Four-layer optical waveguide device using isopropyl-4-acetylphenylurea (IAPU)

Hironobu Yamamoto, Satoru Funato, Tsunetoshi Sugiyama, Robert E. Johnson, Robert A. Norwood, Takeshi Kinoshita, Keisuke Sasaki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The new organic crystal isopropyl-4-acetylphenylurea (IAPU) was identified as a promising candidate for frequency doubling to the blue light region. The nonlinear optical d-coefficient, d22 = 35 pm/V was obtained at 1064 nm by the Maker-fringe technique. The crystal's transmitting range is 380-1400 nm. Thin film of IAPU crystallize appropriately for waveguide applications. Thickness-noncritical phase-matching (TNCPM) in a four-layer waveguide structure using an IAPU crystal as a top cladding layer is proposed. Modal dispersion calculations for four-layer waveguides demonstrate the possibility of TNCPM from TE0$+ω/ mode to TE1$+2ω/ mode by adjusting the refractive indices of the two guiding layers, where the modal dispersion curves are intentionally designed to be tangent over a limited waveguide thickness. The TNCPM condition in an organic-inorganic hybrid four-layer waveguide structure is discussed as are its relaxation of tolerance requirements on waveguide fabrication.

Original languageEnglish
Pages (from-to)263-272
Number of pages10
JournalMolecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Volume14
Issue number1-4
Publication statusPublished - 1995
Externally publishedYes

Fingerprint

Optical waveguides
optical waveguides
Waveguides
waveguides
Phase matching
phase matching
Crystals
crystals
tangents
Refractive index
adjusting
refractivity
Fabrication
Thin films
requirements
fabrication
curves
coefficients
thin films

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Condensed Matter Physics

Cite this

Four-layer optical waveguide device using isopropyl-4-acetylphenylurea (IAPU). / Yamamoto, Hironobu; Funato, Satoru; Sugiyama, Tsunetoshi; Johnson, Robert E.; Norwood, Robert A.; Kinoshita, Takeshi; Sasaki, Keisuke.

In: Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics, Vol. 14, No. 1-4, 1995, p. 263-272.

Research output: Contribution to journalArticle

Yamamoto, Hironobu ; Funato, Satoru ; Sugiyama, Tsunetoshi ; Johnson, Robert E. ; Norwood, Robert A. ; Kinoshita, Takeshi ; Sasaki, Keisuke. / Four-layer optical waveguide device using isopropyl-4-acetylphenylurea (IAPU). In: Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics. 1995 ; Vol. 14, No. 1-4. pp. 263-272.
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AU - Sasaki, Keisuke

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