光学流形成光学龙卷风的形状
Optics express
|September 15, 2023
概括
用光学带播种加速的环-Airy光束,产生龙卷风波. 这些波的特点是螺旋状的叶片和旋,加速,状的轨迹,揭示了旋-龙卷风的连接.
科学领域:
- 非线性光学和光束传播.
- 波物理学和复杂的束力学.
背景情况:
- 加速光束,就像环-艾瑞光束一样,表现出独特的传播动态.
- 光学是光场中的基本结构,携带轨道角动量.
研究的目的:
- 为了研究带有光学的加速环-艾瑞光束的转换.
- 描述由此产生的复杂光结构及其传播动态.
主要方法:
- 光传播的数值模拟.
- 对光束强度配置和轨迹的分析.
主要成果:
- 使用光学的播种将环-艾里射线转化为龙卷风波 (ToW).
- 龙卷风波表现出螺旋式的高强度叶片和交织在一起的,状的旋轨迹.
- 传播动力学受到种子的数量,位置和拓电荷的影响.
结论:
- 建立了光学和龙卷风波形成之间的直接联系.
- 展示了复杂的光结构的受控生成,具有可调节的动态.
相关概念视频
01:27Toroids
3.0K
A toroid is a closely wound donut-shaped coil constructed using a single conducting wire. In general, it is assumed that a toriod consists of multiple circular loops perpendicular to its axis.
When connected to a supply, the magnetic field generated in the toroid has field lines circular and concentric to its axis. Conventionally, the direction of this magnetic field is expressed using the right-hand rule. If the fingers of the right hand curl in the current direction, the thumb...
When connected to a supply, the magnetic field generated in the toroid has field lines circular and concentric to its axis. Conventionally, the direction of this magnetic field is expressed using the right-hand rule. If the fingers of the right hand curl in the current direction, the thumb...
3.0K
01:28Irrotational Flow
484
Irrotational flow is characterized by fluid motion where particles do not rotate around their axes, resulting in zero vorticity. For a flow to be irrotational, the curl of the velocity field must be zero. This imposes specific conditions on velocity gradients. For instance, to maintain zero rotation about the z-axis, the gradient condition:
484
01:24Turbulent Flow
214
Turbulent flow is characterized by unpredictable fluctuations in velocity and pressure, which result in a chaotic fluid movement distinct from the orderly patterns of laminar flow. While laminar flow is governed by smooth, parallel layers with minimal mixing, turbulent flow exhibits highly irregular, three-dimensional patterns. This behavior arises due to instabilities in the fluid's velocity profile, and amplifies as the flow velocity increases. Minor disturbances, known as turbulent...
214
02:12The Wave Nature of Light
49.3K
The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
49.3K
01:05Doppler Effect - II
3.4K
The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
3.4K
01:16Focusing of Light in the Eye
2.9K
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
2.9K