Nonlinear optics and organic materials
We shall consider an interesting topic relating nonlinear optics and organic materials: how nonlinear optics can be used to study organic materials. One of the main differences between linear and nonlinear responses of a medium to incoming radiation is in their symmetries. It leads to the possibility that some properties of the medium could be more sensitively probed by nonlinear, rather than linear, optical means, or vise versa. A well-known example is that some vibrational modes of a medium could be Raman-active but infrared-inactive, and would be more readily observed by Raman scattering, which is a two-photon transition process. In this paper, we shall discuss, with the help of three examples, how we can use second harmonic generation (SHG) and sum frequency generation (SFG) to obtain unique information about a material. We shall focus on thin films, surfaces, and interfaces.
- Research Organization:
- Lawrence Berkeley Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 10107743
- Report Number(s):
- LBL-36050; CONF-9405275-1; ON: DE95004677; CNN: Grant DMR-9025106
- Resource Relation:
- Conference: 4. IKETANI conference on optically nonlinear organic materials and applications,Kamuela, HI (United States),16-18 May 1994; Other Information: PBD: Jul 1994
- Country of Publication:
- United States
- Language:
- English
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