Six Wave Mixing Generated 722 nm Emissions in Sodium Vapor

We have observed a tunable 722 nm red emission in sodium vapor under a 578.7 nm two-photon resonance excitation. This tunable 722 nm emission has an intensity about two orders of magnitude smaller than that of the persistent strong 330.2 nm emission (the conversion efficiency of 330.2 nm emission is about 5 % as reported by Hartig in 1978). Tunability of this emission can be well described by the generating scheme ω722nm = 2ωLaser - ω4p - 4s +ω4p-3d - ωLaser. The excitation function of the 722 nm emission has a typical multi-wave mixing pattern with a competing effect appearing at higher temperatures under a two-photon resonance excitation. The dependence of the 722 nm emission intensity on the laser power is a cubic relation which agrees with the above mentioned scheme. Numerical analysis indicates that the observation of this red emission can be attributed to the argon buffer gas resonance enhancement in matching phases between the pump and signal beams. Details will be discussed.

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被引用紀錄

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江亮威（2011）。磺化聚醯亞胺/聚乙烯醇半互穿型網狀結構體作為燃料電池之質子交換膜的研發〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2011.03132

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延伸閱讀

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Six Wave Mixing Generated 722 nm Emissions in Sodium Vapor

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