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Review of Scientific Instruments, ISSN 0034-6748, 01/2019, Volume 90, Issue 1, pp. 015104 - 015104
Journal Article
Applied Optics, ISSN 1559-128X, 11/2017, Volume 56, Issue 33, pp. 9199 - 9204
This paper discusses the main differences between two different methods for determining the optical properties of tissue optical phantoms by fitting the... 
REFLECTANCE | CUMULANT EXPANSION SOLUTION | RESOLUTION | TISSUE | TRANSPORT-EQUATION | TURBID MEDIA | TIME | OPTICS
Journal Article
Applied Optics, ISSN 1559-128X, 06/2017, Volume 56, Issue 17, pp. 5047 - 5053
We show that in a nonlinear microscopy system the effects of chromatic and spherical aberrations are revealed by a difference in the focal positions... 
SILICON INTEGRATED-CIRCUITS | SOLID IMMERSION LENS | ADAPTIVE OPTICS | RESOLUTION | LIGHT | ULTRASHORT PULSES | OPTICS | ASSISTED DEVICE ALTERATION | Terahertz spectroscopy | Usage | Photon detectors | Research | Aberration | Microscope and microscopy
Journal Article
Applied Optics, ISSN 1559-128X, 06/2018, Volume 57, Issue 16, pp. 4542 - 4550
We present a simple low-coherence time-domain interferometric reflectometer with a rapidly scanning optical delay line (RSODL) based on a non-parallel... 
TOMOGRAPHY | SYSTEM | DESIGN | PULSE COMPRESSOR | DISPERSION | OPTICS | SWEPT-SOURCE | PHASE MODULATOR | Microelectromechanical systems | Gratings (spectra) | Scanning | Coherence | Reflectometers | Dispersion | Delay | Group delay | Interferometry
Journal Article
Review of Scientific Instruments, ISSN 0034-6748, 08/2015, Volume 86, Issue 8, pp. 085114 - 085114
In this work, we present an electromagnetic focusing mechanism (EFM), from a commercial webcam, implemented as a delay line of a femtosecond laser pulse... 
DEVICES | INSTRUMENTS & INSTRUMENTATION | PHYSICS, APPLIED | AUTOCORRELATION | Femtosecond | Femtosecond pulses | Data buses | Power consumption | Webcams | Doped fibers | Universal Serial Bus | Oscillators | Erbium | Delay | INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY | LASERS | PERFORMANCE | STABILITY | PHOTONS | RESOLUTION | ERBIUM | FOCUSING | PULSES | OSCILLATORS | DETECTION | ABSORPTION | DOPED MATERIALS | CONTROL
Journal Article
Review of Scientific Instruments, ISSN 0034-6748, 2014, Volume 85, Issue 4, pp. 043105 - 043105
In the present work, we applied an amplitude-spatial light modulator to shape the spectral amplitude of femtosecond pulses in a single step, without an... 
PHASE-CONTROL | INSTRUMENTS & INSTRUMENTATION | PHYSICS, APPLIED | ADAPTIVE OPTICS
Journal Article
Applied Optics, ISSN 1559-128X, 12/2016, Volume 55, Issue 34, pp. 9889 - 9894
To pump a solid-state femtosecond laser cavity, a beam from a CW laser is focused by a single lens into the laser crystal. To increase the output power of the... 
CAVITY DESIGN | TI-SAPPHIRE LASER | OPTICS | Usage | Titanium compounds | Optical properties | Gaussian processes | Femtosecond | Beams (radiation) | Pumps | Lasers | Crystals | Laser beams | Lenses | Astigmatism
Journal Article
Optics Express, ISSN 1094-4087, 06/2017, Volume 25, Issue 13, pp. 14473 - 14482
In this work we present an Autocorrelation z-scan technique to measure, simultaneously, the spatial and temporal distribution of femtosecond pulses near the... 
OPTICS | SPHERICAL-ABERRATION | ULTRASHORT LIGHT-PULSES | FIELD
Journal Article
Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X, 5/2017, Volume 10231, pp. 102311F - 102311F-9
The shape of a beam is important in any laser application and depending on the final implementation, there exists a preferred one which is defined by the... 
High Resolution CCD | Profiler | Focused Beam | Beam Profiler
Conference Proceeding
Applied Optics, ISSN 1559-128X, 02/2017, Volume 56, Issue 5, pp. 1417 - 1421
We present three methods for calculating the spatio-temporal electric field of ultra-short pulses near the focal point of an optical system. The first method... 
DISTORTION | ASTIGMATISM | FIELD CURVATURE | QUADRATURE | PRIMARY SPHERICAL-ABERRATION | OPTICS | TEMPORAL TRANSFORMATION | LENSES | FEMTOSECOND LASER-PULSES | PROPAGATION | COMA | Fourier transformations | Laser pulses, Ultrashort | Usage | Aberration | Research | Mirrors | Numerical aperture | Beams (radiation) | Focal plane | Algorithms | Mathematical analysis | Focusing | Electric fields | Pixels
Journal Article
American Journal of Physics, ISSN 0002-9505, 09/2014, Volume 83, Issue 2, pp. 143 - 149
In this work, we present an experimental method to characterize variable optical retarders, which can have linear or non-linear behavior of the retardance... 
PHASE UNWRAPPING ALGORITHM | VOLTAGE | ROBUST | PHYSICS, MULTIDISCIPLINARY | EDUCATION, SCIENTIFIC DISCIPLINES | Quantum optics | Optics | Matrices | Vector spaces | Research | Mathematical research | Matrix | Vector space | Navier Stokes equations | Physics
Journal Article
Applied Optics, ISSN 1559-128X, 03/2016, Volume 55, Issue 7, pp. 1613 - 1617
We describe the behavior of linearity in diffuse imaging by evaluating the differences between time-resolved images produced by photons arriving at the... 
SYSTEM | TEMPORAL EXTRAPOLATION | OPTICS | PERFORMANCE | BREAST | Monte Carlo method | Usage | Resolution (Optics) | Edge detection (Image processing) | Analysis | Computer simulation | Linearity | Imaging | Edge response functions | Photons | Diffusion | Spatial resolution | Bars
Journal Article
Journal of the Optical Society of America A: Optics and Image Science, and Vision, ISSN 1084-7529, 04/2014, Volume 31, Issue 4, pp. 696 - 703
We present a theoretical analysis of the field distribution in the focal plane of a dispersionless, high numerical aperture (NA) aplanatic lens for an... 
ELECTROMAGNETIC DIFFRACTION | IMAGE FIELD | OPTICAL SYSTEMS | OPTICS | SPECTROSCOPY | LASER
Journal Article
Proceedings of SPIE, ISSN 0277-786X, 09/2011, Volume 8011, Issue 1, pp. 80113J - 80113J-10
We analyze the Gaussian temporal envelope of pulses with an initial duration of 10fs and a carrier wavelength of 810nm along the optical axis of an achromatic... 
Ultrashort pulses | aberrations | focusing of ultrashort pulses | Envelopes | Numerical aperture | Wavelengths | Propagation | Integrals | Mathematical models | Electric fields | Quadratures
Conference Proceeding
Scientific Reports, ISSN 2045-2322, 12/2019, Volume 9, Issue 1, pp. 8954 - 14
Optical-coherence tomography (OCT) is a technique that employs light in order to measure the internal structure of semitransparent, e.g. biological, samples.... 
FREQUENCY CORRELATIONS | MULTIDISCIPLINARY SCIENCES | Tomography | Interference
Journal Article
Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X, 11/2013, Volume 8785, pp. 87855I - 87855I-8
We present results on time-resolved transillumination imaging by using the cumulant expansion solution to the transport equation for temporal extrapolation.... 
Tissue optics | Time-resolved imaging | Transillumination | Extrapolation | Liquids | Absorption | Wavelengths | Transport equations | Imaging | Edge response functions | Spatial resolution
Conference Proceeding
Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X, 11/2017, Volume 10590, pp. 105900F - 105900F-9
The spatial-temporal distribution of femtosecond pulses around the focal region of lenses has been extensively studied in recent years [1-6] due to the rapid... 
Ultrafast Optics | Mirrors | Aberrations | Pulse Shaping | Imaging systems
Conference Proceeding
Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X, 5/2017, Volume 10231, pp. 102311X - 102311X-6
In this work we present the design and manufacture of a compact Shack-Hartmann wavefront sensor using a Raspberry Pi and a microlens array. The main goal of... 
Shark-Hartmann | Raspberry Pi | Wavefront sensor
Conference Proceeding
Journal of Modern Optics, ISSN 0950-0340, 07/2013, Volume 60, Issue 13, pp. 1037 - 1044
We calculate the electric field of few-optical-cycle pulses at the focus of a perfectly conducting mirror by adding coherently the Airy diffraction patterns... 
ultrafast optics | attosecond optics | chirping | mirrors | femtosecond phenomena | OPTICS | Heart rate | Optics | Mirrors | Lasers | Electric fields | Focal plane | Chirp | Diffraction | Mathematical analysis | Spreading | Focusing | Spectra | Carrier frequencies
Journal Article
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