Results 111 to 120 of about 48,353 (296)

Atoms in hollow-core fibers: a QED approach

New Journal of Physics
Abstract We outline mechanical effects of light–matter interaction inside hollow-core optical fibers. Starting with quantized electromagnetic radiation, we demonstrate how dispersion, mode functions and losses define an open quantum system and how subsequent Langevin equations can be used to predict spatially-dependent vacuum forces ...
Thomas W Clark, Luca Vincetti, Peter Domokos   +2 more
openaire   +2 more sources

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Mid-infrared transmission properties of step index and large mode area ZnSe microstructured optical fibers [PDF]

, 2012
ZnSe microstructured fibers have been designed and fabricated using silica capillaries and an air-silica photonic band-gap optical fiber as high-pressure microfluidic templates for semiconductor growth via chemical fluid deposition.
Peacock, A.C., J. V. Badding, Sazio, P.J.A., P. J. A. Sazio, N. Healy, He, R., Petrovich, M.N., Sparks, J.R., Rongrui He, M. N. Petrovich, A. C. Peacock, J. R. Sparks, Healy, N., Badding, J.V.   +13 more
core   +1 more source

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source

Erbium:ytterbium co-doped large-core fiber laser with 297W continuous-wave output power

, 2007
We have demonstrated a high-power and high-efficiency erbium:ytterbium (Er:Yb) co-doped fiber laser that produces 297 W of continuous-wave output at 1567 nm.
Nilsson, J., Jayanta K. Sahu, Mike Lovelady, Piper, A., Johan Nilsson, David N. Payne, Yoo, S., R. Horley, Andy Piper, Payne, D.N., Lovelady, M., Christophe A. Codemard, Jeong, Y., Hickey, L.M.B., Andrew Harker, Yoonchan Jeong, Louise Hickey, Turner, P.W., Horley, R., P. W. Turner, Codemard, Christophe, Harker, A.T., Sahu, J.K., Seongwoo Yoo   +23 more
core   +1 more source

3D‐Printing Aided Rapid Prototyping of Pretensioned Tensegrity Structures for Robotic Applications

Advanced Robotics Research, EarlyView.
Printing, injection molding, and assembly (PMA) is a method for rapid prototyping mesoscale, topologically complex, and tensioned tensegrity structures. In combination with PMA method, two mold design strategies: modular mold and compact channel layout, enable efficiency and scalability for tensegrity fabrication.
Yi Sun, Jan Petrš, Omar Aloui, Dario Floreano   +3 more
wiley   +1 more source

Depressed clad hollow optical fiber with fundamental LP01 mode cut-off

, 2006
We propose a depressed clad hollow optical fiber with fundamental (LP01) mode cut-off suitable for high power short-wavelength, especially three-level, fiber laser operation by introducing highly wavelength dependent losses at longer wavelengths. The cut-
Codemard, C., Nilsson, J., Y. Jeong, Dupriez, P., Soh, D.B.S., Sahu, J., D.B.S. Soh, C. Codemard, Yoo, S., J. Kim, S. Yoo, Jeong, Y., Kim, J., J. Nilsson, J. K. Sahu, P. Dupriez   +15 more
core   +1 more source

Hollow-core fiber loading of nanoparticles into ultra-high vacuum

, 2023
Many experiments in the field of optical levitation with nanoparticles today are limited by the available technologies for particle loading. Here we introduce a new particle loading method that solves the main challenges, namely deterministic positioning
Mario Ciampini (17467614), Jakob Rieser (14414046), Markus Aspelmeyer (5949353), Yaakov Y. Fein (17467611), Paul Juschitz (17467608), Nikolai Kiesel (14391192), Stefan Lindner (5317274)   +6 more
core   +1 more source

Anti-resonant hexagram hollow core fibers

Optics Express, 2015
Various simple anti-resonant, single cladding layer, hollow core fiber structures are examined. We show that the spacing between core and jacket glass and the shape of the support struts can be used to optimize confinement loss. We demonstrate the detrimental effect on confinement loss of thick nodes at the strut intersections and present a fabricated ...
Hayes, John R., Poletti, Francesco, Abokhamis Mousavi, S.M., Wheeler, Natalie V., Baddela, Naveen K., Richardson, David J.   +5 more
openaire   +3 more sources

Bioinspired Soft‐Skeleton Robotics With Cooperative Shape Transformation and Stiffness Adaptation

Advanced Robotics Research, EarlyView.
A bioinspired soft‐skeleton robot that integrates variable‐stiffness chain skeletons into a soft textile skin is developed. The chain skeletons are highly flexible initially but can stiffen upon pneumatic actuation, enabling large deformation and enhanced load‐bearing capacity.
Mengyuan Niu, Xiaorui Hu, Chenmin Yuan, Haoyun Li, Xuzhong Su, Fengxin Sun   +5 more
wiley   +1 more source