Fermann, M.E., Li, L., Farries, M.C., Poyntz-Wright, L.J. and Dong, L.
Second-harmonic generation using gratings optically written by mode interference in poled optical fibres
Optics Letters, 14, (14), . (doi:10.1364/OL.14.000748).
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Second-order nonlinear susceptibility gratings are induced in optical fibers by mode interference of high-intensity blue light in the presence of an external dc electric poling field. An a result, efficient second-harmonic generation can be obtained for any infrared design wavelength.
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