GENERATION OF PARALLEL SECOND HARMONIC LIGHT RAYS USING AN OPTICAL FIBER

摘要

GENERATION OF PARALLELSECOND HARMONIC LIGHT RAYS USING AN OPTICAL FIBERABSTRACT OF THE DISCLOSUREAn arrangement for generating light at asecond harmonic of an input light at a fundamentalfrequency/wavelength. Light at the fundamentalfrequency/wavelength is generated by a laser andimpinges upon an input end of an optical fiber. Theoptical fiber has a non-linear optical characteristicand generates a second harmonic of the input light.The second harmonic which exits the fiber has anaxisymmetrical and conical equiphase wave surface. Acollimator lens collimates the second harmonic andparallel light rays are produced on the output sideof the lens.