Spectrum Of Na-2 By Optical Heterodyne Techniques
1992 SHANGHAI INTERNATIONAL SYMPOSIUM ON QUANTUM OPTICS(1992)
摘要
Optical heterodyne spectroscopy is one of the ultrasensitive and high resolution laser spectroscopies. During past years, it has extended from saturation absorption to two-photon transitions in a three level quantum system of atoms and ions. The particularly interesting case is the modulation transfer spectroscopy, where the optical heterodyne detection is performed via nearly degenerate four-wave mixing (NDFWM) in the nonlinear medium. In this report, the modulation transfer spectroscopy is used to observe the optical heterodyne saturation absorption and two-photon transition spectra simultaneously in Na 2 without Doppler background. The line shapes of optical heterodyne signal are discussed in detail.
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关键词
four wave mixing,heterodyning,spectrum,chemical species,high resolution,doppler effect,lasers,photons,ions,laser spectroscopy,modulation,spectroscopy,absorption
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