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Updated: Apr 20, 2026

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
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Improved nonparaxial accelerating beams due to additional off-axis spiral phases
Summary
Researchers explored two-dimensional accelerating beams. Imposing spiral phases improved the beam
Area of Science:
- Optical physics
- Beam propagation dynamics
Background:
- Accelerating beams maintain their shape during propagation.
- Off-axis spiral phase imposes additional acceleration perpendicular to the propagation path.
Purpose of the Study:
- Investigate the behavior of two-dimensional accelerating beams.
- Analyze the impact of dual off-axis spiral phases on beam profile maintenance.
Main Methods:
- Constructed a two-dimensional accelerating beam.
- Imposed single and dual off-axis spiral phases.
- Analyzed beam acceleration and transverse intensity profile.
Main Results:
- The two-dimensional beam accelerated in both x and y directions.
- Single spiral phase led to poor transverse profile maintenance.
- Dual spiral phases significantly improved the intensity profile.
Conclusions:
- Two-dimensional accelerating beams exhibit complex dynamics.
- Dual off-axis spiral phases are effective for maintaining beam profile integrity.
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