Title :
Enhanced second-harmonic generation with Cerenkov radiation scheme in organic film slab-guide at IR lines
Author :
Azumai, Yuji ; Seo, Iwao ; Sato, Heihachi
Author_Institution :
Dept. of Electr. Eng., Nat. Defense Acad., Yokosuka, Japan
fDate :
1/1/1992 12:00:00 AM
Abstract :
Second-harmonic generation is enhanced with both symmetric and asymmetric slab-guides composed of vinylidene cyanide/vinyl acetate copolymer film and a fused silica in the Cerenkov radiation scheme at Nd:YAG 1.06 μm and Er:YAG 2.94 μm laser lines. At 1.06 μm wavelength an enhancement factor of about five in comparison with a bulk scheme has been obtained with the symmetrical Cerenkovian configuration having the film thickness d≃5 μm. Extending the theory to the experimental model presented, the results are well explained theoretically, and an enhancement of the SHG power by a factor of 50 can be expected if d≃0.5 μm
Keywords :
Cherenkov radiation; optical harmonic generation; optical waveguides; polymer blends; polymer films; 1.06 micron; 2.94 micron; 5 micron; Cerenkov radiation scheme; IR lines; YAG:Er; YAG:Nd; YAl5O12:Er; YAl5O12:Nd; asymmetric slab-guides; enhancement factor; film thickness; fused SiO2; laser lines; organic film slab-guide; second-harmonic generation; symmetrical Cerenkovian configuration; vinylidene cyanide/vinyl acetate copolymer film; wavelength; Crystals; Erbium; Free electron lasers; Laser theory; Neodymium; Nonlinear optics; Optical films; Optical harmonic generation; Silicon compounds; Slabs;
Journal_Title :
Quantum Electronics, IEEE Journal of
