Related Experiment Video
Updated: Dec 25, 2025
07:56
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
8.9K
Bessel-like beams with controllable rotating local linear polarization during propagation
Optics Letters
|April 3, 2020
Summary
Researchers created Bessel-like beams with controllable polarization rotation. This method allows for precise control over polarization evolution along the Poincaré sphere, achieving significantly faster rotation rates than previously reported.
Area of Science:
- Optics and Photonics
- Quantum Information Science
Background:
- Bessel beams exhibit unique propagation-invariant properties.
- Controlling polarization states of light is crucial for optical communication and sensing.
Purpose of the Study:
- To generate Bessel-like beams with controllable polarization rotation.
- To achieve polarization state evolution along the equator of the Poincaré sphere.
Main Methods:
- Utilizing an amplitude-phase joint modulation technique.
- Superposing two beams with controlled radial indices and intensity ratios.
Main Results:
- Demonstrated controllable rotation direction and rate of polarization.
- Achieved a rotation angle of ~800 degrees over 120 mm propagation.
- Obtained a rotation rate of ~6.7 deg/mm, approximately three times higher than prior studies.
Conclusions:
- The developed method offers precise control over polarization evolution in Bessel-like beams.
- This technique significantly enhances the rate of polarization rotation for advanced optical applications.
Related Concept Videos
01:01Group Polarization
38.3K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
38.3K
01:29Potential Due to a Polarized Object
675
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
675
01:30Propagation Speed of Electromagnetic Waves
4.5K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
4.5K