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Updated: Jan 27, 2026

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

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Optical vortex shaping via a phase jump factor.

Haixiang Ma, Xinzhong Li, Hao Zhang

|March 16, 2019

Summary

This summary is machine-generated.

Researchers introduce a new type of optical vortex (OV), the remainder-phase optical vortex (ROV), by redefining topological charge (TC) using phase factors. This novel OV offers controllable orbital angular momentum (OAM) for advanced applications.

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Area of Science:

Optics and Photonics
Quantum Information Science

Background:

Topological charge (TC) is a fundamental parameter of optical vortices (OVs).
Existing methods for defining and manipulating TC can be complex.

Purpose of the Study:

To propose a novel framework for understanding and controlling optical vortex properties.
To introduce a new type of optical vortex with tunable characteristics.

Main Methods:

Unwrapped the integral definition of topological charge (TC).
Introduced two new factors: phase jump factor and phase gradient factor.
Investigated the properties of the novel remainder-phase optical vortex (ROV) by adjusting these factors.

Main Results:

The phase gradient factor dictates the total orbital angular momentum (OAM).
The phase jump factor controls the number of split unit vortices and reshapes OAM distribution.
Demonstrated a novel OV with controllable OAM distribution.

Conclusions:

The proposed phase factors provide a new way to define and control OV properties.
The remainder-phase optical vortex (ROV) offers enhanced control over OAM.
This work paves the way for new applications in particle manipulation, beam shaping, and micro-fabrication.