26 January 2018 Super-resonant coherent absorption sensing
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Abstract
In this work, we analyze the possibility of exploiting the recently demonstrated super-resonant intracavity coherent absorption effect for quantitative sensing applications. The method relies on a system of two nested resonators (ring and Fabry-Perot) which allows to increase the radiation-matter interaction pathlength by a factor proportional to the product of the two resonator’s individual finesse coefficients. In this way, it is possible to dramatically increase the interaction of intracavity radiation with a weakly absorbing sample without need of an ultra-high finesse optical cavity. Here, we propose a measurement strategy that allows to exploit the super-resonant enhancement provided by the nested-resonators system and cancel out the noise connected with the radiation source at the same time, and compare it to a conventional cavity-enhanced absorption measurement.
Conference Presentation
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P. Malara, C. E. Campanella, A. Giorgini, S. Avino, P. De Natale, G. Gagliardi, "Super-resonant coherent absorption sensing", Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 105401W (26 January 2018); doi: 10.1117/12.2290942; https://doi.org/10.1117/12.2290942
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