• Chinese Journal of Lasers
  • Vol. 35, Issue s2, 22 (2008)
Gao Runmei*
Author Affiliations
  • [in Chinese]
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    Gao Runmei. Research into the Terahertz Coherent Radiation Source in View of Optical Technique[J]. Chinese Journal of Lasers, 2008, 35(s2): 22 Copy Citation Text show less

    Abstract

    Because of the unique nature of terahertz radiation and its potential applied value, the research on the generation and detection of it is increasingly flourished. At present the study of the coherent radiation of terahertz has become one of the most important frontier research topics in the field. Three main ways of the generation of terahertz coherent radiation are demonstrated here. The first one is optical technique, which develops from low to high frequency. Terahertz laser is the representative, like gas laser, semiconductor laser and quantum cascade laser. The second is electronic technique, which develops from high to low frequency, like microwave tube and solid microwave source. The third is photo electronic technique, whose frequency spreads from 1 THz to both sides. The technique that the ultra fast laser triggers terahertz pulse is adopted. The terahertz coherent radiation system is designed in view of optical technique. The principle of the device is vibrational-rotational transitions of gas, by means of high pressure direct current driving excited radiation and waveguide resonating cavity. Its functional gases are N2, CD4 and D2. It may generate 1.54 THz and 1.58 THz continuous output through optimization design.
    Gao Runmei. Research into the Terahertz Coherent Radiation Source in View of Optical Technique[J]. Chinese Journal of Lasers, 2008, 35(s2): 22
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