Achromatic catadioptric microscope objective in deep ultraviolet with long working distance
P. Huang, Dietrich Leibfried
We present a microscope imaging optics system that is suitable for simultaneously detecting two species of electrically trapped atomic ions for quantum information processing. The proposed 10x objective features all-spherical surfaces in a catadioptric modification of the Schwarzschild two-mirror configuration and is achromatic at 313 and 280 nm, the two wavelengths of the laser-induced fluorescence from 9Be from and u24Mg^u+. To correct for aberrations from the fused silica vacuum window, we use a zero-power doublet made of a positive Calcium fluoride and a negative fused silica meniscus to form an air-gapped Steinheil doublet facing the object. As a result, diffraction limited images are obtained for both wavelengths at a numerical aperture (NA) of 0.5 and a field of view (FOV) of 0.1 mm in diameter. The long working distance (> focal length) of this objective allows imaging of the ions through the vacuum window.
achromatic UV-imaging optics, atom trapping and cooling, diffraction limited resolution, quantum computation, quantum information processing
and Leibfried, D.
Achromatic catadioptric microscope objective in deep ultraviolet with long working distance, Proc. Intl. Soc. of Photo-Optical Instrumentation, San Diego, CA, USA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50073
(Accessed December 9, 2023)