Konorov Stanislav O, Blades Michael W, Turner Robin F B
Michael Smith Laboratories, The University of British Columbia, Vancouver, BC, Canada.
Opt Express. 2011 Dec 19;19(27):25925-34. doi: 10.1364/OE.19.025925.
Coherent anti-Stokes Raman scattering (CARS) with femtosecond interaction pulses has become a popular and powerful spectroscopic method. Non-resonant background is one of the most limiting factors for implementing this method more widely. We propose a new approach that suppresses the non-resonant background contribution to the measured signal in CARS spectroscopy while simultaneously yielding high spectral resolution. The method is based on femtosecond pulse shaping of probe, Stokes and pump beams. Destructive interference suppresses the non-resonant background, resulting only in the resonant contribution being detected.
具有飞秒相互作用脉冲的相干反斯托克斯拉曼散射（CARS）已成为一种流行且强大的光谱方法。非共振背景是更广泛应用该方法的最限制因素之一。我们提出了一种新方法，该方法可抑制非共振背景对CARS光谱中测量信号的贡献，同时实现高光谱分辨率。该方法基于对探测光、斯托克斯光和泵浦光的飞秒脉冲整形。相消干涉抑制了非共振背景，仅检测到共振贡献。
