Wood's Anomalies in Second-Harmonic Generation at Surfaces

✍ Scribed by Petruskevicius, R.

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 155 KB
• Volume: 175
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/(sici)1521-396x(199909)175:1<207::aid-pssa207>3.0.co;2-u

✦ Synopsis

A study has been carried out of self-diffraction in the Raman-Nath regime through three-and four-wave mixing processes at double Wood's anomaly related to excitation of surface polaritons at the fundamental and second-harmonic frequencies by means of induced dynamic gratings. The effects of enhancement and bistability of second-harmonic generation were determined. All these phenomena are caused by the surface-enhanced local field due to excitation of surface polaritons and can be used to increase the sensitivity of nonlinear optical techniques for surface probing.