Absorption saturation measurement using the tapered optical nanofiber in a hot cesium vapor
We report the observation of ultralow-power absorption saturation in a tapered optical nanofiber（TOF）mounted in a hot cesium vapor in a vacuum chamber. The small optical mode area of TOF produces a great influence on optical properties, allowing optical interactions with nanowatt-level power. The comparison of transmission characteristic for the TOF system and free-space vapor is investigated at different input power and atomic density. The unique performance of the Cs-TOF system makes it promising candidate in resonant nonlinear optical applications with ultralow power.
作者单位：Institute of laser spectroscopy
Zhao Yanting,Song Zixuan . Absorption saturation measurement using the tapered optical nanofiber in a hot cesium vapor[J].Chinese Optics Letters,2019,17(3):03.