Results 31 to 40 of about 7,252,201 (202)

35 Core Polarization-Maintaining Multi-core Fiber for High Power Operation [PDF]

open access: yesEPJ Web of Conferences
This work presents a novel rod-type 35 core multi-core fiber design that is capable of overcoming the inherent lack of polarization maintenance in such structures. A polarization extinction ratio of 10.5dB is achieved.
Khalil Yahia   +8 more
doaj   +1 more source

500-W Average Power, 100-mJ level Pulse Energy by Q-switched 7x7 Multicore Fiber Lasers [PDF]

open access: yesEPJ Web of Conferences
This work focuses on achieving high peak and average power through incoherent beam combination of Q-switched 49-core fiber laser. Results show 1.5-MW peak power, and 502-W average power between 1-10 kHz.
Bahri Mehran   +8 more
doaj   +1 more source

Effects of Laser Plasma Formation on Quasi-Phase Matching of High-Order Harmonics from Nanoparticles and Atoms

open access: yesNanomaterials, 2019
The application of nanoparticles (NPs) and quasi-phase matching (QPM) each play an important role in the enhancement of high-order harmonics (HHG) of ultrashort laser pulses.
Rashid A. Ganeev   +3 more
doaj   +1 more source

From 3D to 2D and back again

open access: yesNanophotonics, 2023
The prospect of massive parallelism of optics enabling fast and low energy cost operations is attracting interest for novel photonic circuits where 3-dimensional (3D) implementations have a high potential for scalability.
Dinc Niyazi Ulas   +6 more
doaj   +1 more source

The Boston University Photonics Center annual report 2014-2015 [PDF]

open access: yes, 2015
This repository item contains an annual report that summarizes activities of the Boston University Photonics Center in the 2014-2015 academic year. The report provides quantitative and descriptive information regarding photonics programs in education ...
The Boston University Photonics Center
core   +1 more source

Solderjet bumping packaging technique optimization for the miniaturization of laser devices

open access: yesJournal of the European Optical Society-Rapid Publications, 2017
Background Low-stress soldering techniques can guarantee a minimized input of thermal energy allowing for the design and later assembly of more robust and miniaturized optical devices.
P. Ribes-Pleguezuelo   +6 more
doaj   +1 more source

Phase-shift mask fabrication at micrometric scale by ion-exchange in glass for astronomical wavefront sensors [PDF]

open access: yesEPJ Web of Conferences, 2020
Photolithography combined with ion-exchange in glass is a well-known technology that can be applied to develop many different optical devices. In this work, we present the complete procedure to generate small circular phase-shift masks with diameters of ...
Prieto-Blanco Xesús   +5 more
doaj   +1 more source

The Boston University Photonics Center annual report 2016-2017 [PDF]

open access: yes, 2017
This repository item contains an annual report that summarizes activities of the Boston University Photonics Center in the 2016-2017 academic year. The report provides quantitative and descriptive information regarding photonics programs in education ...
The Boston University Photonics Center
core  

Angularly selective thermal emitters for deep subfreezing daytime radiative cooling

open access: yesNanophotonics, 2022
We theoretically analyze the impact of angular selectivity on the radiative cooling performance of thermal emitters. We investigate the effect of spectral selectivity, environmental conditions, and parasitic heating on the minimum possible equilibrium ...
Chamoli Sandeep Kumar   +3 more
doaj   +1 more source

Applied of Integrated Optical Biosensor based on Combination of Photonic Crystal Micro-Cavity and Ring Resonator [PDF]

open access: yesThe Transactions of The Korean Institute of Electrical Engineers, 2011
We propose a novel ring structure based on the stadium-shaped ring resonator (SSRR) with dual photonic crystal microcavity (DPCM) for biosensor and analyzed the sensing characteristics. The Q-factor of the photonic crystal microcavity (PCM) can be significantly enhanced when the PCM or DPCM has the same resonance condition as the SSRR.
Hong-Seung Kim   +4 more
openaire   +1 more source

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