An active disordered medium, i.e., a diffusive material where a population inversion is established by a pumping system, can emits a optical radiation known as random laser. Since such a optical source is very sensitive to the scattering, a sensor based on random lasing can be developed to investigate diffusive samples. Here we report a design of a sensor with non-invasive characteristics achieved by means of separation between the active medium and the investigated sample.
Non-invasive Optical Sensing Method Based on Random Lasing / Tommasi, Federico; Fini, Lorenzo; Ignesti, Emilio; Martelli, Fabrizio; Cavalieri, Stefano. - In: PIERS ONLINE. - ISSN 1931-7360. - ELETTRONICO. - 2019-:(2019), pp. 219-222. ( 2019 PhotonIcs and Electromagnetics Research Symposium - Spring, PIERS-Spring 2019 ita 2019) [10.1109/piers-spring46901.2019.9017813].
Non-invasive Optical Sensing Method Based on Random Lasing
Tommasi, Federico
;Fini, Lorenzo;Ignesti, Emilio;Martelli, Fabrizio;Cavalieri, Stefano
2019
Abstract
An active disordered medium, i.e., a diffusive material where a population inversion is established by a pumping system, can emits a optical radiation known as random laser. Since such a optical source is very sensitive to the scattering, a sensor based on random lasing can be developed to investigate diffusive samples. Here we report a design of a sensor with non-invasive characteristics achieved by means of separation between the active medium and the investigated sample.
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