Amplitude- versus frequency-modulated pumping light for coherent population trapping resonances at high buffer-gas pressure

Herein, a microfabricated millimeter-level vapor alkali cell with a high hermeticity is fabricated through a wet etching and single-chip anodic bonding process. The vapor cell, containing Rb and N2, was investigated in a coherent population trapping (CPT) setup for the application of a chip-scale atomic clock (CSAC). The contrast of CPT resonance is up to 1.1% within the only 1 mm length of light interacting with atom. The effects of some critical external parameters on the CPT resonance, such as laser intensity, cell temperature, and buffer gas pressure, are thoroughly studied and optimized. The improved microfabricated vapor cell also exhibited great potential for other chip-scale atomic devices.

Download Full-text

Atomic clock stability under dynamic excitation of coherent population trapping resonance in cells without buffer gas

Steep Dispersion Engineering and Opto-Atomic Precision Metrology XI ◽

10.1117/12.2288872 ◽

2018 ◽

Cited By ~ 1

Author(s):

Sergey M. Kobtsev ◽

Daba Radnatarov ◽

Sergey Khripunov ◽

Ivan Popkov ◽

Valerii Andryushkov ◽

...

Keyword(s):

Atomic Clock ◽

Coherent Population Trapping ◽

Buffer Gas ◽

Dynamic Excitation ◽

Clock Stability ◽

Population Trapping ◽

In Cells

Download Full-text

Erratum: Coherent-population-trapping resonances in buffer-gas-filled Cs-vapor cells with push-pull optical pumping [Phys. Rev. A87, 013416 (2013)]

Physical Review A ◽

10.1103/physreva.87.029903 ◽

2013 ◽

Vol 87 (2) ◽

Cited By ~ 5

Author(s):

Xiaochi Liu ◽

Jean-Marc Mérolla ◽

Stéphane Guérandel ◽

Christophe Gorecki ◽

Emeric de Clercq ◽

...

Keyword(s):

Optical Pumping ◽

Coherent Population Trapping ◽

Buffer Gas ◽

Vapor Cells ◽

Population Trapping

Download Full-text

Transport of laser emission with broadband spectrum in optically dense atomic medium under the coherent population trapping

International Journal of Modern Physics Conference Series ◽

10.1142/s201019451660137x ◽

2016 ◽

Vol 41 ◽

pp. 1660137 ◽

Cited By ~ 1

Author(s):

K. A. Barantsev ◽

A. N. Litvinov ◽

E. N. Popov

Keyword(s):

Laser Emission ◽

Coherent Population Trapping ◽

Dense Medium ◽

Fluorescence Signal ◽

Buffer Gas ◽

Broadband Spectrum ◽

Atomic Medium ◽

Transfer Equations ◽

A Cell ◽

Population Trapping

The paper presents a theory describing the formation of the coherent population trapping resonance for the finite laser bandwidth in an optically-dense medium of atoms inside a buffer gas cell. The equations of the atomic density matrix are established, as well as the transfer equations of laser emission spectrum inside a cell with working and buffer gas at a determined temperature. The dependence of the quality of the coherent population trapping resonance on the laser bandwidth has been studied in the case of detecting the signal of the transmitted emission and the fluorescence signal.

Download Full-text