123 citations · 130 across the 5 of their papers we have counts for
6 papers
Non-mechanical steering of the optical beam in spectral-domain Optical Coherence Tomography
Daniel F. Urrego, Gerard J. Machado, Juan P. Torres
We demonstrate in a {\it proof-of-concept} experiment spectral-domain optical coherence tomography where steering of the optical beam that probes the sample in a transverse scan do…
Complementarity relationship between coherence and path distinguishability in an interferometer based on induced coherence
Gerard J. Machado, Lluc Sendra, Adam Vallés +1
We consider an interferometer based on the concept of induced coherence, where two photons that originate in different second-order nonlinear crystals can interfere. We derive a co…
Spectral-domain optical coherence tomography based on nonlinear interferometers
Arturo Rojas-Santana, Gerard J. Machado, Maria V. Chekhova +2
Optical coherence tomography (OCT) is a 3D imaging technique that was introduced in 1991 [Science 254, 1178 (1991); Applied Optics 31, 919 (1992)]. Since 2018 there has been growin…
Optical Coherence Tomography with a nonlinear interferometer in the high parametric gain regime
Gerard J. Machado, Gaetano Frascella, Juan P. Torres +1
We demonstrate optical coherence tomography based on an SU(1,1) nonlinear interferometer with high-gain parametric down-conversion. For imaging and sensing applications, this schem…
Frequency correlation requirements on the biphoton wavefunction in an induced coherence experiment between separate sources
Arturo Rojas-Santana, Gerard J. Machado, Dorilian Lopez-Mago +1
There is renewed interest in using the coherence between beams generated in separate down-converter sources for new applications in imaging, spectroscopy, microscopy and optical co…
Knotting fractional-order knots with the polarization state of light
Emilio Pisanty, Gerard J. Machado, Verónica Vicuña-Hernández +4
The fundamental polarization singularities of monochromatic light are normally associated with invariance under coordinated rotations: symmetry operations that rotate the spatial d…