A single 456 nm laser can excite hot cesium vapor to emit a bright 852 nm line, with about 1% down-conversion efficiency and a spectrum that shows self-absorption at higher temperature.
Sub-doppler spec- troscopy of the cs atom 6s1/2–7p1/2 transition at 459 nm in a microfabricated vapor cell,
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Blue laser induced bright red fluorescence in hot cesium vapor
A single 456 nm laser can excite hot cesium vapor to emit a bright 852 nm line, with about 1% down-conversion efficiency and a spectrum that shows self-absorption at higher temperature.