One-dimensional ion-beam figuring for grazing-incidence reflective optics.

Area of Science:

• Optics and Photonics
• Materials Science
• Surface Metrology

Background:

• Grazing-incidence reflective optics are crucial for synchrotron radiation applications.
• Traditional figuring methods can be complex and costly.
• One-dimensional ion-beam figuring (1D-IBF) offers a simplified approach.

Purpose of the Study:

• To demonstrate the integration and effectiveness of 1D-IBF in a compact system.
• To improve the surface accuracy of grazing-incidence optics.
• To present experimental results on various optical samples.

Main Methods:

• Integration of an RF ion source into an existing thin-film deposition system for 1D-IBF.
• Development of a 1D removal function using a rectangular grid.
• Experimental demonstration on spherical and plane mirror samples.

Main Results:

• Achieved final residual errors below 1 nm r.m.s. on plane samples.
• Reduced surface error on a spherical sample by a factor of 12.
• Demonstrated the feasibility of integrating 1D-IBF with thin-film deposition.

Conclusions:

• 1D-IBF is a highly effective technique for high-precision optical surface fabrication.
• The integrated system offers a compact, cost-effective solution for optics manufacturing.
• This method is well-suited for producing optics for 1D synchrotron applications.