Enhancing the two-photon excited fluorescence by two-dimensional nonlinear optical-polymer photonic crystals

Shin Ichiro Inoue, Shiyoshi Yokoyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We have successfully demonstrated enhancement of the two-photon excited fluorescence (TPEF) in a highly nonlinear optical polymer two-dimensional (2D) photonic crystal (PhC) waveguide, arising from resonant coupling between the external laser field and a photonic band mode. Moreover, we directly determine the experimental photonic band dispersion structure of waveguiding modes under the light line in a 2D PhC waveguide by using angle-resolved attenuated total reflection spectroscopy. Resonance coupling between the external evanescent wave from total reflection within the prism and the waveguiding modes in the 2D PhC provides clear information on individual band components by resolving the angle (i.e., wave vector k) and photon energy. The experimentally determined photonic band structure is essential for understanding the novel light propagation and nonlinear optical properties of PhC systems. Good agreement was obtained between the TPEF enhancements and features of the photonic band structure, indicating that active manipulation of these nonlinear TPE processes is a realistic possibility through engineering the band dispersion and band group velocity characteristics. Future work in this direction should lead to dramatic improvements in the performance of TPE applications.

Original languageEnglish
Title of host publicationOrganic Photonic Materials and Devices XI
Publication statusPublished - 2009
EventOrganic Photonic Materials and Devices XI - San Jose, CA, United States
Duration: Jan 27 2009Jan 29 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherOrganic Photonic Materials and Devices XI
Country/TerritoryUnited States
CitySan Jose, CA

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Enhancing the two-photon excited fluorescence by two-dimensional nonlinear optical-polymer photonic crystals'. Together they form a unique fingerprint.

Cite this