Journal
OPTICS LETTERS
Volume 46, Issue 21, Pages 5372-5375Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.442557
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Funding
- National Natural Science Foundation of China [61771067, 61801042]
- Youth Research and Innovation Program of BUPT [2015RC12, 2017RC10]
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The FADOF based on a hollow cathode lamp (HCL-FADOF) serves as a new alternative to traditional vapor-cell-based FADOF, offering the advantage of normal operation at room temperature without heating. Experimental results demonstrate excellent stability within a large temperature range and quick start-up characteristics in low-temperature environments for the HCL-FADOF.
As a new, to the best of our knowledge, alternative to the saturated vapor-cell-based Faraday anomalous dispersion optical filter (FADOF), the FADOF based on a hollow cathode lamp (HCL-FADOF) not only enables the FADOF to work normally at room temperature without heating, but also has some new features due to the inherent characteristics of the HCL. In this Letter, we implement an HCL-FADOF operating on the rubidium D2 line and experimentally investigate the effect of ambient temperature on its performance and cold-start characteristics. Results show that the HCL-FADOF can provide excellent stability within a large temperature range, even at temperatures below 0 degrees C. A comparison of the start performance between the HCL-FADOF and FADOF using saturated vapor cells is also provided. This work shows unique features of the HCL-FADOF in a low-temperature environment and its quick-start advantage, which provides a solid foundation for extensive applications. (C) 2021 Optical Society of America
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