Results 21 to 30 of about 43,952 (314)
Laser mode complexity analysis in infrared waveguide free-electron lasers
Physical Review Accelerators and Beams, 2016 We analyze an optical phenomenon taking place in waveguide free-electron lasers, which disturbs, or forbids, operation in far infrared range. Waveguides in the optical cavity are used in far-infrared and THz ranges in order to avoid diffraction optical ...
Rui Prazeres
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Over 20-W Mid-Infrared Picosecond Optical Parametric Oscillator
IEEE Photonics Journal, 2015 We report on a high-average-power mid-infrared picosecond optical parametric oscillator (OPO) synchronously pumped by a Nd:YVO4 mode-locked laser. By use of the MgO-doped periodically poled LiNbO3 as the nonlinear crystal, up to 20.2-W picosecond laser ...
Zhipeng Qin +4 more
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THz QCL-Based Cryogen-Free Spectrometer for in Situ Trace Gas Sensing
Sensors, 2013 We report on a set of high-sensitivity terahertz spectroscopy experiments making use of QCLs to detect rotational molecular transitions in the far-infrared.
Paolo De Natale +5 more
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Yttrium oxide as a Q-switcher for the near-infrared erbium-doped fiber laser
Nanophotonics, 2020 Yttrium oxide (Y2O3) has been widely used in metal-reinforced composites, microelectronics, waveguide lasers, and high-temperature protective coatings because of its good physical and photoelectric properties.
Liu Mengli +6 more
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FAR INFRARED FREE ELECTRON LASER
Le Journal de Physique Colloques, 1983 Construction of an undulator magnet for the Bell Laboratories' far infrared free electron laser is underway. The undulator magnet has an optical bore 120mm in diameter and a helical magnetic field at the axis that is variable to 500 Gauss and has a pitch of 20 cm. extending to an overall length of 10 m.
Shaw, E., Emanuelson, R., Herbster, G.
openaire +2 more sources
Heavily Doped Zinc Oxide with Plasma Frequencies in the Telecommunication Wavelength Range
Advanced Photonics Research, 2023 Heavy and hyper doping of ZnO by a combination of gallium (Ga) ion implantation using a focused ion beam (FIB) system and post‐implantation laser annealing is demonstrated. Ion implantation allows for the incorporation of impurities with nearly arbitrary
Alexander Koch +12 more
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Mid-infrared all-fiber gain-switched pulsed laser at 3 μm
Opto-Electronic Advances, 2020 Mid-infrared (MIR) fiber pulsed lasers are of tremendous application interest in eye-safe LIDAR, spectroscopy, chemical detection and medicine. So far, these MIR lasers largely required bulk optical elements, complex free-space light alignment and large ...
Zhang Xiaojin +5 more
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Laser-based molecular delivery and its applications in plant science
Plant Methods, 2022 Lasers enable modification of living and non-living matter with submicron precision in a contact-free manner which has raised the interest of researchers for decades. Accordingly, laser technologies have drawn interest across disciplines.
Dag Heinemann +3 more
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Evidence for competition modes in a partially guided far-infrared free-electron laser
Physical Review Special Topics. Accelerators and Beams, 2014 The infrared free-electron laser (FEL) offers a large tunability since the FEL gain remains high throughout the infrared spectral range, and the reflectivity of metal mirrors remains also close to unity.
J.-M. Ortega +3 more
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Molecular Platform for Frequency Upconversion at the Single-Photon Level
Physical Review X, 2020 Direct detection of single photons at wavelengths beyond 2 μm under ambient conditions remains an outstanding technological challenge. One promising approach is frequency upconversion into the visible (VIS) or near-infrared (NIR) domain, where single ...
Philippe Roelli +3 more
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