Quasiphase-matched second-harmonic generation using periodically photoisomerized azo dye doped polymer film waveguide

J. H. Jung, T. Kato, Takeshi Kinoshita

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A process to form a periodically poled polymer film by photoisomerization is described. A poled film of polymethylmetaclyrate containing 5 wt % of 4-(4-nitrophenylazo)aniline (Disperse Orange 3) was exposed to an Ar+ laser beam using a photomask of a 100 μm period grating. Disorientation of the chromophore molecule resulted in decrease of d33 in the photoisomerized domain. Quasiphase-matched second-harmonic generation is demonstrated experimentally using a processed film. Phase-matching was confirmed by tuning the fundamental wavelength around 1200 nm. The effective propagation length due to a tightly focused fundamental wave and the influence of the absorption loss are discussed. The depoling process by photoisomerization is compared with photobleaching, optical poling, and electron beam treatment.

Original languageEnglish
Pages (from-to)801-806
Number of pages6
JournalJournal of Applied Physics
Volume90
Issue number2
DOIs
Publication statusPublished - 2001 Jul 5

Fingerprint

harmonic generations
dyes
waveguides
polymers
disorientation
photomasks
phase matching
aniline
chromophores
tuning
gratings
laser beams
electron beams
propagation
wavelengths
molecules

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Quasiphase-matched second-harmonic generation using periodically photoisomerized azo dye doped polymer film waveguide. / Jung, J. H.; Kato, T.; Kinoshita, Takeshi.

In: Journal of Applied Physics, Vol. 90, No. 2, 05.07.2001, p. 801-806.

Research output: Contribution to journalArticle

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