The Optics and Photonics Laboratory (LEO & F) is invested in the study of insulating and semiconductor polymeric materials, and nanomaterials. We have been studying properties both from a fundamental point of view and from their various applications. For instance, we have been studying photodegradation kinetics in real time and manufacturing 3D dosimeters based on semiconductor polymers. We have been carrying out optical birefringence measurements on polymers of poly (methyl methacrylate) doped with azo-chromophores to make 3D optical memory devices, analogous to DVD but with greater storage capacity. We have also been microfabricating polymeric materials doped with nanoparticles for the manufacture of optoelectronic devices. In addition to the optical mounts performed in the laboratory, thin film preparations are also carried out, characterized by UV-vis and infrared optical spectroscopy techniques, atomic force microscopy and transmission electronic microscopy.
Coordinator: Prof. Marcelo Gonçalves Vivas
LEO & F has a total area of 45 m², of which 35 m² are dedicated to the optical part, and another 10 m² to sample preparation. The optics room has an anti-vibration optical table, pulsed sub-nanosecond laser (4W, 900 ps, 1-2000 Hz, 1064/532 nm), stabilized He-Ne laser (632 nm, 5 mW), several diode lasers (400 nm, 532 nm, 660 nm, 800 nm), photodetectors in general, ultrafast photodetectors (200 ps), power meters, portable spectrometers (200-1100 nm), 250 MHz two-channel oscilloscope, various optical fibers, high resolution CCD cameras, high stability tungsten lamp, optical and optomechanical devices in general. This room is cooled by an 18000 BTU air conditioning system. The sample preparation room has a fume hood, refrigerator, glassware, analytical balance (0.0001 g), ultrasound and cabinets, and is cooled by an 12000 BTU air conditioner.