Title :
Leaky-wave resonances in second-harmonic generation induced by surface transient grating
Author :
Petruskevicius, R.
Author_Institution :
Inst. of Phys., Vilnius, Lithuania
Abstract :
Summary form only given. In this work, it is shown that leaky-wave resonances in the second-harmonic generation can be observed not only on the "permanent" diffraction gratings, but also on the two-wave induced surface transient gratings. An enhancement and bistability of the second-harmonic generation appears at these leaky-wave resonances on the induced surface transient grating defined basically by surface contribution caused by the surface enhanced local field due to excitation of surface polaritons. It can be important for nonlinear optical probing of surfaces and thin films due to higher sensitivity stipulated by enhanced second-harmonic signal.
Keywords :
diffraction gratings; optical couplers; optical harmonic generation; optical microscopy; polaritons; surface phenomena; transients; bistability; enhanced second-harmonic signal; induced surface transient grating; leaky-wave resonances; nonlinear optical probing; permanent diffraction gratings; second-harmonic generation; surface contribution; surface enhanced local field; surface polaritons; surface transient grating; surfaces; thin films; two-wave induced surface transient gratings; Barium; Diffraction gratings; Frequency; Laser excitation; Nonlinear optics; Optical mixing; Optical pulse generation; Optical sensors; Optical surface waves; Resonance;
Conference_Titel :
Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on
Conference_Location :
Nice
Print_ISBN :
0-7803-6319-1
DOI :
10.1109/CLEOE.2000.910238
