 3 October 2005; accepted 18 November 2005; published online 19 January 2006
DOI: 10.1063/1.2151267
I. INTRODUCTION
Water exhibits strong frequency-dependent terahertz
absorption with attenuation lengths on the order of tens
of micrometers. To access this spectral information, previous
experimental investigations have employed femtosecond
time domain transmission1
and reflection2
spectroscopies,
reflection dispersive Fourier transform spectroscopy,3,4
optically pumped far infrared FIR laser transmission
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