Second-harmonic radiation has been obtained from Langmuir–Blodgett films of E-N -octadecyl-4-[2-(4-dibutylaminophenyl)ethenyl]quinolinium octadecylsulfate, deposited as a waveguide overlay upon optical fiber that is single mode at the pump wavelength (λ=1064 nm) . A quadratic relationship between the pump power and second-harmonic intensity was observed.
© 1999 Optical Society of America
(060.2310) Fiber optics and optical communications : Fiber optics
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(230.7370) Optical devices : Waveguides
(240.0310) Optics at surfaces : Thin films
Sukhvinder S. Johal, Stephen W. James, Ralph P. Tatam, and Geoffrey J. Ashwell, "Second-harmonic generation in Langmuir Blodgett waveguide overlays on single-mode optical fiber," Opt. Lett. 24, 1194-1196 (1999)