Results 31 to 40 of about 1,473,983 (338)
Facile Fabrication of Hybrid Carbon Nanotube Sensors by Laser Direct Transfer
Nanomaterials, 2021 Ammonia is one of the most frequently produced chemicals in the world, and thus, reliable measurements of different NH3 concentrations are critical for a variety of industries, among which are the agricultural and healthcare sectors.
Anca F. Bonciu +4 more
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Very low threshold InGaAsP mesa laser [PDF]
, 1983 Very low threshold currents InGaAsP/InP terrace mesa (T-ME) lasers with an unpassivated surface have been fabricated on semi-insulating (SI) InP substrates. Fabrication of the lasers involves a single-step liquid phase epitaxial (LPE) growth and a simple
Chen, T. R. +6 more
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Analysis of Carbon Contents and Heavy Metals in Coal Samples Using Calibration-free LIBS Technique
Journal of Spectroscopy, 2022 We report a compositional analysis of four coal samples collected from different mines in Pakistan and one Chinese brand. The coal samples were pelletized in the form of a disc and irradiated with a focused laser beam of fundamental (1064 nm) and second (
Muhammad Aamir Israr +3 more
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Nanomaterials, 2021 We present hybrid nanomaterial architectures, consisting of carbon nanowalls (CNW) templates decorated with tungsten oxide nanoparticles, synthesized using a mechanism based on tungsten oxide sublimation, vapor transport, followed by vapor condensation ...
Lavinia Gabriela Carpen +6 more
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Scientific Reports, 2022 We propose an efficient method to determine the effective refractive index of step-index optical fibers from the visible to the mid-IR and thus allowing to infer their dispersive properties over a broad spectral range.
Tommy Boilard +2 more
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Ultrafast Fiber Laser Emitting at 2.8 µm Based on a SESAM and a Broadband FBG
Photonics, 2023 Ultrafast mid-infrared fiber lasers have been intensely studied in the last decade for the generation of high harmonics, molecular spectroscopy, material processing and remote sensing.
Pascal Paradis +4 more
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Photonic crystal laser sources for chemical detection [PDF]
, 2003 We have realized photonic crystal lasers that permit the introduction of analyte within the peak of the optical field of the lasing mode. We have explored the design compromises for developing such sensitive low-threshold spectroscopy sources, and ...
Lončar, Marko +2 more
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Multi-stabilities and symmetry-broken one-colour and two-colour states in closely coupled single-mode lasers [PDF]
, 2014 We theoretically investigate the dynamics of two mutually coupled identical single-mode semi-conductor lasers. For small separation and large coupling between the lasers, symmetry-broken one-colour states are shown to be stable.
Amann, Andreas +2 more
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Seminars in Plastic Surgery, 2007 In a society desiring images of beauty and youthfulness, the world of cutaneous surgery offers the gifts of facial rejuvenation for those determined to combat the signs of aging. With the development of novel laser and plasma technology, pigmentary changes, scarring, and wrinkles can be conquered providing smoother, healthier, younger-looking skin ...
Joseph P, Janik +3 more
openaire +2 more sources
A theory of longitudinal modes in semiconductor lasers [PDF]
, 1982 A theory of longitudinal mode lasing spectrum of semiconductor lasers is developed which takes into account the nonuniform carrier and photon distributions and local gain spectrum shifts inside lasers with low end mirror reflectivities.
Lau, Kam Y., Yariv, Amnon
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