Resumen de Ultra-high resolution dual comb spectroscopy based on gainswitching optical frequency combs
Clara Quevedo Galán, Alejandro Rosado, Laura Monroy, Pablo López Querol, Antonio Pérez Serrano, José Manuel García Tijero, Ignacio Esquivias Moscardó
This paper briefly describes the generation of very low repetition rate optical frequency combs and the implementation of a high-resolution dual comb spectroscopy system based on them. The optical frequency combs are generated by pulsed gain-switching of commercial laser diodes under optical injection in a master-slave configuration. As application examples, we show the spectrum of the CO2 absorption line at 1572.02 nm recorded with a 100 MHz resolution, and, as the most relevant result, the reflection profile of a Fabry-Perot filter measured with an ultra-high resolution of 4 MHz.
