Results 21 to 30 of about 21,665 (206)
Long-time optical transmittance measurements of silica nanofibers [PDF]
EPJ Web of Conferences, 2020 We perform long-time measurements of the optical silica transmittance during several months in different environments and with different nanofiber lengths.
Bouhadida Maha, Lebrun Sylvie
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Journal of the European Optical Society-Rapid Publications, 2023 Line-field Confocal Optical Coherence Tomography (LC-OCT) is an imaging modality based on a combination of time-domain optical coherence tomography and reflectance confocal microscopy.
Waszczuk Léna +3 more
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Light Extraction and Brightness Enhancement of Luminescent Rectangular Slabs
Advanced Photonics Research, 2022 The extraction efficiency and the brightness are critical parameters to increase the performance of luminescent rectangular slabs such as scintillators, luminescent concentrators, or diamonds with NV centers.
Pierre Pichon +6 more
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Radiative heat exchange driven by acoustic modes between two solids at the atomic scale [PDF]
EPJ Web of Conferences, 2023 In the near field (for separation distances smaller than the thermal wavelength, of the order of some microns at ambient temperature), the radiative heat flow between two solids at different temperatures can exceed the blackbody limit by several orders ...
Gómez Viloria Mauricio +4 more
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Power scaling of LED-pumped alexandrite: The road to high gain multipass amplifiers [PDF]
EPJ Web of ConferencesOur experiment demonstrates that LED-pumping through luminescent concentrator enables sufficient pump power for viable alexandrite amplifier gain. In 10 passes we obtain a gain of 19 with 10 W output power, for 50 µs pulses at 20 Hz and 760 nm.
Thellier Elio +6 more
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Electrical generation of visible surface plasmon polaritons by a nanopillars antenna array
APL Photonics, 2021 Electrical excitation of surface plasmon polaritons by inelastic tunneling electrons has been put forward as a potential nanosource that can be used in a variety of on-chip optoelectronic applications.
Cheng Zhang +4 more
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Gas-pressure tuning of wavelength of photon pair emitted by Four-Wave-Mixing in Nanofibers [PDF]
EPJ Web of Conferences, 2022 We present experimental results demonstrating the possibility to tune the wavelength of the photon pair emitted through four wave mixing in a nanofiber, using the pressure of a gas surrounding the nanofiber. Using Argon, a shift of idler wavelength of -1.
Bonifacio Agathe +5 more
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Study of self-heated tapered silica microfibers by laser in air [PDF]
EPJ Web of ConferencesWe present measurements of the temperature of optical microfibers self-heated by a cw laser emitting at 1.48 μm. The experimental method we have implemented is simple and enables to perform for the first time to our knowledge spatially distributed ...
Liss Ludivine +10 more
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New Materials for Short-Pulse Amplifiers
IEEE Photonics Journal, 2011 Laser amplifiers seek high power, efficiency, and short pulse durations. Research laboratories in this field have focused their investigations toward new laser materials that can be efficiently diode pumped, sustain high-power pumping, and have broad ...
Frédéric Druon +2 more
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Journal of the European Optical Society-Rapid Publications, 2023 Mechanical forces play an important role in the behaviour of cells, from differentiation to migration and the development of diseases. Optical tweezers provide a quantitative tool to study these forces and must be combined with other tools, such as phase
Gillant Flavie +5 more
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