Second-order nonlinearity of nonpoled polymeric thin films doped with pyrylium salts with blue window characteristics

Hideki Nakayama, Ryoka Matsushima, Naomichi Okamoto, Atsushi Mizuno, Okihiro Sugihara, Chikara Egami

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A novel nonlinear organic ionic material, or pyrylium salt dye, is synthesized and doped in the polymer matrix. These guest-host-type polymer films, which have no absorption in the blue-wavelength region, have second harmonic generation (SHG) activities without the electric-field poling process. The nonlinear optical coefficient d33 is estimated as 1.10 pm/V at a 15 wt % of dye concentration. The nonlinearity is stable at room temperature and at 120°C. The SHG device is fabricated using the nonpoled polymer film, and Cerenkov-type phase-matched SHG is observed.

Original languageEnglish
Pages (from-to)2813-2815
Number of pages3
JournalApplied Physics Letters
Volume69
Issue number19
DOIs
Publication statusPublished - 1996 Nov 4

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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