Abstract

We propose a novel structure for an optical waveguiding layer to achieve efficient second harmonic generation (SHG) in the form of Cerenkov radiation, that is, the nonlinear optical susceptibility (χ⁽²⁾) inversion structure in the thickness direction (NIST). We also experimentally demonstrated, for the first time, an enhancement of 20 to 30 times for the efficiency of Cerenkov radiation SHG of a YAG laser due to NIST using 2-docosylamino-5-nitropyridine (DCANP) Langmuir-Blodgett (LB) film^{1, 2)} as a waveguiding layer.

© 1992 Optical Society of America