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2004 Fiscal Year Final Research Report Summary

Development of real time terahertz imaging system using optical mixing effect

Research Project

Project/Area Number 14205011
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied optics/Quantum optical engineering
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

TANIUCHI Tetsuo  TOHOKU UNIVERSITY, INSTITUTE OF MULTIDISCIPLINARY RESEARCH FOR ADVANCED MATERIALS, ASSOICIATE PROFESSOR, 多元物質科学研究所, 助教授 (80260446)

Project Period (FY) 2002 – 2004
Keywordsterahertz / nonlinear optics / organic material
Research Abstract

Frequency conversion between optical and terahertz (THz) waves using nonlinear optical mixing in an organic DAST and GaP crystal was investigated theoretically and experimentally. Widely tunable THz waves ranging from 2 to 30 THz were generated from DAST crystals using a dual-wavelength optical parametric oscillator (OPO) with two KTiOPO_4 crystals as the input light source. The OPO has a tunable range from 1340 to 1550 nm and is pumped by a frequency-doubled, Q-switched Nd : YAG laser with a pulse duration of 12 ns. The THz output energy exceeding 550 nJ (peak power : 46 W) at 11.3 THz was obtained with a 1-mm-thick DAST crystal. Sub-THz waves in the range of 0.3-3 THz were also generated using an improved dual-wavelength OPO near 990 nm in combination with 2-mm-thick DAST and 15-mm-thick GaP crystals.
Frequency conversion from THz-wave to optical wave can be achieved by sum frequency generation (SFG). Phase-matching conditions were studied for DAST, GaP, ZnTe and GaAs crystals. Sum frequency optical wave at 1400nm was generated from DAST crystal by mixing the THz wave at 11.3 THz and the optical wave at 1478 nm. These THz system consisting of the tunable THz source and the SFG detection system could potentially be used for real-time THz-imaging, THz-ranging, and spectroscopic applications.

  • Research Products

    (22 results)

All 2005 2004 2002

All Journal Article (22 results)

  • [Journal Article] Tunable Sub-Terahertz Wave Generation from an Organic DAST Crystal2005

    • Author(s)
      Tetsuo Taniuchi
    • Journal Title

      Jpn.J.Appl.Phys. 44・21

      Pages: L652-L651

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Widely Tunable Terahertz-Wave Source with an Organic DAST Crystal2005

    • Author(s)
      Tetsuo Taniuchi
    • Journal Title

      Proceedings of the 8th International Conference on Organic Nonlinear Optics 05・1

      Pages: 213-214

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] DAST Derivatives for THz-Wave Generation2005

    • Author(s)
      Shuji Okada
    • Journal Title

      Proceedings of the 8th International Conference on Organic Nonlinear Optics 05・1

      Pages: 203-204

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Tunable Sub-Terahertz Wave Generation from an Organic DAST Crystal2005

    • Author(s)
      T.Taniuchi
    • Journal Title

      Jpn.J.Appl.Phys. 44-21

      Pages: L652-L654

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Widely Tunable Terahertz-Wave Source with an Organic DAST Crystal2005

    • Author(s)
      T.Taniuchi
    • Journal Title

      Proceedings of the 8th International Conference on Organic Nonlinear Optics 05-1

      Pages: 213-214

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] DAST Derivatives for THz-Wave Generation2005

    • Author(s)
      S.Okada
    • Journal Title

      Proceedings of the 8th International Conference on Organic Nonlinear Optics 05-1

      Pages: 203-204

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Widely tunable terahertz-wave generation in an organic crystal and its spectroscopic application2004

    • Author(s)
      Tetsuo Taniuchi
    • Journal Title

      J.Appl.Phys. 95・11

      Pages: 5984-5988

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Collinear phase-matched terahertz-wave generation in GaP crystal using a dual-wavelength optical parametric oscillator2004

    • Author(s)
      Tetsuo Taniuchi
    • Journal Title

      J.Appl.Phys. 95・12

      Pages: 7588-7591

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] High-Quality Organic 4-dimethylamino-N-methyl-4-stilbazolium Tosylate (DAST) Crystals for THz-Wave Generation2004

    • Author(s)
      Hiroaki Adachi
    • Journal Title

      Jpn.J.Appl.Phys. 43・8B

      Pages: L1121-L1123

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Continuously tunable THz- and far-infrared-wave generation from DAST crystal2004

    • Author(s)
      Tetsuo Taniuchi
    • Journal Title

      Electron.Lett. 40・9

      Pages: 549-551

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Continuously tunable terahertz-wave generation in GaP crystal by collinear difference frequency mixing2004

    • Author(s)
      Tetsuo Taniuchi
    • Journal Title

      Electron.Lett. 40・5

      Pages: 327-328

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Widely tunable THz-wave generation in 2-20THz range from DAST crystal by nonlinear difference frequency mixing2004

    • Author(s)
      Tetsuo Taniuchi
    • Journal Title

      Electron.Lett. 40・1

      Pages: 60-63

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Widely Tunable Terahertz-Wave Generation in an Organic Crystal and its Spectroscopic Application2004

    • Author(s)
      T.Taniuchi
    • Journal Title

      J.Appl.Phys. 95-11

      Pages: 5984-5988

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Collinear Phase-Matched Terahertz-Wave Generation in GaP Crystal using a Dual-Wavelength Optical Parametric Oscillator2004

    • Author(s)
      T.Taniuchi
    • Journal Title

      J.Appl.Phys. 95-12

      Pages: 7588-7591

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] High-Quality Organic 4-dimethylamino-N-methyl-4-stilbazolium Tosylate (DAST) Crystals for THz-Wave Generation2004

    • Author(s)
      H.Adachi
    • Journal Title

      Jpn.J.Appl.Phys. 43-8B

      Pages: L1121-L1123

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Continuously Tunable THz-and Far-Infrared-Wave Generation from DAST Crystal2004

    • Author(s)
      T.Taniuchi
    • Journal Title

      Electron.Lett. 40-9

      Pages: 549-551

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Continuously Tunable Terahertz-Wave Generation in GaP Crystal by Collinear Difference Frequency Mixing2004

    • Author(s)
      T.Taniuchi
    • Journal Title

      Electron.Lett. 40-5

      Pages: 327-328

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Widely Tunable THz-Wave Generation in 2-20THz Range from DAST Crystal by Nonlinear Difference Frequency Mixing2004

    • Author(s)
      T.Taniuchi
    • Journal Title

      Electron.Lett. 40-1

      Pages: 60-63

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 非線形光学効果を用いた広帯域波長可変テラヘルツ電磁波放射2002

    • Author(s)
      谷内哲夫
    • Journal Title

      レーザー研究 30・7

      Pages: 365-369

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Widely tunable THz-wave generation in DAST crystal by nonlinear difference frequency mixing2002

    • Author(s)
      Tetsuo Taniuchi
    • Journal Title

      Proceedings of the International Conference on Lasers and Electro-Optic (CLEO'2002) 02・1

      Pages: 148-149

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Widely Tunable Terahertz Electromagnetic Radiation by Nonlinear Optical Effect2002

    • Author(s)
      T.Taniuchi
    • Journal Title

      The Review of Laser Engineering 30-7

      Pages: 365-369

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Widely Tunable THz-wave Generation in DAST Crystal by Nonlinear Difference Frequency Mixing2002

    • Author(s)
      T.Taniuchi
    • Journal Title

      Proceedings of the International Conference on Lasers and Electro-Optic 02-1

      Pages: 148-149

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2006-07-11  

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