CMOS Saturation Spectrometer With a Miniaturized Fabry–Pérot Cavity for the Lamb-Dip Interrogation of OCS Molecules to Enhance the Q of CSMC

2026-06-27 Hits:

Affiliation of Author(s):University of Electronic Science and Technology of China (UESTC)

Teaching and Research Group:Integrated Physics Group (IPG)

Journal:IEEE Transactions on Microwave Theory and Techniques (TMTT)

Place of Publication:USA

Key Words:Carbonyl sulfide (OCS), chip-scale molecular clock (CSMC), Fabry–Perot (FP) cavity, Lamb-dip

Abstract:Chip-scale molecular clock (CSMC), as a portable, “atomic”-grade time standard, locks to the sub-THz rotational spectra of the polar gaseous molecules (e.g., carbonyl sulfide, OCS). It features a low cost, a short start-up time, and environmental robustness. The quality factor (Q) of the unsaturated rotational spectra of OCS ( Q=105∼106 ) is lower than that of the coherent population trapping (CPT) in alkaline atoms ( Q=106∼107 ) used in chip-scale atomic clocks (CSACs). Thanks to its higher spectra detection signal-to-noise ratio (SNR), the CSMCs demonstrate highly competitive short-to-medium

Note:https://ieeexplore.ieee.org/abstract/document/11044868
Featured article of TMTT:
https://mtt.org/featured_article/cmos-saturation-spectrometer-with-a-miniaturized-fabry-perot-cavity-for-the-lamb-dip-interrogation-of-ocs-molecules-to-enhance-the-q-of-csmc/

All the Authors:Geyu Qiang,Zi Zhang

First Author:Fang Shen

Indexed by:Journal

Correspondence Author:Cheng Wang

Document Code:10.1109/TMTT.2025.3577939

Discipline:Engineering

First-Level Discipline:Electronic science and technology

Volume:73

Issue:10

Page Number:8043 - 8058

Translation or Not:no

Date of Publication:2025-10-01

Date of Publication:2025-10-01