期刊
OPTICS LETTERS
卷 39, 期 9, 页码 2688-2690出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.39.002688
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资金
- NIST Innovation in Measurement Science
- NIST Greenhouse Gas Measurements
- Foundation for Polish Science TEAM Project
- EU European Regional Development Fund
Dual-drive Mach-Zehnder modulators were utilized to produce power-leveled optical frequency combs (OFCs) from a continuous-wave laser. The resulting OFCs contained up to 50 unique frequency components and spanned more than 200 GHz. Simple changes to the modulation frequency allowed for agile control of the comb spacing. These OFCs were then utilized for broadband, multiheterodyne measurements of CO2 using both a multipass cell and an optical cavity. This technique allows for robust measurements of trace gas species and alleviates much of the cost and complexity associated with the use of femtosecond OFCs produced with mode-locked pulsed lasers.
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