Model for Simulating Interaction Volumes for Coherent Anti-Stokes Raman Scattering

✍ Scribed by W. Kaabar; R. Devonshire

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 422 KB
• Volume: 28
• Category: Article
• ISSN: 0377-0486
• DOI: 10.1002/(sici)1097-4555(199705)28:5<339::aid-jrs102>3.0.co;2-e

✦ Synopsis

A novel computational approach for modelling coherent anti-Stokes Raman scattering (CARS) interaction volumes is presented. The model combines the treatment of the CARS signal generation volume given by Teets (Appl Opt. 25, 855 (1986)) with the realistic electric Ðeld distributions produced by the model of focused laser beams given by Evans and Grey-Morgan (Phys. Med. Biol. 14, 205 (1969)). The new model provides a detailed picture of local contributions to the total CARS signal as well as the CARS spectrum. A particular feature of the model is that it uses readily accessible parameters of the incident beams and the focusing optics. Numerical calculations of CARS signal strength and spatial resolution for a wide range of experimental conditions for the commonly used phasematching geometries, namely, collinear CARS, USED CARS and folded BOXCARS are reported.