Chem. J. Chinese Universities ›› 2000, Vol. 21 ›› Issue (S1): 367.
• Chemistry in Surface Science • Previous Articles Next Articles
YE Shen, NIHONYANAGI Satoshi, UOSAKI Kohei
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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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YE Shen, NIHONYANAGI Satoshi, UOSAKI Kohei. PH-Dependent Water Structure at a Quartz Surface Modified with an Amino-terminated Monolayer Studied by Sum Frequency Generation[J]. Chem. J. Chinese Universities, 2000, 21(S1): 367.
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http://www.cjcu.jlu.edu.cn/EN/Y2000/V21/IS1/367
