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

2018 ◽  
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

scholarly journals The Microfabricated Alkali Vapor Cell with High Hermeticity for Chip-Scale Atomic Clock

2022 ◽  
Vol 12 (1) ◽  
pp. 436
Author(s):  
Shuo Jia ◽  
Zhiyuan Jiang ◽  
Binbin Jiao ◽  
Xiaochi Liu ◽  
Yijie Pan ◽  
...  
Keyword(s):  
Laser Intensity ◽  
Atomic Clock ◽  
Coherent Population Trapping ◽  
Wet Etching ◽  
Anodic Bonding ◽  
Buffer Gas ◽  
Single Chip ◽  
Cell Temperature ◽  
Vapor Cell ◽  
Population Trapping

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.

Optimization of Buffer Gas Compositions in Atomic Vapor Cell for Coherent Population Trapping Atomic Clock

2019 ◽  
Vol 56 (12) ◽  
pp. 120201
Author(s):  
李云超 Yunchao Li ◽  
胡旭文 Xuwen Hu ◽  
张璐 Lu Zhang ◽  
刘召军 Zhaojun Liu ◽  
张开放 Kaifang Zhang ◽  
...  
Keyword(s):  
Atomic Clock ◽  
Coherent Population Trapping ◽  
Buffer Gas ◽  
Atomic Vapor ◽  
Vapor Cell ◽  
Population Trapping

scholarly journals Microfabrication of Alkali Vapor MEMS Cells for chip-scale atomic clock

2021 ◽  
Vol 2103 (1) ◽  
pp. 012188
Author(s):  
A Kazakin ◽  
R Kleimanov ◽  
I Komarevtsev ◽  
A Kondrateva ◽  
Y Enns ◽  
...  
Keyword(s):  
Chemical Etching ◽  
Optical Cavity ◽  
Atomic Clock ◽  
Single Step ◽  
Coherent Population Trapping ◽  
Anodic Bonding ◽  
Buffer Gas ◽  
Wet Chemical ◽  
Wet Chemical Etching ◽  
Population Trapping

Abstract The technology of MEMS atomic cells containing rubidium or caesium vapors in an atmosphere of neon buffer gas has been developed. Two-chamber silicon cells containing an optical cavity, shallow filtration channels and a technical container for a solid-state alkali source have been implemented in a single-step process of anisotropic wet chemical etching. To prevent significant undercutting of the filtration channels during etching of the through silicon cavities, the shapes of the compensating elements at the convex corners of the silicon nitride mask have been calculated and the composition of the silicon etchant has been experimentally found. The sealing of the cells has been carried out by silicon-glass anodic bonding at a temperature of 250 °C. For this purpose the LK5 glass which has an increased ionic conductivity in comparison with the conventional glass Borofloat 33 was used. The best microfabricated cells allowed us to obtain estimates of the relative instability of the coherent population trapping resonance frequency at the level of 5 · 10-11 at 1 s.

High Contrast Atomic Clock Signal Based on Coherent Population Trapping

2015 ◽  
Vol 35 (s1) ◽  
pp. s102002
Author(s):  
王鑫 Wang Xin ◽  
赵文宇 Zhao Wenyu ◽  
薛文祥 Xue Wenxiang ◽  
鱼志健 Yu Zhijian ◽  
杜志静 Du Zhijing ◽  
...  
Keyword(s):  
Atomic Clock ◽  
Coherent Population Trapping ◽  
Clock Signal ◽  
High Contrast ◽  
Population Trapping

scholarly journals Symmetric autobalanced Ramsey interrogation for high-performance coherent-population-trapping vapor-cell atomic clock

2018 ◽  
Vol 112 (24) ◽  
pp. 244102 ◽  
Author(s):  
M. Abdel Hafiz ◽  
G. Coget ◽  
M. Petersen ◽  
C. E. Calosso ◽  
S. Guérandel ◽  
...  
Keyword(s):  
High Performance ◽  
Atomic Clock ◽  
Coherent Population Trapping ◽  
Vapor Cell ◽  
Population Trapping

scholarly journals Microfabricated cells for chip-scale atomic clock based on coherent population trapping: Fabrication and investigation

2015 ◽  
Vol 1 (1) ◽  
pp. 37-41 ◽  
Author(s):  
S.V. Ermak ◽  
V.V. Semenov ◽  
E.N. Piatyshev ◽  
A.N. Kazakin ◽  
I.M. Komarevtsev ◽  
...  
Keyword(s):  
Atomic Clock ◽  
Coherent Population Trapping ◽  
Population Trapping

scholarly journals Investigation of coherent population trapping signals in 87Rb cells with buffer gas

2016 ◽  
Vol 769 ◽  
pp. 012046
Author(s):  
M I Fedorov ◽  
S V Ermak ◽  
M V Petrenko ◽  
E N Pyatyshev ◽  
V V Semenov
Keyword(s):  
Coherent Population Trapping ◽  
Buffer Gas ◽  
Population Trapping
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