Related Experiment Video
Updated: Jan 30, 2026
12:14
The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
22.5K
Twisted Laguerre-Gaussian Schell-model beam and its orbital angular moment.
Optics Express
|January 18, 2019
Summary
We introduce a novel twisted Laguerre-Gaussian Schell-model (TLGSM) beam carrying both vortex and twist phases. Its propagation properties and orbital angular momentum (OAM) are significantly influenced by the phase handedness, enabling enhanced optical applications.
Area of Science:
- Optics and Photonics
- Quantum Optics
- Beam Propagation
Background:
- Partially coherent beams carry orbital angular momentum (OAM) via vortex or twist phases.
- Twist phase is exclusive to partially coherent light beams.
- Understanding beam evolution in optical systems is crucial for applications.
Purpose of the Study:
- Introduce a new partially coherent beam: the twisted Laguerre-Gaussian Schell-model (TLGSM) beam.
- Investigate the propagation dynamics of spectral density and spectral degree of coherence (SDOC) for TLGSM beams.
- Analyze the orbital angular momentum (OAM) characteristics of TLGSM beams in paraxial and anisotropic systems.
Main Methods:
- Theoretical analysis of a novel TLGSM beam.
- Simulation of beam propagation through paraxial ABCD optical systems.
- Derivation of analytical expressions for OAM contributions.
Main Results:
- TLGSM beams exhibit unique evolution properties influenced by vortex and twist phase handedness.
- Matching phase handedness suppresses side rings in SDOC and maintains a dark hollow profile.
- Opposite phase handedness leads to Gaussian beam profiles and enhanced SDOC side rings.
- Interrelated vortex and twist phase contributions significantly enhance OAM.
- OAM variation in anisotropic systems is detailed.
Conclusions:
- The handedness of vortex and twist phases in TLGSM beams critically controls their propagation characteristics.
- TLGSM beams offer enhanced OAM, beneficial for optical information transfer.
- These findings provide insights for advanced optical manipulation techniques.
Related Concept Videos
01:21Relation Between Moment of a Force and Angular Momentum
1.2K
In the realm of spinning tops, the application of force at a distance from the center produces torque, a pivotal factor that alters the angular momentum of the top, thereby inducing its rotation. The concept of moment, akin to linear force in rotation, quantifies how a force acting upon an object initiates rotational motion. Angular momentum serves as the rotational counterpart to linear momentum, representing an object's inherent tendency to persist in its rotational state.
The temporal...
The temporal...
1.2K
01:18Electron Orbital Model
72.1K
Orbitals are the areas outside of the atomic nucleus where electrons are most likely to reside. They are characterized by different energy levels, shapes, and three-dimensional orientations. The location of electrons is described most generally by a shell or principal energy level, then by a subshell within each shell, and finally, by individual orbitals found within the subshells.
The first shell is closest to the nucleus, and it has only one subshell with a single spherical orbital called the...
The first shell is closest to the nucleus, and it has only one subshell with a single spherical orbital called the...
72.1K
02:44Atomic Orbitals
43.9K
An atomic orbital represents the three-dimensional regions in an atom where an electron has the highest probability to reside. The radial distribution function indicates the total probability of finding an electron within the thin shell at a distance r from the nucleus. The atomic orbitals have distinct shapes which are determined by l, the angular momentum quantum number. The orbitals are often drawn with a boundary surface, enclosing densest regions of the cloud.
43.9K
01:30Gaussian Elimination: Problem Solving
190
Systems of linear equations in several variables are pivotal in modeling complex scenarios involving multiple unknowns and constraints. Such systems are widely used in various fields to represent relationships where several conditions must be simultaneously satisfied. Each variable in the system corresponds to an unknown quantity, while each equation imposes a linear constraint, leading to a structured approach for analyzing and solving real-world problems.A system of three equations with three...
190
03:51Molecular Orbital Theory II
27.3K
Molecular Orbital Energy Diagrams
27.3K
03:24Hybridization of Atomic Orbitals I
67.2K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
67.2K