Fabrication of microprism arrays using direct femtosecond-laser figuring and finishing

Area of Science:

• Optics fabrication
• Laser material processing
• Nanotechnology

Background:

• Traditional optics fabrication methods struggle with high-precision sub-aperture figuring.
• Need for flexible, non-contact techniques in advanced optics manufacturing.

Purpose of the Study:

• Investigate femtosecond laser methods for microprism array fabrication.
• Demonstrate precision material removal and sub-nanometer surface roughness.
• Establish a foundation for ultrafast-laser-based freeform optics.

Main Methods:

• Utilized femtosecond lasers for non-contact sub-aperture figuring and finishing.
• Developed a one-step shaping and finishing technique.
• Fabricated novel microprism arrays.

Main Results:

• Successfully predicted and created microprism arrays.
• Achieved high precision material removal.
• Maintained sub-nanometer surface roughness.

Conclusions:

• Femtosecond laser processing offers a viable solution for high-precision optics fabrication.
• The developed technique is foundational for ultrafast-laser-based freeform optics.
• This method enables flexible and non-contact manufacturing of micro-optical components.