Dr. Dan Sporea Profile

Dr. Dan Sporea

Head Laser Measurements Lab at INFLPR

SPIE Involvement:

Author

Publications (43)

Proceedings Article | 28 August 2019 Paper

Response of long period gratings to gamma and neutron-gamma radiations

Flavio Esposito, Andrei Stăncălie, Daniel Neguţ, Agostino Iadicicco, Dan Sporea, Stefania Campopiano

Proceedings Volume 11199, 111990B (2019) https://doi.org/10.1117/12.2539791

KEYWORDS: Gamma radiation, Optical fibers, Manufacturing, Single mode fibers, Radiation effects, Refractive index

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Proceedings Article | 30 May 2016 Paper

Gamma radiation influence on silica optical fibers measured by optical backscatter reflectometry and Brillouin sensing technique

A. Wosniok, D. Sporea, D. Neguţ, K. Krebber

Proceedings Volume 9916, 99162J (2016) https://doi.org/10.1117/12.2236678

KEYWORDS: Signal attenuation, Glasses

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Proceedings Article | 30 May 2016 Paper

Long period gratings written in fluorine-doped fibers by electric arc discharge technique

Rajeev Ranjan, Flavio Esposito, Agostino Iadicicco, Andrei Stăncălie, Dan Sporea, Stefania Campopiano

Proceedings Volume 9916, 991622 (2016) https://doi.org/10.1117/12.2236841

KEYWORDS: Optical fibers, Signal attenuation, Fiber optics sensors, Refractive index, Temperature metrology, Environmental sensing, Sensors, Mechanical sensors, Cladding, Silica, Fabrication, Light wave propagation, Fluorine

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Proceedings Article | 30 May 2016 Paper

Perfluorinated polymer optical fiber for gamma radiation monitoring

P. Stajanca, L. Mihai, D. Sporea, D. Negut, K. Krebber

Proceedings Volume 9916, 99160H (2016) https://doi.org/10.1117/12.2235528

KEYWORDS: Polymer optical fibers, Gamma radiation, Fiber optics sensors, Radiation dosimetry, Signal attenuation, Visible radiation, Mechanical sensors, Environmental sensing, Sensors, Signal detection, Optical fibers, Glasses, Polymethylmethacrylate, Spectroscopy

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Proceedings Article | 12 May 2016 Paper

Experimental and theoretical investigation of the effect of laser parameters on laser ablation and laser-induced plasma formation

Andrei Stancalie, Savu-Sorin Ciobanu, Dan Sporea

Proceedings Volume 9899, 989933 (2016) https://doi.org/10.1117/12.2239186

KEYWORDS: Plasma, Pulsed laser operation, Laser induced breakdown spectroscopy, Laser ablation, Photonics, Spectroscopes, Copper, Atmospheric plasma, Gas lasers, Q switched lasers, Plasma generation, Ions, Absorption, Ionization

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Proceedings Article | 29 April 2016 Paper

Electron beam irradiation of materials and components to be used in mid-IR spectroscopy

Dan Sporea, Laura Mihai, Adelina Sporea, Gabriela Crăciun, Elena Mănăilă

Proceedings Volume 9899, 98990O (2016) https://doi.org/10.1117/12.2230234

KEYWORDS: Terahertz radiation, Mid-IR, Sensors, Windows, Electron beams, Radiation effects, Transmittance, Infrared detectors, Ionizing radiation, Indium arsenide, Dielectrics

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Proceedings Article | 29 April 2016 Paper

Optical and THz reflectance investigations of organic solar cells

Dan Sporea, Laura Mihai, Adelina Sporea, Yulia Galagan

Proceedings Volume 9898, 989814 (2016) https://doi.org/10.1117/12.2230693

KEYWORDS: Terahertz radiation, Solar cells, Reflectivity, Organic photovoltaics, Photovoltaics, Reflectance spectroscopy, Spectroscopy, Diffuse reflectance spectroscopy, Optics manufacturing, Electrodes, Spectroscopes, Silver

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Proceedings Article | 27 April 2016 Paper

Online monitoring of gamma irradiated perfluorinated polymer optical fiber

Dan Sporea, Laura Mihai, Daniel Neguţ, Pavol Stajanca, Katerina Krebber

Proceedings Volume 9886, 98861Q (2016) https://doi.org/10.1117/12.2230688

KEYWORDS: Polymer optical fibers, Gamma radiation, Absorption, Optical fibers, Spectroscopy, Ultraviolet radiation, Radiation dosimetry, Sensors, Signal detection, Signal attenuation, Temperature metrology, Radiation effects

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Proceedings Article | 27 April 2016 Paper

Long period grating response to gamma radiation

Dan Sporea, Andrei Stӑncalie, Daniel Neguţ, Sylvie Delepine-Lesoille, Laurent Lablonde

Proceedings Volume 9886, 98861P (2016) https://doi.org/10.1117/12.2230233

KEYWORDS: Sensors, Fiber Bragg gratings, Optical fibers, Gamma radiation, Radiation effects, Radiation dosimetry, Fiber characterization, Remote sensing, Signal attenuation, Physics, Single mode fibers

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Proceedings Article | 13 February 2016 Paper

Hollow-core waveguide for single-mode laser beam propagation in the spectral range of 3.7-7.3 μm

P. Patimisco, L. Mihai, M. Giglio, A. Sampaolo, P. Calabrese, J. Kriesel, D. Sporea, G. Scamarcio, F. Tittel, V. Spagnolo

Proceedings Volume 9755, 97552M (2016) https://doi.org/10.1117/12.2209533

KEYWORDS: Waveguides, Single mode fibers, Mid-IR, Imaging spectroscopy, Waveguide lasers, Laser beam propagation, Quantum cascade lasers, Fiber optics, Optical fibers, Infrared radiation, Wave propagation, Light wave propagation, Waveguide modes, Dielectrics

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Proceedings Article | 15 May 2014 Paper

Terbium-doped gadolinium oxysulfide (Gd2O2S:Tb) scintillation-based polymer optical fibre sensor for real time monitoring of radiation dose in oncology

E. Lewis, S. O'Keeffe, M. Grattan, A. Hounsell, D. McCarthy, P. Woulfe, J. Cronin, L. Mihai, D. Sporea, A. Santhanam, N. Agazaryan

Proceedings Volume 9141, 914113 (2014) https://doi.org/10.1117/12.2058572

KEYWORDS: Sensors, Optical fibers, Radiotherapy, Polymethylmethacrylate, Ionizing radiation, Gadolinium, Radiation oncology, X-rays, Oncology, Fiber optics sensors

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Proceedings Article | 26 October 2007 Paper

Comparative study of gamma-ray and neutron irradiated laser diodes

Dan Sporea, Adelina Sporea, I. Vata

Proceedings Volume 6796, 67962R (2007) https://doi.org/10.1117/12.778925

KEYWORDS: Semiconductor lasers, Gamma radiation, Photodiodes, External quantum efficiency, Resistance, Laser damage threshold, Temperature metrology, Diodes, Optical fibers, Chlorine

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Proceedings Article | 1 August 2007 Paper

Extracurricular photonics education in Romanian high schools

Dan Sporea, Adelina Sporea, Clementina Timus

Proceedings Volume 6785, 67851U (2007) https://doi.org/10.1117/12.756798

KEYWORDS: Photonics, Physics, Geometrical optics, Visualization, LabVIEW, Laser metrology, Education and training, Data acquisition, Computer programming, Chemistry

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Proceedings Article | 1 August 2007 Paper

Study of color centers in optical fibers to be used for ITER plasma diagnostics

Dan Sporea, Adelina Sporea, Simonpietro Agnello, Laura Nuccio

Proceedings Volume 6785, 67851T (2007) https://doi.org/10.1117/12.756745

KEYWORDS: Optical fibers, Signal attenuation, Gamma radiation, Ultraviolet radiation, UV optics, Visible radiation, Color centers, Plasma diagnostics, Beryllium, Hydrogen

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Proceedings Article | 3 June 2007 Open Access

International photonics training: a case study

Dan Sporea, Nicholas Massa, Judith Donnelly, Fenna Hanes

Proceedings Volume 9665, 96650O (2007) https://doi.org/10.1117/12.2207315

KEYWORDS: Photonics, Education and training, Physics, Professional development courses, Internet, Mathematics, Chemistry, Fiber optic communications, Biology, Sun

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Proceedings Article | 10 June 2006 Paper

Set-up for power calibration transfer at CO₂ laser wavelengths

D. Dumitras, D. Sporea, D. C. A. Dutu

Proceedings Volume 6344, 63442T (2006) https://doi.org/10.1117/12.694147

KEYWORDS: Carbon dioxide lasers, Calibration, Laser stabilization, Diffraction gratings, Feedback loops, Mirrors, Standards development, Laser resonators, Plasma, Laser metrology

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Proceedings Article | 24 October 2005 Open Access

Optics education in the frame of the Comenius "Hands-on Science" project

Manuel F. M. Costa, Dan Sporea, Clementina T.

Proceedings Volume 9664, 96642A (2005) https://doi.org/10.1117/12.2207792

KEYWORDS: Physics, Telescopes, Optics education, Diffusion, Spectroscopy, Optical sensors, Fiber optics, Photonics, Laser applications, Plasma physics

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Proceedings Article | 20 December 2004 Paper

Degradation of heterojunction laser diodes under electron beam irradiation

Dan Sporea, Constantin Oproiu, Radu Sporea

Proceedings Volume 5577, (2004) https://doi.org/10.1117/12.567245

KEYWORDS: Semiconductor lasers, Photodiodes, Electron beams, Sensors, Heterojunctions, Resistance, Temperature metrology, Laser damage threshold, Diodes, Laser optics

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Proceedings Article | 21 October 2004 Paper

Diode-laser-based therapy device

Mircea Udrea, Adriana Nica, Mariana Florian, Daniela Poenaru, Gabriela Udrea, Mihaela Lungeanu, Dan Sporea, Virgil Vasiliu, Roxana Vieru

Proceedings Volume 5581, (2004) https://doi.org/10.1117/12.583029

KEYWORDS: Laser beam diagnostics, Laser dentistry, Laser therapeutics, Semiconductor lasers, Infrared lasers, Laser development, Dentistry, Bone, Infrared radiation, Injuries

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Proceedings Article | 30 September 2003 Paper

Beam characterization of commercial red and infrared diode lasers

Dan Sporea, Mircea Udrea

Proceedings Volume 5227, (2003) https://doi.org/10.1117/12.519898

KEYWORDS: Semiconductor lasers, Infrared radiation, Infrared lasers, Beam analyzers, Surgery, Head, Optical spheres, Wavefront sensors, Optics manufacturing, Diodes

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Proceedings Article | 30 September 2003 Paper

Integrated software package for laser diodes characterization

Dan Sporea, Radu Sporea

Proceedings Volume 5227, (2003) https://doi.org/10.1117/12.520114

KEYWORDS: Semiconductor lasers, Photodiodes, Wavefront sensors, Power meters, Beam analyzers, Diodes, Data acquisition, Human-machine interfaces, Head, 3D image processing

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Proceedings Article | 30 September 2003 Paper

Heterojunction laser diodes subjected to ionizing radiation

Dan Sporea, Andrei Florean, Mihaela Gherendi

Proceedings Volume 5227, (2003) https://doi.org/10.1117/12.520113

KEYWORDS: Semiconductor lasers, Gamma radiation, Photodiodes, Resistance, Heterojunctions, Laser damage threshold, Diamond, Diodes, Ionizing radiation, Physics

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Proceedings Article | 9 August 2002 Paper

Evaluation of some low-power medical lasers

Dan Sporea, Andrei Florean

Proceedings Volume 4762, (2002) https://doi.org/10.1117/12.478663

KEYWORDS: Head, Laser dentistry, LASIK, Laser tissue interaction, Medical devices, Medical laser equipment, Laser therapeutics, Wound healing, Sensors, Lasers

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Proceedings Article | 29 June 2001 Paper

Heat transfer in IR optical components during CO2 laser irradiation

Mihai Oane, Dan Sporea

Proceedings Volume 4430, (2001) https://doi.org/10.1117/12.432824

KEYWORDS: Optical components, Carbon dioxide lasers, Absorption, Temperature metrology, Statistical analysis, Convection, Infrared radiation, Laser metrology, Diffusion, Plasma physics

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Proceedings Article | 29 June 2001 Paper

Laser beam characterization under PC control

Dan Sporea, Alexandru Ivan, Tiberiu Visan, Mihai Oane

Proceedings Volume 4430, (2001) https://doi.org/10.1117/12.432817

KEYWORDS: Beam analyzers, LabVIEW, Human-machine interfaces, Laser safety, Image filtering, 3D image processing, Helium neon lasers, 3D metrology, Laser beam characterization, Laser metrology

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Proceedings Article | 31 January 2001 Paper

Shaping the Romanian laser safety policy in the frame of European cooperation

Dan Sporea

Proceedings Volume 4156, (2001) https://doi.org/10.1117/12.413733

KEYWORDS: Laser safety, Standards development, Safety, Laser metrology, Legal, Laser applications, Medicine, Laser dentistry, Manufacturing, Calibration

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Proceedings Article | 28 June 2000 Paper

Beam power and mode structure studies on laser radiation used in LLLT

Mihail-Lucian Pascu, Ciprian Antipa, Dan Sporea, Tiberiu Visan, Alexandru Ivan, Angela Staicu

Proceedings Volume 4166, (2000) https://doi.org/10.1117/12.389462

KEYWORDS: Semiconductor lasers, Light emitting diodes, Laser therapeutics, Diodes, Continuous wave operation, Beam analyzers, 3D modeling, Laser energy, Optoelectronics, Collimation

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Proceedings Article | 23 February 2000 Paper

Characterization of coated optical components by laser calorimetry

Tiberiu Visan, Dan Sporea

Proceedings Volume 4068, (2000) https://doi.org/10.1117/12.378672

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Proceedings Article | 23 February 2000 Paper

LabVIEW remote control for a laser power/energy meter

Gabriel Ivan, Dan Sporea

Proceedings Volume 4068, (2000) https://doi.org/10.1117/12.378734

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Proceedings Article | 17 August 1999 Paper

Holographic interferometry in radiation dosimetry, microprocessor assisted

Silvia Nicolau, Dan Sporea, V. Niculescu

Proceedings Volume 3745, (1999) https://doi.org/10.1117/12.357803

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Proceedings Article | 25 February 1999 Paper

Computation algorithms for laser beam visualization

Dan Sporea, Gabriel Dumitru, Bogdan Prelipcean

Proceedings Volume 3736, (1999) https://doi.org/10.1117/12.340134

KEYWORDS: Algorithm development, Visualization, Semiconductor lasers, 3D displays, Cameras, Human-machine interfaces, Image processing, Beam analyzers, Nd:YAG lasers, Laser processing

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Proceedings Article | 19 August 1998 Paper

Some results concerning the performance of quarter-wave Fresnel Birhomb

Constantin Ghita, Lucsita Ghita, Mariuca Gartner, Gabriel Dumitru, Dan Sporea

Proceedings Volume 3573, (1998) https://doi.org/10.1117/12.320952

KEYWORDS: Wave plates, Glasses, Birefringence, Quartz, Fused quartz, Spectroscopic ellipsometry, Polarimetry, Raw materials, Tolerancing, Spectroscopes

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Proceedings Article | 2 July 1998 Paper

Performance of a pump system for diode-pumped lasers

Aurel Stratan, Constantin Fenic, Razvan Dabu, Nicolae Herisanu, C. Luculescu, Dan Sporea, Gabriel Dumitru, Gheorghe Iordache

Proceedings Volume 3405, (1998) https://doi.org/10.1117/12.312681

KEYWORDS: Nd:YAG lasers, Absorption, Laser systems engineering, Continuous wave operation, Diodes, Semiconductor lasers, Laser development, Beam splitters, Crystals, Beam analyzers

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Proceedings Article | 2 July 1998 Paper

Calibration procedures for a 10.6-um laser calorimeter

Michael Kennedy, Detlev Ristau, Gabriel Dumitru, Dan Sporea, Clementina Timus

Proceedings Volume 3405, (1998) https://doi.org/10.1117/12.312718

KEYWORDS: Calibration, Optical components, Standards development, Absorption, Optical calibration, Optical testing, Laser optics, Temperature metrology, Resistors, Calorimetry

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Proceedings Article | 2 July 1998 Paper

Beam optimization of a TEA-CO2 laser

Tobias Gross, Detlev Ristau, Gordon Wallas, Gabriel Dumitru, Dan Sporea, Clementina Timus

Proceedings Volume 3405, (1998) https://doi.org/10.1117/12.312754

KEYWORDS: Laser resonators, Pulsed laser operation, Standards development, Mirrors, Beam splitters, Optical components, Laser induced damage, Laser damage threshold, Laser energy, Gas lasers

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SPIE Journal Paper | 1 June 1996

Analytical and computational models for a laser radiation field scattered by rough surfaces

Dan Sporea, Gabriel Dumitru

OE, Vol. 35, Issue 06, (June 1996) https://doi.org/10.1117/12.10.1117/1.600731

KEYWORDS: Laser scattering, Scattering, Optical engineering, Surface finishing, Dielectrics, Superposition, Electromagnetic scattering, Calculus, Surface roughness, Electromagnetic radiation

SPIE Journal Paper | 1 May 1996

Checking-up of optical graduated rules by laser interferometry

Nicolae Miron, Dan Sporea

OE, Vol. 35, Issue 05, (May 1996) https://doi.org/10.1117/12.10.1117/1.600632

KEYWORDS: Laser optics, Microscopes, Data acquisition, Transducers, Human-machine interfaces, Laser interferometry, Photodetectors, Data processing, Interferometers, Optical benches

Proceedings Article | 26 September 1995 Paper

Theoretical model for the heat diffusion in an electrically calibrated laser power meter

Dan Sporea, Nicolae Miron, Gabriel Dumitru, Bogdan Timus

Proceedings Volume 2550, (1995) https://doi.org/10.1117/12.221418

KEYWORDS: Copper, Calibration, Sensors, Semiconducting wafers, Diffusion, Absorption, Temperature metrology, Infrared lasers, Bessel functions, Resistors

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Proceedings Article | 8 March 1995 Paper

Calculus of the corrections for the atmospheric parameters in laser interferometry

Nicolae Miron, Dan Sporea

Proceedings Volume 2461, (1995) https://doi.org/10.1117/12.203475

KEYWORDS: Temperature metrology, Humidity, Refractive index, Atmospheric corrections, Laser interferometry, Calculus, Helium neon lasers, Reflectors, Distance measurement, Transducers

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Proceedings Article | 8 March 1995 Paper

Microstrip gas chamber optoelectronic control device

Ivan Tsakov, Lyubomir Dimitrov, Vladimir Mitev, Dan Sporea

Proceedings Volume 2461, (1995) https://doi.org/10.1117/12.203573

KEYWORDS: Electrodes, Control systems, Optoelectronic devices, Sensors, Spatial resolution, Optoelectronics, Particles, CCD cameras, Image processing, Roads

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Proceedings Article | 30 November 1994 Paper

Fine mechanics products checking by laser interferometry

Nicolae Miron, Dan Sporea

Proceedings Volume 2342, (1994) https://doi.org/10.1117/12.195512

KEYWORDS: Transducers, Human-machine interfaces, Data processing, Spindles, Interferometers, Photodetectors, Microscopes, Data acquisition, Mechanics, Optical benches

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Proceedings Article | 5 August 1994 Paper

High-accuracy laser power measurement in IR and visible region

Nicolae Miron, Dan Sporea

Proceedings Volume 2321, (1994) https://doi.org/10.1117/12.182162

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Proceedings Article | 1 October 1991 Paper

Graduating rules checking up by laser interferometry

Nicolae Miron, Dan Sporea

Proceedings Volume 1500, (1991) https://doi.org/10.1117/12.46855

KEYWORDS: Interferometers, Human-machine interfaces, Microscopes, Transducers, Data processing, Phase conjugation, Humidity, Fabry–Perot interferometers, CRTs, Laser interferometry

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Showing 5 of 43 publications

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