CW terahertz wave generation with laser diode pumping and its applications for high-resolution terahertz spectroscopy

Tadao Tanabe, Hikari Dezaki, Srinivasa Ragam, Yutaka Oyama, Jun Ichi Nishizawa

研究成果: Article

2 引用 (Scopus)

抜粋

We have developed a high-resolution and continuous-wave (CW) terahertz spectroscopic system based on difference frequency generation (DFG) with an excitation of phonon-polariton in Gallium phosphide (GaP). The pump and signal near-infrared (NIR) lasers used in this system are an external cavity laser diode (ECLD) and a distributed feedback laser diode (DFB), respectively. Each line width of the NIR laser is less than 4 MHz, thus the quality factor Q of generated THz waves is more than 106. The terahertz wave frequency can be tuned automatically by changing wavelength of the DFB laser. As an example for the THz spectroscopic application for non-destructive inspection of ultra high molecular weight polyethylene (UHMWPE), we have shown terahertz spectra of UHMWPE with some degrees of deformation.

元の言語English
ページ(範囲)153-157
ページ数5
ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
74
発行部数3
DOI
出版物ステータスPublished - 2010 3
外部発表Yes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

フィンガープリント CW terahertz wave generation with laser diode pumping and its applications for high-resolution terahertz spectroscopy' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用