Results 81 to 90 of about 2,664,944 (200)

Large mode area fibers with asymmetric bend compensation

Optics Express, 2011
Fibers with asymmetrical bend compensation offer to completely remove the tradeoff between mode area and single-modedness, with potentially huge impact on high-power amplification. These fibers would be difficult to fabricate, but are the only fundamental-mode strategy that can remove the bend-distortion limitations on mode-area scaling.
openaire   +2 more sources

Area spectra of the rotating BTZ black hole from quasinormal modes

, 2010
Following Bekenstein's suggestion that the horizon area of a black hole should be quantized, the discrete spectrum of the horizon area has been investigated in various ways.
Barvinsky A, Bekenstein J D, Das S, Gour G, Gour G, Kiselev V V, Kwon Y Nam S, Medved A J M, Motl L, Motl L, Natario J, Padmanabhan T Patel A, See, See, Setare M R, Setare M R, Soonkeon Nam, Vagenas E C, Wei S, Wei S Liu Y, Yongjoon Kwon   +20 more
core   +1 more source

Mode-adaptive control of a kilowatt-level large-mode-area fiber laser based on 5×1 photonic lantern

High Power Laser Science and Engineering
This study presents high-power mode-selective operation in a large-mode-area (LMA) fiber laser. A spatial mode-adaptive control system incorporating a 5×1 photonic lantern was employed to facilitate mode conversion between the LP01 and LP11 modes.
Wenguang Liu, Yanyang Hu, Hanwei Zhang, Lianchuang Ding, Pengfei Liu, Baozhu Yan, Jiangbin Zhang, Qiong Zhou, Zongfu Jiang   +8 more
doaj   +1 more source

Realization of an all-dielectric zero-index optical metamaterial

, 2013
Metamaterials offer unprecedented flexibility for manipulating the optical properties of matter, including the ability to access negative index, ultra-high index and chiral optical properties.
Anderson, Zachary, Briggs, Dayrl P., Kravchenko, Ivan I., Moitra, Parikshit, Valentine, Jason, Yang, Yuanmu   +5 more
core   +1 more source

Design of Mixed-mode Readout Electronics for Large-area SiPM Arrays

Yuanzineng kexue jishu
Accurate localization of radioactive material is essential for finding “orphan sources”, decontaminating and decommissioning nuclear facilities, and optimizing radiation protection.
HE Lei1, 2, ZHAO Xiuliang1, , HUANG Yuefeng2, HOU Huiliang2, 3, AN Kunhao2, 3
doaj   +1 more source

BFORE: The B-mode Foreground Experiment

, 2015
The B-mode Foreground Experiment (BFORE) is a proposed NASA balloon project designed to make optimal use of the sub-orbital platform by concentrating on three dust foreground bands (270, 350, and 600 GHz) that complement ground-based cosmic microwave ...
Ade, Peter, Boulanger, Francois, Bryan, Sean, de Bernardis, Francesco, Devlin, Mark, Dunkley, Joanna, Eales, Steve, Gomez, Haley, Groppi, Chris, Henderson, Shawn, Hillbrand, Seth, Hubmayr, Johannes, Mauskopf, Philip, McMahon, Jeff, Miville-Deschênes, Marc-Antoine, Niemack, Michael D., Novak, Giles, Pascale, Enzo, Pisano, Giampaolo, Scott, Douglas, Soler, Juan, Tucker, Carole   +21 more
core   +1 more source

Large on-chip Brillouin net amplification in silicon-based nano-photonics

AIP Advances, 2019
Recent developments in on-chip forward Brillouin scattering open up potential applications such as RF photonic signal processing, on-chip Brillouin amplification, and on-chip Brillouin lasers.
Hyeongpin Kim, Heedeuk Shin
doaj   +1 more source

An overview of solar flare results from COMPTEL [PDF]

, 1994
The COMPTEL experiment on the Compton Gamma Ray Observatory (CGRO) has been operating in orbit since April of 1991. During that time, COMPTEL has observed several large flares, the most notable of which were several X‐class flares which took place in ...
McConnell, Mark L
core   +1 more source

Characterization of a commercially available large area, high detection efficiency single-photon avalanche diode

, 2013
We characterize a new commercial, back-illuminated reach-through silicon single-photon avalanche photo diode (SPAD) SAP500 (Laser Components. Inc.), operated in Geiger-mode for purpose of photon counting.
Stipčević, Mario, Ursin, Rupert, Wang, Daqing   +2 more
core   +1 more source

Stress-Induced Polarization-Maintaining Large-Mode-Area Photonic Crystal Fibers With Deviation of the Single-Mode Transmission Band and Delocalization of Higher-Order Modes

IEEE Photonics Journal
The nonlinear effects and laser-induced optical and thermal damage in optical fibers, together with the limitations of beam quality and mode-field area, restrict the power scaling-up of single-mode output for developing high-power fiber lasers in the ...
Yuan Ma, Rui Wan, Huanhuan Yang, Yanfu Li, Chao Chen, Pengfei Wang   +5 more
doaj   +1 more source