2026-04-13T15:07:17Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/1174252026-01-30T09:10:00Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Valles Marin, Adam author Jiménez Machado, Gerard author Salazar Serrano, Luis Jose author Pérez Torres, Juan author 2018-02-14 We demonstrate a different scheme to perform optical sectioning of a sample based on the concept of induced coherence [Zou et al., Phys. Rev. Lett. 67, 318 (1991)]. This can be viewed as a different type of optical coherence tomography scheme where the varying reflectivity of the sample along the direction of propagation of an optical beam translates into changes of the degree of first-order coherence between two beams. As a practical advantage the scheme allows probing the sample with one wavelength and measuring photons with another wavelength. In a bio-imaging scenario, this would result in a deeper penetration into the sample because of probing with longer wavelengths, while still using the optimum wavelength for detection. The scheme proposed here could achieve submicron axial resolution by making use of nonlinear parametric sources with broad spectral bandwidth emission. Peer Reviewed Postprint (published version) Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica Quantum optics Optical coherence Biological physics Atomic molecular & optical. Òptica quàntica Optical sectioning in induced coherence tomography with frequency-entangled photons