scholarly journals Optical-trapping of particles in air using parabolic reflectors and a hollow laser beam

2019 ◽  
Vol 27 (23) ◽  
pp. 33061 ◽  
Author(s):  
Yong-Le Pan ◽  
Aimable Kalume ◽  
Isaac C. D. Lenton ◽  
Timo A. Nieminen ◽  
Alex B. Stilgoe ◽  
...  
Keyword(s):  
Laser Beam ◽  
Optical Trapping ◽  
Parabolic Reflectors ◽  
Hollow Laser Beam

Theory of atom guidance in a hollow laser beam: dressed-atom approach

2000 ◽  
Vol 17 (6) ◽  
pp. 1039 ◽  
Author(s):  
Xinye Xu ◽  
Yuzhu Wang ◽  
Wonho Jhe
Keyword(s):  
Laser Beam ◽  
Hollow Laser Beam

Generation of hollow laser beam with adjustable profile distribution by using tapered fiber

2021 ◽  
Vol 143 ◽  
pp. 107384
Author(s):  
Shuo Zhang ◽  
Yong Bi ◽  
Weinan Gao ◽  
EnLong Zhang ◽  
Xia Zhao ◽  
...  
Keyword(s):  
Laser Beam ◽  
Tapered Fiber ◽  
Profile Distribution ◽  
Hollow Laser Beam

Optical trapping near a colloidal cluster formed by a weakly focused laser beam

2008 ◽  
Vol 41 (10) ◽  
pp. 105107 ◽  
Author(s):  
S Ahlawat ◽  
R Dasgupta ◽  
P K Gupta
Keyword(s):  
Laser Beam ◽  
Optical Trapping

scholarly journals Micro-Dumbbells—A Versatile Tool for Optical Tweezers

2018 ◽  
Author(s):  
Weronika Lamperska ◽  
Sławomir Drobczyński ◽  
Michał Nawrot ◽  
Piotr Wasylczyk ◽  
Jan Masajada
Keyword(s):  
Laser Beam ◽  
Optical Tweezers ◽  
Optical Trapping ◽  
Viscosity Measurements ◽  
Two Photon ◽  
Vibration Detection ◽  
Holographic Optical Tweezers ◽  
Versatile Tool ◽  
Micro Tool

Manipulation of micro- and nano-sized objects with optical tweezers is a well established, albeit still evolving technique. While many objects can be trapped directly with focused laser beam(s), for some applications indirect manipulation with tweezers-operated tools is preferred. We introduce a simple, versatile micro-tool operated with holographic optical tweezers. The 40 µm long dumbbell-shaped tool, fabricated with two-photon laser 3D photolithography has two beads for efficient optical trapping and a probing spike on one end. We demonstrate fluids viscosity measurements and vibration detection as examples of possible applications.

scholarly journals Tailored Transverse Mode Vertical-Cavity Surface-Emitting Laser: Hollow Laser Beam Emission through Circle Aperture

2020 ◽  
Vol 12 (4) ◽  
pp. 1-6
Author(s):  
Yinli Zhou ◽  
Xing Zhang ◽  
Jianwei Zhang ◽  
Youwen Huang ◽  
Yugang Zeng ◽  
...  
Keyword(s):  
Laser Beam ◽  
Transverse Mode ◽  
Cavity Surface ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Hollow Laser Beam ◽  
Vertical Cavity

Process Parameters Control of Deposition of Hollow Cylindrical Part with Internal Wire Feeding through a Hollow Laser Beam

2013 ◽  
Vol 419 ◽  
pp. 305-309 ◽  
Author(s):  
Ming Jun Wu ◽  
Shi Hong Shi ◽  
Ge Yan Fu ◽  
Yu Liu
Keyword(s):  
Laser Beam ◽  
Process Parameters ◽  
Cylindrical Part ◽  
Uneven Surface ◽  
Real Time Control ◽  
Time Control ◽  
Optimization Of Process Parameters ◽  
Wire Feeding ◽  
Formed Part ◽  
Hollow Laser Beam

A new inside-laser coaxial wire feeding processing is adopted that can ensure a good axiality between wire and laser beam through transmitting wire along the centerline of the laser beam. Basing on the optimization of process parameters and single beads cladding experiments, the causes of the uneven surface of the formed part is analyzed. By putting forward a method of the real-time control of the defocusing amount and the laser power, a fine multi-layer hollow rotary part is formed. The formed part has no subsidence damage and crack on the whole cladding layer. The size of the error is small and the hardness of the laser cladding is uniformly distributed.

Guiding cold atoms in a hollow laser beam

1999 ◽  
Vol 60 (6) ◽  
pp. 4796-4804 ◽  
Author(s):  
Xinye Xu ◽  
V. G. Minogin ◽  
Kwanil Lee ◽  
Yuzhu Wang ◽  
Wonho Jhe
Keyword(s):  
Laser Beam ◽  
Cold Atoms ◽  
Hollow Laser Beam
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