Related Experiment Video
Updated: Jul 30, 2025
12:14
The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
21.8K
Fully continuous spiral phase plate for ultraintense optical vortices
Optics Letters
|May 15, 2023
Summary
This study presents a fully continuous spiral phase plate (FC-SPP) for generating ultraintense Laguerre-Gaussian beams. The novel FC-SPP is fabricated using advanced techniques, demonstrating high-quality vortex beams for high-power laser applications.
Area of Science:
- Strong-field laser physics
- Optical vortex beam generation
- Phase plate technology
Background:
- Ultraintense optical vortices are crucial in strong-field laser physics.
- Their spiral phase and hollow intensity properties are of significant interest.
- Existing methods for generating these beams have limitations.
Purpose of the Study:
- To introduce a fully continuous spiral phase plate (FC-SPP).
- To enable the generation of ultraintense Laguerre-Gaussian beams.
- To develop an optimization method for fabricating high-performance FC-SPPs.
Main Methods:
- Developed an optimization design method using spatial filtering and chirp-z transform.
- Fabricated a large-aperture (200×200 mm²) FC-SPP on fused silica.
- Utilized magnetorheological finishing without mask techniques.
Main Results:
- Successfully generated ultraintense Laguerre-Gaussian beams using the FC-SPP.
- Achieved high-quality output vortex beams confirmed by vector diffraction calculations.
- Demonstrated the feasibility of the fabricated FC-SPP for high-intensity vortex production.
Conclusions:
- The developed FC-SPP is a high-quality optical element.
- This technology is suitable for high-power laser systems.
- The fabrication method ensures precise control over phase and intensity profiles.
Related Concept Videos
01:17Steady, Laminar Flow Between Parallel Plates
250
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
250
01:12Fluid Pressure over Curved Plate of Constant Width
1.6K
When a curved plate of constant width is submerged in a liquid, the pressure acting normal to the plate varies continuously both in magnitude and direction. Calculating the magnitude and location of the resultant force at a point is often challenging for such cases. One of the methods to determine the resultant force and its location involves separately calculating the horizontal and vertical components of the resultant force. This complex calculation can be simplified by representing the...
1.6K
01:23Steady, Laminar Flow in Circular Tubes
267
Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is...
267
01:02Fluid Pressure over Flat Plate of Variable Width
1.8K
When a flat plate is submerged in a fluid, the fluid exerts pressure on the plate. This pressure can lead to many different phenomena, including drag and buoyancy. To understand the behavior of the fluid over a flat plate of variable width, it is essential to analyze the distribution of the pressure exerted.
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
1.8K
01:05Fluid Pressure over Flat Plate of Constant Width
2.1K
When a body is submerged in water, it experiences fluid pressure acting normal on its surface and distributed over its area. For better design structures, it is crucial to determine the magnitude and location of the resultant force acting on the surface. In the case of a rectangular plate of constant width submerged in water, the pressure increases with depth, resulting in a linearly varying trapezoidal pressure distribution from the upper to the lower edge of the plate.
The resultant force...
The resultant force...
2.1K
01:26Phase Contrast and Differential Interference Contrast Microscopy
8.2K
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
8.2K