Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Atomic Nuclei: Larmor Precession Frequency01:11

Atomic Nuclei: Larmor Precession Frequency

3.8K
The earth's gravitational field produces a 'twisting force' perpendicular to the angular momentum of a spinning mass (such as a spinning top) that causes the mass to 'wobble' around the gravitational field axis in a phenomenon called precession. Similarly, the magnetic moment (μ) of a spinning nucleus precesses due to an external magnetic field directed along the z-axis. The precession of the magnetic moment vector about the magnetic field is called Larmor precession,...
3.8K
Inverse z-Transform by Partial Fraction Expansion01:20

Inverse z-Transform by Partial Fraction Expansion

794
The inverse z-transform is a crucial technique for converting a function from its z-domain representation back to the time domain. One effective method for finding the inverse z-transform is the Partial Fraction Method, which involves decomposing a function into simpler fractions with distinct coefficients. These fractions correspond to known z-transform pairs, facilitating the inverse transformation process.
To begin the process, the poles of the function are identified and the function is...
794
Linear Approximation in Time Domain01:21

Linear Approximation in Time Domain

426
Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
426
Rotation with Constant Angular Acceleration - II01:16

Rotation with Constant Angular Acceleration - II

7.9K
Kinematics is the description of motion. The kinematics of rotational motion discusses the relationships between rotation angle, angular velocity, angular acceleration, and time. One can describe many things with great precision using kinematics, but kinematics does not consider causes. For example, a large angular acceleration describes a very rapid change in angular velocity without any consideration of its cause. Thus, rotational kinematics does not represent the laws of nature.
The first...
7.9K
Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

454
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
454
Curvilinear Motion: Polar Coordinates01:27

Curvilinear Motion: Polar Coordinates

1.2K
In polar coordinates, the motion of a particle follows a curvilinear path. The radial coordinate symbolized as 'r,' extends outward from a fixed origin to the particle, while the angular coordinate, 'θ,' measured in radians, represents the counterclockwise angle between a fixed reference line and the radial line connecting the origin to the particle.
The particle's location is described using a unit vector along the radial direction. Deriving the particle's position...
1.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Author Correction: Improved RNA base editing with guide RNAs mimicking highly edited endogenous ADAR substrates.

Nature biotechnology·2026
Same author

Simultaneous demonstration of multiple optical tapped delay line functions on multiple data channels.

Optics letters·2026
Same author

Roadmap on singular optics and its applications.

Applied physics. B, Lasers and optics·2026
Same author

Accuracy of intraocular lens calculation formulas in aphakic eyes undergoing simultaneous silicone oil removal and intraocular lens implantation.

Acta ophthalmologica·2026
Same author

Advantages and Limitations of AlphaFold in Structural Biology: Insights from Recent Studies.

The protein journal·2025
Same author

Perspective on tailoring longitudinal structured beam and its applications.

Nanophotonics (Berlin, Germany)·2025
Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026
Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026
Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026
Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026
Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026
Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026
See all related articles

Related Experiment Video

Updated: Apr 15, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

22.7K

Phase correction for a distorted orbital angular momentum beam using a Zernike polynomials-based

Guodong Xie, Yongxiong Ren, Hao Huang

    Optics Letters
    |April 2, 2015
    PubMed
    Summary
    This summary is machine-generated.

    A new stochastic-parallel-gradient-descent algorithm (SPGD) corrects distorted orbital angular momentum (OAM) beams using Zernike polynomials. This method improves beam quality and reduces crosstalk for multiple OAM beams simultaneously.

    More Related Videos

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    10.5K
    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
    05:57

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

    Published on: April 1, 2020

    8.7K

    Related Experiment Videos

    Last Updated: Apr 15, 2026

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
    12:14

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

    Published on: August 12, 2013

    22.7K
    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    10.5K
    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
    05:57

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

    Published on: April 1, 2020

    8.7K

    Area of Science:

    • Optical physics
    • Beam propagation
    • Adaptive optics

    Background:

    • Orbital angular momentum (OAM) beams are susceptible to distortion from atmospheric turbulence.
    • Maintaining the quality and integrity of OAM beams is crucial for applications like free-space optical communication.

    Purpose of the Study:

    • To develop and experimentally validate a novel algorithm for correcting turbulence-induced distortions in OAM beams.
    • To investigate the potential for using a single derived phase correction pattern to simultaneously correct multiple OAM beams.

    Main Methods:

    • A stochastic-parallel-gradient-descent (SPGD) algorithm utilizing Zernike polynomials was employed to generate phase correction patterns.
    • The algorithm iteratively optimized correction patterns by monitoring the intensity profile of distorted OAM beams.
    • Phase correction patterns were derived from a single probe OAM beam and applied to multiple OAM beams experiencing identical turbulence.

    Main Results:

    • The proposed SPGD-based method successfully improved the quality of turbulence-distorted OAM beams.
    • Experimental results demonstrated that derived phase correction patterns could simultaneously correct multiple OAM beams.
    • Crosstalk among corrected OAM modes was significantly reduced by over 5 dB.

    Conclusions:

    • The SPGD algorithm offers an effective approach for real-time phase correction of distorted OAM beams.
    • This technique enables the simultaneous correction of multiple OAM beams, enhancing the robustness of OAM-based communication systems.
    • The reduction in crosstalk signifies improved mode purity and signal integrity.