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Updated: May 24, 2026

Ultrafast Laser-Ablated Nanoparticles and Nanostructures for Surface-Enhanced Raman Scattering-Based Sensing Applications
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Direct laser interference ablating nanostructures on organic crystals.

Hong-Hua Fang1, Ran Ding, Shi-Yang Lu

  • 1State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China.

Optics Letters
|February 21, 2012
PubMed
Summary
This summary is machine-generated.

Two-beam interference ablation precisely controls the surface morphology of organic crystals. This method allows for the fabrication of smooth grating structures without extra processing steps.

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Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Published on: February 27, 2013

Area of Science:

  • Materials Science
  • Optics and Photonics
  • Laser Physics

Background:

  • Organic crystals possess unique optical properties.
  • Laser-based fabrication techniques are crucial for micro/nanostructure creation.
  • Controlling crystal morphology is key for advanced material applications.

Purpose of the Study:

  • To investigate two-beam interference ablation of 1,4-Bis(4-methylstyryl)benzene organic crystals.
  • To analyze the impact of laser parameters on crystal surface morphology.
  • To demonstrate a method for fabricating smooth grating structures.

Main Methods:

  • Utilizing short laser pulses (10 ns, 355 nm) for two-beam interference ablation.
  • Systematically varying laser fluence, interference period, and pulse number.
  • Employing a two-step ablation process (high fluence followed by low fluence).

Main Results:

  • Observed a strong correlation between crystal morphology and molecular interactions.
  • Demonstrated precise control over surface morphology by adjusting laser fluence and pulse number.
  • Successfully fabricated grating structures with smooth surfaces via interference ablation.

Conclusions:

  • Two-beam interference ablation offers a controllable method for modifying organic crystal surfaces.
  • The study highlights the potential for fabricating micro/nanostructures directly on organic crystals.
  • This technique provides a pathway for creating functional optical elements without post-processing.