English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We present a precise measurement of the hyperfine structure of cesium 7S1/2 excited state by employing electromagnetically induced spectroscopy (EIS) with a cesium three-level cascade (6S1/2 − 6P3/2 − 7S1/2) atom in a room temperature vapor cell. A probe laser, λp = 852 nm, was coupled to a transition |6S1/2〉 → |6P3/2〉, related frequency locked to the resonance hyperfine transition of |6S1/2〉 → |6P3/2〉 with a Fabry–Perot (FP) cavity and an electro-optic modulator (EOM). A coupling laser, λc = 1470 nm, drove the |6P3/2〉 → |7S1/2〉 transition with the frequency scanned over the |6P3/2〉 → |7S1/2〉 transition line. The hyperfine level interval was extracted to be 2183.61 ± 0.50 MHz by analyzing EIS spectroscopy. The optical–optical double-resonance (OODR) spectroscopy is also presented for comparison, with the corresponding value of the hyperfine level interval being 2183.48 MHz ± 0.04 MHz, and the measured hyperfine splitting of excited 7S1/2 state is shown to be in excellent agreement with the previous work.

Precise Measurement of Hyperfine Structure of Cesium 7S1/2 Excited State