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Quantum optics experiments often require cryogenic temperatures in combination with optical access to the sample space . Most experimental setups contain numerous optical elements that need to be precisely arranged on an optical table to shape and prepare the incident light , as well as to efficiently collect and convert the emitted light from the sample . The available space on the optical table in such cases is of paramount importance to many complex setups .

The revolutionary concept and design of the attoDRY800 present the perfect solution to satisfy these demanding requirements : it consists of an ultra low vibration cold breadboard platform which is fully integrated into an optical table . The cryocooler assembly is located in the otherwise unused space underneath . This unique design ensures a free workspace and unobstructed optical access to the cold sample from all directions on the optical table . Apochromatic objectives with high numerical aperture ( NA = 0.81-0.95 ) can either be integrated into the cryostat , into the vacuum shield , or put in close working distance next to the optical windows from the outside . This ensures extremely low drifts and optimal collection efficiency .

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Being a closed-cycle cryostat , the attoDRY800 is the perfect replacement for all helium flow cryostat setups , adding the huge advantage that it requires no liquid cryogens and thus minimizing running costs . In addition , a fully automated temperature control between 3.8 and 320 K conveniently enables unattended long measurement cycles .

Most other off-the-shelf closed-cycle cryostats suffer from severe vibrations at the sample location , which typically are in the range of many microns . Thanks to our patented vibration isolation technique , the residual vibrations on the cold plate of the attoDRY800 were measured to be around 2.6 nm peak-to-peak ( vertical direction ) only . Hence , with the attoDRY800 even extremely sensitive measurements are possible . Its cold breadboard sample space is designed to host several of attocube ’ s patented nanopositioners , as well as complete microscope or photonic probe station solutions .

PRODUCT KEY FEATURES

• cold breadboard integrated into optical table

• low vibrations < 5 nm peak-to-peak

• fully automated variable temperature 3.8 .. 320 K

• customizable vacuum shroud

BENEFITS

• free workspace & obstruction-free optical access

• high sample throughput due to fast cooldown

• low running costs ( no liquid cryogens )

• flexible combination with attocube equipment : patented cryogenic positioning solutions with multi-degrees of freedom