Related Experiment Video
Updated: Jun 22, 2026
12:14
The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Summary
Bessel beams, important for applications like atom manipulation, can be generated from simple, incoherent light sources. Light coherence properties are key to forming these propagation-invariant optical fields.
Area of Science:
- Optics and Photonics
- Quantum Optics
Background:
- Propagation-invariant light fields, such as Bessel beams, are crucial for applications including atom micromanipulation, laser-produced plasmas, and optical angular momentum studies.
- Understanding the formation of these beams is essential for advancing optical technologies.
Purpose of the Study:
- To explore the role of light coherence properties in the formation of Bessel beams.
- To demonstrate the generation of Bessel beams from temporally incoherent broadband light sources.
- To investigate the influence of spectral bandwidth on Bessel beam characteristics.
Main Methods:
- Modeling optical fields as a superposition of conical waves.
- Utilizing temporally incoherent broadband light sources, including a halogen bulb.
- Employing a supercontinuum source to analyze the effect of bandwidth.
Main Results:
- Bessel beams can be successfully created from temporally incoherent broadband sources.
- The coherence properties of light significantly influence the formation of Bessel beams.
- The behavior of Bessel beams is dependent on the bandwidth of the incident light field.
Conclusions:
- Coherence is a critical factor in generating Bessel beams from incoherent light.
- Bessel beams offer a versatile tool for various scientific and technological applications.
- Further research into bandwidth effects can optimize Bessel beam generation and control.
Related Concept Videos
01:07Propagation of Waves
When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
01:30Propagation Speed of Electromagnetic Waves
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
02:12The Wave Nature of Light
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.
02:18Interference and Diffraction
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
01:07Reflection of Waves
When a wave travels from one medium to another, it gets reflected at the boundary of the second medium. A common example of this is when a person yells at a distance from a cliff and hears the echo of their voice. The sound waves (longitudinal waves) traveling in the air are reflected from the bounding cliff. Similarly, flipping one end of a string whose other end is tied to a wall causes a pulse (transverse wave) to travel through the string, which gets reflected upon reaching the wall. In...
01:30Plane Electromagnetic Waves I
The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed to be a...
The EM field is assumed to be a...