Optical coherence tomography with a nonlinear interferometer
Tutor / directorPérez Torres, Juan
CovenanteeInstitut de Ciències Fotòniques (ICFO)
Document typeMaster thesis
Rights accessOpen Access
We derive what is the signal and the sensitivity of a nonlinear interferometer (Mach-Zehnder or Michelson), that is a novel approach to perform Optical Coherence Tomography (OCT). The physical idea behind this goes back to seminal work done by L. Mandel?s group in 1991 . We demonstrate that the use of input coherent light improve the strength of the detected signal in terms of intensity, noise and sensitivity. Finally, we present the counterintuitive differences between considering a single frequency beam or a beam with a certain bandwidth.
The project aims at studying the functioning of an optical coherence scheme that make use of a nonlinear interferometer. We will consider the best configuration, the sensitivity that can be achieved and the maximum power that can be generated.