A5043106482- Laser-Matter Interactions and Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Laser-Plasma Interactions and Diagnostics
- Radiation Therapy and Dosimetry
- Laser Material Processing Techniques
- Optical measurement and interference techniques
- Advanced Optical Sensing Technologies
- Thermography and Photoacoustic Techniques
- Photoacoustic and Ultrasonic Imaging
- Optical Systems and Laser Technology
- Advanced Radiotherapy Techniques
- Integrated Circuits and Semiconductor Failure Analysis
- Advanced Fiber Laser Technologies
- Force Microscopy Techniques and Applications
- Solid State Laser Technologies
- Optical Polarization and Ellipsometry
- Advanced X-ray Imaging Techniques
- Advanced optical system design
- Adaptive optics and wavefront sensing
- Fusion materials and technologies
- Ocular and Laser Science Research
Universidad de Salamanca
2022-2023
Instituto de Física Fundamental
2022-2023
Universidade de Santiago de Compostela
2022-2023
Universidad Nacional Autónoma de México
2016-2020
X-ray sources with high photon fluxes and small source sizes have been widely pursued in the last decades. With synchrotron XFEL facilities being complex, scarce not easily accessible, laser-driven x-ray emerged as a promising option because of their compactness, yield micrometric size. In this work, we present optimisation an driven by means 0.8 mJ, 35 fs laser pulses focused on solid Cu target air. A detailed characterisation main beam parameters is included. Kα flux 2.3·109 photons/s has...
In this work, we present a commercial CMOS (Complementary Metal Oxide Semiconductor) Raspberry Pi camera implemented as Near-Infrared detector for both spatial and temporal characterization of femtosecond pulses delivered from Erbium Doped Fiber laser (fs-EDFL) @ 1.55 µm, based on the Two Photon Absorption (TPA) process. The capacity device was assessed by measuring beam profile fs-EDFL comparing experimental results with theoretical Fresnel diffraction pattern. We also demonstrate potential...
This work presents a commercial webcam CMOS (Complemented-Metal-Oxide-Semiconductor) implemented as spectrometer for femtosecond pulses characterization at the Near-Infrared region (NIR, 1.1 - 1.6 μm), applying spectral interferometry. The interferometry setup consists of collinear Michelson interferometer in which two replicas, generated from home-made Optical Parametric Oscillator (fs-OPO), are relatively delayed with respect to each other. A reflecting grating disperses pulse replicas and...
We propose the design of a new technique for measuring spectral resolution Czerny-Turner Spectrometer based on interferometry ultrashort laser pulses. It is well known that pulse measurement like SPIDER and TADPOLE techniques requires precise characterized spectrum, especially in fringe resolution. developed technique, to our knowledge, which by nominal spacing interferogram one can characterize spectrometer using Ryleigh's criteria. This was tested commercial spectrometer. The results...
We have developed an algorithm to filter the noise in spectral intensity of ultrashort laser pulses. The filtering procedure consists smoothing by using Savitzky-Golay filter, removing offset, and a super-Gaussian window truncate frequencies spectrum. modeled bandwidth-limited pulses with Gaussian modulated show estimation carrier wavelength, reconstruction pulse profile, duration after applying algorithm. Theoretical results are presented for durations between 5 fs 100 wavelength 825 nm...
In this work we present the design and manufacture of a compact Shack-Hartmann wavefront sensor using Raspberry Pi microlens array. The main goal is to recover laser beam characterize its spatial phase simple embedded camera. recovery algorithm based on modified version Southwell method was written in Python as well user interface. Experimental results reconstructed wavefronts are presented.
Laser–plasma proton sources and their applications to preclinical research has become a very active field of in recent years. In addition small dimensions as compared classical ion accelerators, they offer the possibility study biological effects ultra-short particle bunches correspondingly high dose rates. We report on design an experimental setup for irradiation cell cultures at L2A2 laboratory University Santiago de Compostela, making use 1.2 J Ti: Sapphire laser with 10 Hz repetition...
Laser Driven Plasma Accelerators (LDPA) can generate both characteristic and Bremsstrahlung x-rays in ultrashort bunches. Because of the high intensity laser pulses, these laser-induced x-ray sources achieve peak dose rates compatible with FLASH regime. At Laboratory for Acceleration Applications (L2A2/USC), a setup irradiation vitro cell cultures laser-driven source has been developed. The suitability this studying influence Ultra High Dose Rates (UHDR) on DNA damage proven through cultures.
In this work, we present a CMOS sensor implemented for 2D-temporal characterization of femtosecond pulses, based on the Two Photon Absorption (TPA) process. We demonstrate camera TPA capability to measure Fringe Resolved Autocorrelation (FRAC).
In this work, we study the effects of noise present on spectral interferometry signals, for femtosecond pulse retrieval such as in SPIDER technique (spectral phase direct e-field reconstruction). Although previous works report robustness, have found that noisy signals with low signal-to-noise ratio (SNR), acquired interferogram, could cause variations temporal intensity retrieval. We demonstrate even a filtered signal, following standard procedures, at some point interferogram affect As...