Spectrum to space transformed fast terahertz imaging

Steffen Schumann, Christian Jansen, Michael Schwerdtfeger, Stefan Busch, Ole Peters, Maik Scheller, Martin Koch

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

We present an imaging technique in which the broadband frequency information of terahertz (THz) pulses is transformed into spatial resolution. Efficient blazed diffractive gratings spread the individual frequency components over a wide and defined spatial range and f-theta optics are employed to focus the individual components onto a onedimensional image-line. Measuring the time domain waveform of the THz waves allows therefore for a direct reconstruction of spatial sample characteristics as the spatial domain information is encoded in the terahertz spectrum. We will demonstrate terahertz imaging on selected samples with an improvement in acquisition speed up to two orders of magnitude.

Original languageEnglish (US)
Pages (from-to)19200-19205
Number of pages6
JournalOptics Express
Volume20
Issue number17
DOIs
StatePublished - Aug 13 2012

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Schumann, S., Jansen, C., Schwerdtfeger, M., Busch, S., Peters, O., Scheller, M., & Koch, M. (2012). Spectrum to space transformed fast terahertz imaging. Optics Express, 20(17), 19200-19205. https://doi.org/10.1364/OE.20.019200