OPTICAL INTERFERENCE IN 2ND-HARMONIC GENERATION FROM A METAL-SURFACE WITH MOLECULAR ADLAYERS

被引：11
作者：
LI, CM [1 ]
YING, ZC [1 ]
DAI, HL [1 ]
机构：
[1] UNIV PENN,DEPT CHEM,PHILADELPHIA,PA 19104
来源：
JOURNAL OF CHEMICAL PHYSICS | 1994年 / 101卷 / 08期
关键词：
D O I：
10.1063/1.468331
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A strong oscillation pattern was observed in optical second-harmonic generation (SHG) at a Ag(lll) surface under pyridine adlayers with variable thickness. This oscillation appears only when s-, but not p-, polarized fundamental light is used. This effect is attributed to the modulation of the radiation efficiency of the fundamental light penetrating into the Ag bulk and of the second-harmonic light radiating out to the vacuum by pyridine overlayers through optical interference. A standard optical interference model has been developed to quantitatively analyze the oscillation patterns and determine the adlayer thickness. It was found that at 90 K the pyridine overlayer growth rate is 1.4 Angstrom per Langmuir exposure.
引用
收藏
页码：7058 / 7063
页数：6
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