Tunable polariton absorption of distributed feedback microcavities at room temperature

Tohru Fujita, Yoshihiro Sato, Tetsuya Kuitani, Teruya Ishihara

Research output: Contribution to journalArticlepeer-review

183 Citations (Scopus)


We have demonstrated well-separated tunable polariton absorption for a semiconductor-cavity composite system in transmission measurements at room temperature. A distributed feedback microcavity of the fourth order is fabricated by spin coating a self-organized inorganic/organic multiple quantum wells, (Formula presented), on a corrugated quartz substrate with a period of about (Formula presented). By changing the grating period or the incident angle, the absorption dips exhibit anticrossing behavior. Owing to the large excitonic oscillator strength of the material, the polariton mode splitting is as large as (Formula presented) even at room temperature. At the normal incidence, an exciton and a light form a strongly coupled standing wave, which corresponds to a cavity polariton in Fabry-Perot semiconductor microcavities.

Original languageEnglish
Pages (from-to)12428-12434
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number19
Publication statusPublished - 1998
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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