Abstract
A new organic crystal isopropyl-4-acetylphenylurea (IAPU) was identified as a promising candidate for blue second-harmonic generation (SHG). The nonlinear optical d coefficient obtained is d22 = 30.5 pm/V at the fundamental wavelength 1064 nm, and the crystal's transmitting range is 380-1400 nm. Thin, single crystalline films fabricated on the glass substrate are useful for waveguide-device applications. For the improvement of SHG efficiency and the relaxation of phase-matching conditions, the concept of thickness-noncritical phase matching (TNCPM) in a four-layer waveguide is proposed. Modal dispersion calculations for the various four-layer structures suggested the possibility of TNCPM from the TE0 ω mode to TE1 2ω mode and from the TE0 ω mode to the TE2 2ω mode by adjustment of the refractive indices of the two guiding layers.
| Original language | English |
|---|---|
| Pages (from-to) | 1099-1108 |
| Number of pages | 10 |
| Journal | Journal of the Optical Society of America B: Optical Physics |
| Volume | 14 |
| Issue number | 5 |
| Publication status | Published - 1997 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Organic crystal isopropyl-4-acetylphenylurea and waveguide second-harmonic generation. / Yamamoto, H.; Funato, S.; Sugiyama, T.; Jung, J.; Kinoshita, Takeshi; Sasaki, K.
In: Journal of the Optical Society of America B: Optical Physics, Vol. 14, No. 5, 1997, p. 1099-1108.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Organic crystal isopropyl-4-acetylphenylurea and waveguide second-harmonic generation
AU - Yamamoto, H.
AU - Funato, S.
AU - Sugiyama, T.
AU - Jung, J.
AU - Kinoshita, Takeshi
AU - Sasaki, K.
PY - 1997
Y1 - 1997
N2 - A new organic crystal isopropyl-4-acetylphenylurea (IAPU) was identified as a promising candidate for blue second-harmonic generation (SHG). The nonlinear optical d coefficient obtained is d22 = 30.5 pm/V at the fundamental wavelength 1064 nm, and the crystal's transmitting range is 380-1400 nm. Thin, single crystalline films fabricated on the glass substrate are useful for waveguide-device applications. For the improvement of SHG efficiency and the relaxation of phase-matching conditions, the concept of thickness-noncritical phase matching (TNCPM) in a four-layer waveguide is proposed. Modal dispersion calculations for the various four-layer structures suggested the possibility of TNCPM from the TE0 ω mode to TE1 2ω mode and from the TE0 ω mode to the TE2 2ω mode by adjustment of the refractive indices of the two guiding layers.
AB - A new organic crystal isopropyl-4-acetylphenylurea (IAPU) was identified as a promising candidate for blue second-harmonic generation (SHG). The nonlinear optical d coefficient obtained is d22 = 30.5 pm/V at the fundamental wavelength 1064 nm, and the crystal's transmitting range is 380-1400 nm. Thin, single crystalline films fabricated on the glass substrate are useful for waveguide-device applications. For the improvement of SHG efficiency and the relaxation of phase-matching conditions, the concept of thickness-noncritical phase matching (TNCPM) in a four-layer waveguide is proposed. Modal dispersion calculations for the various four-layer structures suggested the possibility of TNCPM from the TE0 ω mode to TE1 2ω mode and from the TE0 ω mode to the TE2 2ω mode by adjustment of the refractive indices of the two guiding layers.
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M3 - Article
AN - SCOPUS:0031139218
VL - 14
SP - 1099
EP - 1108
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
SN - 0740-3224
IS - 5
ER -