高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 367.

• Chemistry in Surface Science • 上一篇    下一篇

PH-Dependent Water Structure at a Quartz Surface Modified with an Amino-terminated Monolayer Studied by Sum Frequency Generation

YE Shen, NIHONYANAGI Satoshi, UOSAKI Kohei   

  1. Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, JAPAN
  • 出版日期:2000-12-31 发布日期:2000-12-31

PH-Dependent Water Structure at a Quartz Surface Modified with an Amino-terminated Monolayer Studied by Sum Frequency Generation

YE Shen, NIHONYANAGI Satoshi, UOSAKI Kohei   

  1. Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, JAPAN
  • Online:2000-12-31 Published:2000-12-31

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摘要：

Sum frequency generation (SFG) is a second-order nonlinear optical process in which two photons at frequencies W1 and w2 generate a photon of sum-frequency at w3=w1+w2. SFG does not occur in media with inversion symmetry and is only active on the surface or interface where the inversion symmetry is necessarily broken[1]. In the IR-visible SFG measurement, a visible laser beam (w1) and a tunable infrared laser beam (w2 are overlapped at an interface and the SFG signal is measured by scanning w2 while keeping w2 constant. The SFG is enhanced when w2 is equal to the vibration levels of molecules at the interface[1].

Abstract:

Sum frequency generation (SFG) is a second-order nonlinear optical process in which two photons at frequencies W1 and w2 generate a photon of sum-frequency at w3=w1+w2. SFG does not occur in media with inversion symmetry and is only active on the surface or interface where the inversion symmetry is necessarily broken[1]. In the IR-visible SFG measurement, a visible laser beam (w1) and a tunable infrared laser beam (w2 are overlapped at an interface and the SFG signal is measured by scanning w2 while keeping w2 constant. The SFG is enhanced when w2 is equal to the vibration levels of molecules at the interface[1].

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