Results 31 to 40 of about 322,270 (296)

Microresonators for organic semiconductor and fluidic lasers [PDF]

open access: yes, 2007
This thesis describes a number of studies of microstructured optical resonators, designed with the aim of enhancing the performance of organic semiconductor lasers and exploring potential applications. The methodology involves the micro-engineering of
Vasdekis, Andreas E.
core   +2 more sources

Facile Fabrication of Hybrid Carbon Nanotube Sensors by Laser Direct Transfer

open access: yesNanomaterials, 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
doaj   +1 more source

Discrete mode lasers for applications in access networks [PDF]

open access: yes, 2007
Fast development of the modern telecommunication networks such as fiber-to-the-home or radio-over-fiber systems require an inexpensive yet reliable optical transmitter for electro-optic conversion.
Kelly, Brian   +13 more
core   +2 more sources

Hybrid Nanostructures Obtained by Transport and Condensation of Tungsten Oxide Vapours onto CNW Templates

open access: yesNanomaterials, 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
doaj   +1 more source

Twisted Hi-Bi fiber DFB lasers with controllable output polarization [PDF]

open access: yes, 2012
We demonstrate that single polarization, hi-bi fiber DFB lasers are in general characterized by elliptical state of polarization, due to the in-built fiber birefringence axis rotation.
Wilmshurst, R.   +2 more
core   +2 more sources

Probing the dispersive properties of optical fibers with an array of femtosecond-written fiber Bragg gratings

open access: yesScientific 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
doaj   +1 more source

Formation of Ordered Ionic Salt Agglomerates Through Evaporative Crystallization in Hanging Drop Systems

open access: yesApplied Sciences
This study introduces novel experimental systems that facilitate the nucleation, growth, aggregation, and agglomeration of ionic salt solutions, leading to structurally and functionally distinctive crystal formations.
Ion Sandu   +7 more
doaj   +1 more source

Analysis of Carbon Contents and Heavy Metals in Coal Samples Using Calibration-free LIBS Technique

open access: yesJournal 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
doaj   +1 more source

Ultrafast Fiber Laser Emitting at 2.8 µm Based on a SESAM and a Broadband FBG

open access: yesPhotonics, 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
doaj   +1 more source

Integration of Dye Lasers and Microfluidics for Biochemical Analysis [PDF]

open access: yes, 2009
This dissertation describes the study of two important aspects of integration in microfluidics: optics and biochemistry. In optics integration, two types of miniaturized dye lasers, namely the solid-state polymer dye lasers and optofluidic dye lasers ...
Chen, Yan
core   +1 more source

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