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Optical waveguiding and nonlinear optical characterization of 2‐docosylamino‐5‐nitropyridine Langmuir‐Blodgett films
Author(s) -
Bosshard C. H.,
Küpfer M.,
Flörsheimer M.,
Günter P.,
Pasquier C.,
Zahir S.,
Seifert M.
Publication year - 1991
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19910460106
Subject(s) - wavelength , refractive index , materials science , optics , grating , dispersion (optics) , langmuir–blodgett film , attenuation , nonlinear optics , optoelectronics , monolayer , physics , nanotechnology , laser
Abstract Well ordered Y‐type Langmuir‐Blodgett (LB) multilayers of 2‐docosylamino‐5‐nitropyridine (DCANP) have been characterized with linear and nonlinear optical techniques. The nonlinear optical susceptibilities have been determined for the wavelengths λ = 1064 nm (d 33 = (7.8±1) pm/V, d 31 = (2.0 ± 0.5) pm/V) and λ = 1318 nm (d 33 = (5.6 ± 1) pm/V). Waveguiding experiments with grating couplers allowed the excitation of TE o and TM o modes propagating over more than 20 mm. Guided wave attenuation coefficients as low as 12 dB/cm (at the wavelength λ = 632.8 nm) are reported. Coupling experiments allowed the determination of the dispersion of the refractive index n 3 (n 3 632.8 nm = 1.598). The refractive index data could be used to calculate phase‐matching conditions for frequency doubling with TE modes in DCANP waveguides.