Results 21 to 30 of about 1,418,339 (359)
Toward low-loss mid-infrared Ga2O3–BaO–GeO2 optical fibers
Scientific Reports, 2023 The development of efficient and compact photonic systems in support of mid-infrared integrated optics is currently facing several challenges. To date, most mid-infrared glass-based devices are employing fluoride or chalcogenide glasses (FCGs).
Théo Guérineau +12 more
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Comparison of differential gain in single quantum well and bulk double heterostructure lasers [PDF]
, 1991 The differential gain in single quantum well and bulk double heterostructure lasers is compared. In variance with previous predictions, no differential gain enhancement is found in single quantum well structure lasers at room temperature.
Chen, T. R., Yariv, A., Zhao, B.
core +1 more source
Scientific Reports, 2021 We report on a detailed study of an amplified spontaneous emission source operated in a pulsed regime with particular attention paid to the influence of high-intensity chaotic temporal events on the generation of nonlinear processes. To this aim, we have
Nicolas Valero +6 more
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Large optical cavity AlGaAs buried heterostructure window lasers [PDF]
, 1982 Large optical cavity buried heterostructure window lasers in which only the transparent AlGaAs waveguiding layers, and not the active layer, extend to the laser mirrors have been fabricated.
Blauvelt, H., Margalit, S., Yariv, A.
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Hydroxyapatite Thin Films of Marine Origin as Sustainable Candidates for Dental Implants
Pharmaceutics, 2023 Novel biomaterials with promising bone regeneration potential, derived from rich, renewable, and cheap sources, are reported. Thus, thin films were synthesized from marine-derived (i.e., from fish bones and seashells) hydroxyapatite (MdHA) by pulsed ...
Gabriela Dorcioman +11 more
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Narrow stripe AlGaAs lasers using double current confinement [PDF]
, 1982 Gain guided AlGaAs lasers in which the current is restricted to flow between two narrow stripes have been fabricated. The double current confinement configuration, which is fabricated by a selective meltback‐growth technique, enables the current ...
Blauvelt, H., Margalit, S., Yariv, A.
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Electrically pumped two-dimensional Bragg grating lasers [PDF]
, 2006 We demonstrate electrically pumped InGaAsP two-dimensional Bragg grating (2DBG) lasers with two line defects. The 2DBG structure uses a weak 2D index perturbation surface grating to control the optical modes in the plane of the wafer. Measurements of the
Choi, John M. +4 more
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Single-shot measurement of the photonic band structure in a fiber-based Floquet-Bloch lattice
Communications Physics, 2021 Floquet-Bloch lattices are systems that are relatively difficult to implement in solid-state physics. Here, using a photonic lattice as an alternative, the authors experimentally observe Floquet-Bloch bands using a single-shot method which allows them to
Corentin Lechevalier +5 more
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Nitrites Detection with Sensors Processed via Matrix-Assisted Pulsed Laser Evaporation
Nanomaterials, 2022 This work is focused on the application of a laser-based technique, i.e., matrix-assisted pulsed laser evaporation (MAPLE) for the development of electrochemical sensors aimed at the detection of nitrites in water.
Cristina Craciun +7 more
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Indian Journal of Ophthalmology, 2018 A 64-year-old male patient presented to the clinic with diminished vision in his right eye for the past 2 years. Examination revealed a best-corrected visual acuity (BCVA) of counting fingers at 1 m with a scarred choroidal neovascular membrane (CNVM) in the right eye while the left eye had a BCVA of 20/20 with a small peripapillary subretinal ...
Govindhari, Jay Chhablani
openaire +3 more sources