Ultrafast dephasing and incoherent light photon echoes in organic amorphous systems

Ryuzi Yano, Yoshinori Matsumoto, Hiroki Nakatsuka, Toshiro Tanin

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Incoherent light photon echoes were observed in organic amorphous systems (cresyl violet in polyvinyl alcohol and 1,4-dihydroxyanthraquinone in poly-methacrylic acid) by using temporally-incoherent nanosecond laser pulses. It was found that an echo decay curve of an organic amorphous system is composed of a sharp peak which decays very rapidly and a slowly decaying wing at the tail. We show that the persistent hole burning (PHB) spectra were reproduced by the Fourier-cosine transforms of the echo decay curves. We claim that in general, we must take into account the multi-level feature of the system in order to explain ultrafast dephasing at very low temperatures.

Original languageEnglish
Pages (from-to)3814-3821
Number of pages8
JournalJournal of the Physical Society of Japan
Issue number10
Publication statusPublished - 1989
Externally publishedYes


  • Incoherent light photon echo
  • Multi-level system
  • Organic amorphous system
  • Persistent hole burning
  • Ultrafast dephasing

ASJC Scopus subject areas

  • General Physics and Astronomy


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