Adaptable refractive correctors for X-ray optics

DOI: 10.1364/OPTICA.6.001484

Authors: David Laundy (Diamond Light Source) , Vishal Dhamgaye (Diamond Light Source; Raj Ramanna Centre for Advanced Technology (RRCAT)) , Thomas Moxham (Diamond Light Source; University of Oxford) , Kawal Sawhney (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Optica , VOL 6

State: Published (Approved)
Published: December 2019

Abstract: Advances in x-radiation sources put greater demands on x-ray optics. Fabrication errors in optical elements lead to deformation of the radiation wavefront, which prevents diffraction-limited imaging of the source. A new adaptable x-ray phase compensator using refracting elements has been developed, fabricated, and tested. The compensator makes a sinusoidal correction to the x-ray wavefront with variable amplitude, period, and phase. The adaptable compensator was used to correct two planar compound refractive lenses and a Kirkpatrick–Baez mirror system on an x-ray beamline. Wavefront measurements showed a reduction in the rms wavefront error by a factor of seven for the lenses and three for the mirror system, reducing rms wavefront errors down to of order 𝜆/100 λ/100 . This concept could be used with optics on existing x-ray beamlines to enable diffraction-limited focusing.

Subject Areas: Technique Development, Physics


Instruments: B16-Test Beamline

Documents:
gh5434tgg.pdf