[12a-S421-1~11] 3.9 Terahertz technologies

[12a-S421-3] Development of a reflection-type scanning laser terahertz near-field imaging system

Kosuke Okada¹, 〇Kazunori Serita¹, Zirui Zang^1,2, Hironaru Murakami¹, Iwao Kawayama¹, Quentin Cassar⁴, Gaetan MacGrogan⁴, Thomas Zimmer³, Jean-Paul Guillet³, Patrick Mounaix³, Masayoshi Tonouchi¹ (1.ILE, Osaka Univ., 2.Univ. of Rochester, 3.Univ. of Bordeaux, 4.Bergonie Inst.)

Keywords:Terahertz, nonlinear optical crystal, Terahertz imaging

We have developed a reflection-type scanning laser terahertz (THz) near-field imaging system for high-spatial resolution THz imaging of various shapes of samples. In the system, a sample is set in the vicinity of a local emission of THz light source that is generated in the process of an optical rectification in a nonlinear optical crystal. By detecting the amplitude of reflected THz waves, we successfully observed high-spatial resolution THz images of a piece of paraffin-embedded breast tissue with a resolution less than 10um.