Abstract
The organic compound 2-(N,N-dimethylamino)-5-nitroacetanilide (DAN) has recently generated considerable interest because of its highly nonlinear optical properties as both a bulk single crystal and the core of capillary fibers.1-4 Macroscopic crystals of DAN have been shown capable of type I phase matching with a second harmonic conversion efficiency as high as 18 and 20% for Q-switched 1.32- and 1.0μ-pm radiation, respectively.3 At nonideal phase-matched conditions inside silica clad fibers, efficiencies of 0.01%1,2 have been observed at the lower wavelength.
© 1988 Optical Society of America
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