首页>
外国专利>
Picosecond broadband cars probe using the picosecond continuum
Picosecond broadband cars probe using the picosecond continuum
展开▼
机译：皮秒级宽带汽车使用皮秒连续体进行探测
展开▼
页面导航
摘要
著录项
相似文献
摘要
A coherent anti-Stokes Raman spectroscopy (CARS) method and apparatus for producing a broadband CARS vibrational spectrum of a sample in a single picosecond laser pulse. A laser pulse having a picosecond duration and a frequency of &ohgr; is directed into a liquid cell containing D. sub.2 O which generates a picosecond continuum pulse having a broad range of frequencies &ohgr;.sub.WL and a picosecond duration. A second harmonic of the laser pulse is produced to form a probe pulse having a frequency of &ohgr;.sub.1 and a picosecond duration. The probe pulse and the continuum pulse are spatially and temporally combined and the combined pulses are directed into a sample to excite the Raman active vibrational resonances in the sample. In response the sample emits a beam of radiation which contains an anti-Stokes spectrum of energy characteristic of the sample. The anti-Stokes spectrum is separated from the beam of radiation for detection and analysis.
展开▼
