LINE SCANNING TEMPORALLY FOCUSED TWO-PHOTON LITHOGRAPHY SYSTEM

Smart overview of the Invention

The patent application introduces a line-scanning temporally focused two-photon lithography (LS-TFTPL) system designed to enhance multi-photon lithography processes. This system is capable of creating three-dimensional structures with high throughput, addressing limitations of existing planar fabrication techniques. The system utilizes a pulsed laser and various optical components to modulate and focus light pulses, enabling precise alteration of target materials at the voxel level.

Technical Components

Key components of the LS-TFTPL system include a pulsed laser and first optical elements that expand the light pulses into an elongated cross-section. A digital micromirror device (DMD) is used to modulate these light pulses with a linear pattern and disperse their spectral components. Subsequent optical elements focus these dispersed components onto a target material, altering it within selected voxels that correspond to the linear pattern.

Methodology

The method involves generating a pulsed light beam, expanding it, and modulating it to create an independently selected linear pattern. The spectral components are then dispersed and focused at a specific line within a target material. This process alters the material in selected voxels through mechanisms such as photopolymerization, ablation, and dielectric breakdown. The system can handle various materials, including gels, glasses, and nanomaterials.

System Configuration

The system configuration includes an optical pulse generator, optical elements for beam expansion, and a movable reflective component. The DMD modulates the light pulses and disperses their spectral components, which are then focused by additional optical elements. The system may also incorporate a galvanometric scanner, a camera for process monitoring, and a dichroic mirror for directing light to the camera.

Applications and Benefits

This LS-TFTPL system provides a high-throughput solution for creating complex three-dimensional nanostructures, overcoming the limitations of traditional two-dimensional lithographic techniques. By enabling precise control over light modulation and focusing, the system facilitates the development of advanced materials and devices across various fields, including electronics, photonics, and biomedical engineering.