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Related Experiment Video

Updated: Mar 12, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

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Published on: February 4, 2017

Scattering-assisted second harmonic generation of structured fundamental wave.

Haigang Liu, Jun Li, Xiangling Fang

|November 10, 2016

Summary

Researchers explored scattering-assisted second harmonic generation using structured light. They observed unique harmonic patterns and demonstrated dynamic control, showing potential for nonlinear frequency conversion applications.

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Area of Science:

Nonlinear optics
Quantum optics
Photonics

Background:

Second harmonic generation (SHG) is a fundamental nonlinear optical process.
Structured light offers novel ways to control nonlinear optical phenomena.
Previous studies have explored SHG with structured light, but dynamic control remains a challenge.

Purpose of the Study:

To investigate scattering-assisted second harmonic generation (SA-SHG) of structured fundamental waves.
To analyze the formation of multiple-conical SHG and SHG belts.
To demonstrate dynamic control over the SA-SHG signal.

Main Methods:

Theoretical analysis of SA-SHG in a homogeneous nonlinear medium.
Experimental generation of structured fundamental waves with modulated phase fronts.
Observation and characterization of the generated second harmonic fields.

Main Results:

Observed scattering-assisted multiple-conical second harmonic generation for 1D structured waves.
Observed second harmonic belts for 2D structured waves.
Experimental results align with theoretical predictions, confirming dynamic control.

Conclusions:

Scattering-assisted SHG provides a method for dynamic control of nonlinear frequency conversion.
The observed phenomena have potential applications in advanced photonic devices.
This work advances the understanding and application of structured light in nonlinear optics.