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Proceedings Paper

The PSDAVLL signal detection with synchronous ferroelectric liquid crystal switching as a laser frequency stabilization method
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Paper Abstract

In this paper we present the DAVLL (Dichroic Atomic Vapor Laser Lock) signals detection method for laser frequency stabilization which has been improved by synchronous detection system based on the surface-stabilized ferroelectric liquid crystal (SSFLC). The SSFLC cell is a polarization switch and quarter waveplate component and it replaces the well-known two-photodiode detection configuration known as the balanced polarimeter. The presented polarization switching dichroic atomic vapor laser lock technique (PSDAVLL) was practically used in VCSEL-based frequency stabilization system with vapor isotopes (85,87Rb) rubidium cell. The applied PSDAVLL method has allowed us to obtain a frequency stability of 2.7 × 10−9 and a reproducibility of 1.2 × 10−8, with a dynamic range ratio (DNR) of detected signals of around 81.4 dB, what is 9.6 dB better than obtained in the balanced polarimeter configuration. The described PSDAVLL technique was compared with 3-f (on the 3rd harmonic) and passive frequency stabilization methods. Additionally, the presented setup consists only one-photodiode detection path what reduces parasitic phenomena like offsets between photodiode amplifiers, amplifier gain changes due to ambient conditions, aging effects of electronic components etc. as a consequence leads to better frequency reproducibility, stabilization accuracy and less detection system sensitivity to ambient condition changes.

Paper Details

Date Published: 8 December 2016
PDF: 9 pages
Proc. SPIE 10159, Laser Technology 2016: Progress and Applications of Lasers, 1015912 (8 December 2016); doi: 10.1117/12.2262167
Show Author Affiliations
G. Dudzik, Wrocław Univ. of Technology (Poland)
J. Rzepka, Wrocław Univ. of Technology (Poland)
K. M. Abramski, Wrocław Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 10159:
Laser Technology 2016: Progress and Applications of Lasers
Ryszard S. Romaniuk; Krzysztof Kopczynski; Jan K. Jabczyński; Zygmunt Mierczyk, Editor(s)

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