attoDRY800
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attoDRY800 Optical Cryo-Microscope
integrated apochromatic low temperature optics for maximum collection efficiency
vacuum shroud with 5 optical windows
When collecting small optical signals, e.g. from single photon emitters,
which constitute promising candidates for solidstate based qubits,
it is a crucial requirement to maximize the collection efficiency. This
is best done with objectives that feature high numerical apertures,
which usually implies a low working distance. In this case getting the
objective close to the specimen is necessary. Most high quality optics
are designed for room temperature use, which would not survive periodic thermal cycling. Putting an objective outs ide of a cryostat often
results in large drifts, which are inacceptable for the long measurement
cycles required when focusing on a single quantum emitter.
The solution is provided by the attoDRY800 optical cryo-microscope:
based on the unique low vibration design of the attoDRY800 cryo-opti
cal table, it features a fully integrated cold objective, hence minimizing
drift while maximizing the collection efficiency. The apochromatic
objective is located in cryogenic vacuum in close proximity to the