| Autor: |
Stéphane Schilt, Richard Maulini, Philippe Giaccari, Renaud Matthey, Thomas Südmeyer, Atif Shehzad |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). |
| DOI: |
10.1109/cleo/europe-eqec52157.2021.9542563 |
| Popis: |
Laser interferometry enables measuring relative distance variations with an extreme sensitivity corresponding to a fraction of the considered optical wavelength, but has a very short unambiguous range of only half a wavelength. In this work, we investigated the use of two-color interferometry, a method in which the use of two different but close optical wavelengths enables the unambiguous range to be extended to a synthetic wavelength Λ much longer than the optical wavelength λ, allowing for absolute distance retrieval. We present a first demonstration of this method in the mid-infrared (MIR) based on the use of quantum cascade lasers (QCLs). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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