Work

Laser frequency offset locking via tripod-type electromagnetically induced transparency

Year: 2014

Type: article

Abstract: We have demonstrated laser frequency offset locking via the Rb87 tripod-type double-dark resonances electromagnetically induced transparency (EIT) system. The influence of coupling fields' power and detuning on the tripod-type EIT profile is studied in detail. In a wide coupling field's detuning range, the narrower EIT dip has an ultranarrow linewidth of ∼590 kHz, which is about one order narrower than the natural linewidth of Rb87. Without the additional frequency stabilization of the coupling lasers, we achieve the relative frequency fluctuation of 60 kHz in a long time of ∼2000 s, which is narrower than the short-time linewidth of each individual laser.

Source: Applied Optics

DOI: 10.1364/ao.53.002632

Authors: Kang Ying, Yueping Niu, Dijun Chen, Haiwen Cai, Ronghui Qu, Shangqing Gong

Institutions: Chinese Academy of Sciences, Shanghai Institute of Optics and Fine Mechanics, East China University of Science and Technology

Language: English

Topic: Advanced Frequency and Time Standards

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, Fundamental Research Funds for the Central Universities

Awards: G1631066207, 少光子腔诱导透明及其应用研究, G5125074651, G5394914102, G6088397325