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      Development of a rapid-scan fiber-integrated terahertz spectrometer

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      Author(s)
      Keskin, H.
      Altan, H.
      Yavas, S.
      Ilday, F. O.
      Eken, K.
      Sahin, A. B.
      Date
      2014
      Source Title
      Optical and Quantum Electronics
      Print ISSN
      0306-8919
      Publisher
      Springer New York LLC
      Volume
      46
      Issue
      4
      Pages
      495 - 503
      Language
      English
      Type
      Article
      Item Usage Stats
      216
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      202
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      Abstract
      Scientists in terahertz (THz) wave technologies have benefited from the recent developments in ultrafast laser technologies and RF technologies and applied these new gained techniques into characterizing a wide variety of phenomena. Undoubtedly, the most successful of these applications has been in the development of time-domain terahertz spectroscopic and imaging systems which has been utilized in the characterization of dielectrics and semiconductors. This pulsed technique has allowed users to characterize dynamical behavior inside materials under illumination with picosecond resolution. Typically pump/probe or similar dynamical measurements require the use of amplified pulses derived from free-space solid state lasers in the μJ-mJ range and since interferometric techniques are typically used in pulsed measurements the measurement time of a THz spectrum can last at least tens of minutes. Better systems can be realized based on fiber laser technologies. Here we discuss the advantages of a THz spectrometer driven by an ultrafast Ytterbium doped fiber laser whose repetition rate can be tuned rapidly allowing for rapid dynamical measurements. The efficient gain medium, robust operation and compact design of the system opens up the possibility of exploring rapid detection of various materials as well as studying dynamical behavior using the high brightness source.
      Keywords
      Fiber laser
      Rapid scan
      TDS
      THz
      TRTS
      Characterization
      Dynamics
      Fiber lasers
      Interferometry
      Spectrometers
      Technology
      Ultrafast lasers
      Interferometric techniques
      TDS
      Terahertz spectrometer
      THz
      Ultrafast laser technology
      Ytterbium-doped fiber lasers
      Terahertz waves
      Permalink
      http://hdl.handle.net/11693/26603
      Published Version (Please cite this version)
      http://dx.doi.org/10.1007/s11082-013-9794-x
      Collections
      • Department of Electrical and Electronics Engineering 4011
      • Department of Physics 2550
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