Results 31 to 40 of about 6,005 (217)

Materials processing with tightly focused femtosecond vortex laser beams

open access: yes, 2010
This letter is the first demonstration of material modification using tightly focused femtosecond laser vortex beams. Double-charge femtosecond vortices were synthesized with the polarization-singularity beam converter described in Ref [1] and then ...
Andrei V. Rode   +11 more
core   +2 more sources

All-laser-micromachining of ridge waveguides in LiNbO3 crystal for mid-infrared band applications

open access: yesScientific Reports, 2017
The femtosecond laser micromachining of transparent optical materials offers a powerful and feasible solution to fabricate versatile photonic components towards diverse applications.
Lingqi Li   +6 more
doaj   +1 more source

Compensation for time fluctuations of phase modulation in a liquid-crystal-on-silicon display by process synchronization in laser materials processing [PDF]

open access: yes, 2011
We demonstrate the adverse influence of temporal fluctuations of the phase modulation of a spatial light modulator (SLM) display device on nanosecond laser micromachining.
Beck, Rainer J   +3 more
core   +1 more source

Micromachining Transparent Materials by Femtosecond Laser.

open access: yesThe Review of Laser Engineering, 1999
We used 790-nm, 130-fs laser pulses for micromachining transparent materials including acrylic resin, quartz, diamond, and polyvinyl chloride. Using this technique, even 20 mm thick acrylic resin could bedrilled in 15 minutes, while a precise cut 20μm in width was produced in acrylic resin 0.5 mm thick.
Kazuya KUMAGAI   +2 more
openaire   +2 more sources

Taper Embedded Phase-Shifted Fiber Bragg Grating Fabricated by Femtosecond Laser Line-by-Line Inscription

open access: yesIEEE Photonics Journal, 2018
We demonstrate a phase-shifted fiber Bragg grating with a taper induced by femtosecond laser micromachining. In this configuration, a fiber taper fabricated by an arc discharge in a fiber splicer was sandwiched between two fiber Bragg grating sections ...
Feng Zhu   +9 more
doaj   +1 more source

Design and control of laser micromachining workstation [PDF]

open access: yes, 2012
The production process of miniature devices and microsystems requires the utilization of non-conventional micromachining techniques. In the past few decades laser micromachining has became micro-manufacturing technique of choice for many industrial and ...
Baran, Eray Abdurrahman   +6 more
core   +1 more source

Single femtosecond laser beam induced nanogratings in transparent media - Mechanisms and applications

open access: yesJournal of Materiomics, 2019
Single femtosecond laser beam induced nanograting structure in transparent media has attracted extensive attention in many fields of science and technology in the past decades.
Bo Zhang, Xiaofeng Liu, Jianrong Qiu
doaj   +1 more source

Monolithic optofluidic chips: from optical manipulation of single cells to quantum sensing of fluids [PDF]

open access: yes, 2014
This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the ...
4th Micro and Nano Flows Conference (MNF2014)   +1 more
core  

Fabrication of three-dimensional microdisk resonators in calcium fluoride by femtosecond laser micromachining

open access: yes, 2014
We report on fabrication of on-chip calcium fluoride (CaF2) microdisk resonators using water-assisted femtosecond laser micromachining. Focused ion beam (FIB) milling is used to create ultra-smooth sidewalls.
Cheng, Ya   +7 more
core   +1 more source

Smart Catheters for Diagnosis, Monitoring, and Therapy

open access: yesAdvanced Healthcare Materials, EarlyView.
This study presents a comprehensive review of smart catheters, an emerging class of medical devices that integrate embedded sensors, robotics, and communication systems, offering increased functionality and complexity to enable real‐time health monitoring, diagnostics, and treatment. Abstract This review explores smart catheters as an emerging class of
Azra Yaprak Tarman   +12 more
wiley   +1 more source

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