Contour optimization of triangular Laue bent crystal for low wavefront distortion applications.

Area of Science:

• Optics and photonics
• Materials science
• Crystallography

Background:

• Crystal bending is crucial for X-ray monochromatisation and focusing in high-energy beamlines.
• Traditional triangularly bent crystals face limitations in accuracy and dynamic range.

Purpose of the Study:

• To propose and validate a wavefront-preserved bending design for triangular crystals.
• To enhance surface shape accuracy and operational dynamic range compared to conventional methods.

Main Methods:

• Developed a theoretical model for bending triangular crystals.
• Introduced an iterative approach linking crystal width profile to bending surface.
• Investigated crystal surface properties under various bending forces and radii.

Main Results:

• Significantly minimized meridian slope errors in a 2D region.
• Improved the operational dynamic range of bent crystals.
• Demonstrated enhanced bending accuracy in experimental verification.

Conclusions:

• The proposed wavefront-preserved bending design offers superior performance.
• The method is feasible and robust, even with fabrication defects.
• This architecture advances X-ray optics for high-energy applications.