A Fourier transform optical setup is converted into a polarization common-path interferometer by simply rotating a polarizer. Then, this configuration allows a phase-shifting interferometry algorithm to be applied to retrieve the phase of the diffraction orders.
The paper has been highlighted as Editor’s pick.
This work is part of PhD Thesis of Esther Nabadda.
On November 28th, 2022, we had the visit of Prof. Eugenio Roldán, from the University of Valencia.
Prof. Roldán participated in the event DIVULGA-NOBEL 2002, where he presented the talk «TeorÃa cuántica: Tres pies al gato», where he explained the 2022 Nobel Prize in Physics awarded to Alain Aspect, John F. Clauser and Anton Zeilinger.
If you missed this excellent presentation by Prof. Roldán, you can now view it in the following link
Whereas previous works focus on states located on the surface of these spheres, here we study vector and scalar modes lying inside the corresponding PS. We show that they can be obtained as the incoherent superposition of two orthogonal vector (or scalar) modes lying on the corresponding sphere surface. The degree of polarization (DoP) of a classical polarization state is thus extended to vector beams and OAM modes.
We used a q-plate to experimentally map any state in the polarization PS onto the HOPS, and a linear polarizer to finally project onto the OAMPS. We design a new polarization state generator, based on two geometric phase gratings and a randomly polarized laser, which generates partially polarized light in an efficient and controlled way.
Esther Nabadda received the best poster award at the Workshop on Structured Light and its Applications, organized by the Institute of Physics and the SPIE-OPTICA Student Chapter of the Friedrich Schiller University Jena – Link
Esther presented the poster entitled «Retrieving the phase distribution of structured light beams by a self-interferometric technique».
MarÃa del Mar Sánchez-López and Esther Nabadda have participated at the Workshop on Structured Light and its Applications organized by the Institute of Physics and the SPIE-OPTICA Student Chapter of the Friedrich Schiller University Jena – Link
MarÃa del Mar was one of the featured speakers with the talk entitled «Tailoring depolarization spatial effects with a liquid-crystal SLM».
Esther presented the poster entitled «Retrieving the phase distribution of structured light beams by a self-interferometric technique».
Ignacio Moreno appears included in the last update of the World’s Top 2% Scientists list (Ioannidis, 2022), a list made based on Elsevier Scopus data base – link.
This information has been covered in the article «Investigación de impacto mundial desde la UA y la UMH» at Diario Información – link (in Spanish).
A total of 37 researchers from UMH appear in the list. UMH news – link (in Spanish).
TecnOpto is offering a predoctoral position to develop a PhD in the field of structured light and its applications, within frame of a research project from Generalitat Valenciana (ref. CIAICO/2021/276).
The research will be developed in conjunction with our colleagues at University of Valencia and at Autonomous University of Barcelona.
If you are motivated for this research in this field, contact us writing to the email:
Ee presented a communication about our interferometric system for measuring the phase content of structured light beams within the conference Advances and Applications in Optics & Photonics, chaired by Manuel Filipe Costa and MarÃa Teresa Flores-Arias.
During the meeting, the European Optical Society General Assembly was cellebrated on September 16th. There, Ignacio Moreno became new member of the EOS Board of Directors for the next two years.
Our last paper published in Optics Letters entitled Retrieving the phase of diffraction orders generated with tailored gratings, presents a self-interferometric technique based on a liquid-crystal SLM, useful to measure the phase content of diffraction gratings.
