Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Frequency conversion using anomalous dispersion of organic material

유기재료의 이상분산을 이용한 파장변환

  • Kim, Eung-Soo (Div. Digital Information Engineering, Pusan University of Foreign Studies) ;
  • Kim, Min-Sung (Dept. Information Communication Engineering, Tongmyong University of Information Technology) ;
  • Kang, Shin-Won (School Electronic and Electrical Engineering, Kyungpook National University)
  • 김응수 (부산외국어대학교 디지털정보공학부) ;
  • 김민성 (동명정보대학교 정보통신공학과) ;
  • 강신원 (경북대학교 전자전기공학부)
  • Published : 2005.02.01
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Abstract

Second harmonic generation(SHG) by guided phase matching is observed in waveguide structure using the anomalous dispersion of a poled polymer. The second harmonic TM$_{0}$ guided mode could be generated from the fundamental TM$_{0}$ guided mode and then the second harmonic power was higher than any other phase matchable mode because the overlap integral between the fundamental and the second harmonic wave was the largest in the theoretical analysis. Near UV SHG(370 nm) was obtained from the fundamental wavelength of Ti-sapphire laser(740 nm).

Poled polymer를 사용하여 도파로구조를 제작하고 2차 비선형광학현상에 의해 제 2고조파(SHG)글 발생시켰다. 기본파와 제 2고조파 사이의 위상정합은 poled polymer의 이상분산 특성을 이용하여 기본파 도파모드(TM$_{0}$)로부터 제 2고조파 도파모드(TM$_{0}$)를 실현하였다. 이때 발생되는 제 2고조파의 power는 위상정합이 가능한 다른 모드의 기본파로부터 발생한 제 2고조파의 power보다 크게 됨을 이론적으로 확인하였고, 위상정합이 가능한 도파로를 제작하였다. 기본파로서 Ti-sapphire laser(740 nm)를 사용하여 근자외 영역의 제 2고조파(370 nm)를 관찰하였다.

Keywords

References

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