Related Experiment Video
Updated: Jul 23, 2025
06:16
Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
7.6K
Abruptly Autofocusing Vortex Beams for Rapid Controllable Femtosecond Two-Photon Polymerization
Erse Jia1, Chen Xie1, Yue Yang1
1Ultrafast Laser Laboratory, Key Laboratory of Opto-Electronic Information Technical Science of Ministry of Education, School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China.
Materials (Basel, Switzerland)
|July 14, 2023
Summary
Structured-beam-assisted Two-Photon Polymerization (2 PP) enables rapid micro-fabrication. Tunable Abruptly Autofocusing Vortex (AAFV) beams facilitated the creation of 3D micro-traps for particle manipulation.
Area of Science:
- Optics and Photonics
- Materials Science
- Microscopy and Microanalysis
Background:
- Two-Photon Polymerization (2 PP) is a versatile technique for creating complex 3D microstructures.
- Achieving precise control over micro-fabrication processes remains a challenge.
- Structured light beams offer potential for enhanced micro-fabrication capabilities.
Purpose of the Study:
- To develop and demonstrate a novel micro-fabrication method using structured beams.
- To investigate the use of Abruptly Autofocusing Vortex (AAFV) beams in 2 PP.
- To create a 3D micro-trap array for particle manipulation.
Main Methods:
- Theoretical design and experimental generation of tunable AAFV beams using a Spatial Light Modulator (SLM).
- Assisted micro-fabrication of a bowl-shaped 3D micro-trap array via 2 PP with a one-step exposure technique.
- Characterization of the fabricated microstructures and their trapping capabilities.
Main Results:
- Successful generation of AAFV beams with controllable spatial intensity distributions.
- Fabrication of a bowl-shaped 3D micro-trap array with high fidelity.
- Demonstration of effective trapping and spatial positioning of micro-particles of various diameters.
Conclusions:
- AAFV beam-assisted 2 PP is a rapid and flexible method for micro-fabrication.
- The fabricated 3D micro-traps show potential for applications in fiber optics and cell studies.
- This technique offers a novel approach for precise micro-particle manipulation.
