Effective multi-photon absorption properties in solutions of pyridinium salt lasing dyes

H. H. Fan, K. S. Wu, H. Z. Wang, Y. P. Tian, Ga Lai Law, K. L. Wong, Wing Tak Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)


Three- and four-photon absorption induced processes of six new styrylpyridinium motif dyes are studied. Their largest 3-photon absorption cross-section is 29.9 times of Rhodamine 6G. Effective 3- and 4-photon absorption induced amplified spontaneous emissions are observed. The efficiency of 3-photon absorption induced lasing reaches 5.4%. Their large 3-photon absorption cross-sections mainly result from large conjugated plane and large dipole moment, and also relate to their counter ions. Their high efficiencies of 3-photon absorption induced lasing imply that 3-photon absorption process is possible to satisfy the conditions for practical applications.
Original languageEnglish
Pages (from-to)77-81
Number of pages5
JournalChemical Physics Letters
Issue number1-3
Publication statusPublished - 26 Nov 2007
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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