CPT pulse excitation method based on VCSEL current modulation for miniature atomic clocks

Author

Ide, Takumi ; Goka, Shigeyoshi ; Yano, Yuichiro

Author_Institution

Grad. Sch. of Sci. & Eng., Tokyo Metropolitan Univ., Hachioji, Japan

fYear

2015

fDate

12-16 April 2015

Firstpage

167

Lastpage

170

Abstract

We propose a coherent population trapping (CPT) pulsed-excitation method based on direct drive-current modulation of a vertical-cavity surface-emitting LASER for miniature atomic clocks (MACs). Because our method needs only a simple device configuration without optical external modulators, it is suitable for MACs, including chip-scale atomic-clocks. Reducing the size, cost, and power consumption is also possible. Additionally, we report on experimental results for Ramsey-CPT fringes excited using the proposed method.

Keywords

atomic clocks; laser cavity resonators; optical modulation; optical saturable absorption; power consumption; surface emitting lasers; CPT pulse excitation method; Ramsey-CPT fringes; VCSEL current modulation; chip-scale atomic-clocks; coherent population trapping; cost reduction; direct drive-current modulation; miniature atomic clocks; power consumption; size reduction; vertical-cavity surface-emitting laser; Atomic clocks; Laser beams; Laser excitation; Laser stability; Modulation; Sociology; Vertical cavity surface emitting lasers; chip-scale atomic-clocks (CSACs); coherent population trapping (CPT); minuature atomic clocks (MACs); pulsed excitation;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium & the European Frequency and Time Forum (FCS), 2015 Joint Conference of the IEEE International

Conference_Location

Denver, CO

Print_ISBN

978-1-4799-8865-5

Type

conf

DOI

10.1109/FCS.2015.7138815

Filename

7138815