Nondestructive single-shot soft x-ray lithography and contact microscopy using a laser-produced plasma source

Area of Science:

• Optics and X-ray Physics
• Materials Science

Background:

• Soft x-ray lithography and microscopy using laser-produced plasma sources are hindered by debris-induced specimen damage.
• Previous methods faced limitations in specimen preservation and apparatus complexity.

Purpose of the Study:

• To introduce a toroidal relay optic system to mitigate debris damage in soft x-ray applications.
• To enhance the practicality and efficiency of soft x-ray lithography and microscopy.

Main Methods:

• Implementation of a toroidal relay optic to redirect debris away from the specimen.
• Integration of a vacuum-compatible, soft x-ray transparent silicon nitride (Si3N4) window.

Main Results:

• Successful preservation of specimens by eliminating debris impact.
• Enabled the use of a permanent, vacuum-retaining Si3N4 window, simplifying experimental setup.
• Achieved short exposure times of approximately 2 nanoseconds.

Conclusions:

• The toroidal relay optic is a significant advancement for debris-free soft x-ray lithography and microscopy.
• This technology simplifies specimen handling and allows for rapid, high-resolution imaging.
• The system offers a robust solution for advanced soft x-ray applications.