Dual microwave frequency modulation of the VCSEL injection current for a CPT-based atomic clock

被引：0

作者：

Vaskovskaya, Maria I. ^{[1
]}

Chuchelov, Dmitry S. ^{[1
]}

Tsygankov, Eugene A. ^{[1
]}

Vassiliev, Vitaly V. ^{[1
]}

Zibrov, Sergey A. ^{[1
]}

Velichansky, Vladimir L. ^{[1
]}

机构：

[1] Russian Acad Sci, Lebedev Phys Inst, Moscow 119991, Russia

来源：

OPTICS LETTERS | 2024年 / 49卷 / 17期

关键词：

Coherent population trapping based atomic clock - Coherent population trapping resonance - Doubled frequencies - Emission spectrums - Injection currents - Laser injection - Metrological characteristics - Microwaves frequency - Single-frequency - Vertical-cavity surface emitting laser;

D O I：

10.1364/OL.532983

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Previously, we have proposed a method to control the emission spectrum of the vertical-cavity surface-emitting laser (VCSEL) with the synchronized modulation of the injection current at single and doubled frequencies. In this work, the above method is used to improve the metrological characteristics of the coherent population trapping (CPT) resonance in Rb-87. The dual-frequency (DF) modulation reduces the carrier power and suppresses the light shift of the resonance frequency, if it is unattainable with the single-frequency modulation. In addition, a higher resonance contrast is achieved by equalizing the powers of the resonant components of the spectrum. (c) 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

引用

页码：4791 / 4794

页数：4

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