Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Sleep Apnea

Sleep Apnea

Sleep apnea is a condition where breathing stops intermittently during sleep, often leading to significant health issues. Each episode can last from 10 to 20 seconds or more and is frequently accompanied by a brief arousal from sleep. This disturbance, largely unnoticed by the individual, can lead to severe daytime fatigue. Commonly, individuals seek help after being informed by their partners about loud snoring and noticeable breathing pauses during sleep.
The condition is more prevalent among...

Cardiopulmonary Resuscitation II: ACLS Airway Management

Cardiopulmonary Resuscitation II: ACLS Airway Management

Airway management is a key skill in emergency and critical care settings, as maintaining a clear airway is essential for adequate oxygenation and ventilation.Head Tilt-Chin Lift TechniqueThe head tilt-chin lift maneuver is an essential technique primarily used in patients without suspected cervical spine injuries. To perform this maneuver, one hand is placed on the patient’s forehead, and gentle pressure is applied backward to tilt the head. The fingertips of the other hand are positioned under...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Distinct vulnerable plaque phenotypes underlie perforator and hypoperfusion strokes: multimodal high resolution vessel wall imaging and optical coherence tomography study.

Journal of neurointerventional surgery·2026

Same author

Correlation-Driven Ultrafast Exciton Diffusion in Hubbard-Regime Moiré Superlattices.

Physical review letters·2026

Same author

Pavlov's experiment-inspired optical neural networks based on dual-color fluorescence switching effect.

National science review·2026

Same author

Isolinderalactone alleviates atherosclerosis by inhibiting NLRP3 inflammasome activation and inflammatory response in macrophages.

Atherosclerosis·2026

Same author

Coptis chinensis extracellular vesicles loaded with CA1-siRNA promote endothelial repair and stent restenosis therapy by regulating the PADI2 and NF-κB pathway.

Journal of nanobiotechnology·2026

Same author

Imaging multilevel exciton transport enabled by correlated electronic states.

Nature communications·2026

Search research articles

Related Experiment Video

Updated: Jun 8, 2026

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

Published on: August 1, 2017

Highly efficient solid-state vortex laser in a robust and simple configuration.

Wei Zhou, Yushuo Bao, Haowen Xu

|November 14, 2024

Summary

Researchers developed efficient, high-power vortex lasers using a Q-plate for controllable topological charge. This robust, compact system directly generates vortex beams in continuous-wave and pulsed modes for diverse applications.

More Related Videos

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

Related Experiment Videos

Last Updated: Jun 8, 2026

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

Published on: August 1, 2017

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

Area of Science:

Optics and Photonics
Laser Physics
Structured Light

Background:

Vortex beams, a form of structured light, have broad applications.
Developing high-performance vortex lasers with controllable properties is crucial.

Purpose of the Study:

To report a new class of highly efficient and high-power Nd:YAG vortex lasers.
To demonstrate direct generation of vortex beams with controllable topological charge.
To achieve both continuous-wave (CW) and pulsed operation regimes.

Main Methods:

Utilized a Q-plate within the laser resonator to control geometric phase for intracavity vortex mode generation.
Employed a Cr:YAG crystal as a saturable absorber for pulsed vortex laser generation.
Investigated vortex beam generation in both CW and pulsed operation.

Main Results:

Achieved a maximum CW output power of 4.11 W with 37.9% slope efficiency.
Generated vortex pulses with a shortest pulse width of 142.8 ns and maximum average power of 1.05 W.
Demonstrated that changing the Q-plate allows obtaining vortex modes with different topological charges without loss of efficiency.

Conclusions:

Successfully designed and built a robust, compact, and efficient vortex laser system.
The system allows on-demand generation of vortex beams with easily controllable topological charge.
The findings provide insights for designing high-power, efficient vortex lasers for specific applications.