Optimized fabrication of silicon nanofocusing x-ray lenses using deep reactive ion etching
2007
The authors describe an improved production route for silicon nanofocusing lenses for hard x rays using e-beam lithography and deep reactive ion etching. As compared to previous prototypes, these optics have a significantly improved from fidelity, reducing spherical aberrations. Close to an ideal performance for the focusing of hard x rays is achieved with these optics, reaching a lateral beam size of about 50nm. The lens profile is checked by scanning electron microscopy.
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