Adsorbate resonance enhancement in optical surface second-harmonic generation: S on Pd(100)

✍ Scribed by W. Heuer; L. Schröter; H. Zacharias

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 351 KB
• Volume: 135
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(87)85160-6

✦ Synopsis

Optical second-harmonic generation from a fixed-frequency laser at 1= 1064 nm has been used to monitor the adsorption of sulfur atoms on a Pd( 100) single-crystal surface. The signal observed was dominated by the contribution from the adsorbate atoms to the second-order susceptibility due to a resonance enhancement from a nearby electronic state of the S atom. This enhancement rendered an adsorbate sensitivity of 0.01 monolayer possible.