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Attocube
attoDRY800 Cryostat
DETAILS
attoDRY800
optical cryostat
○ cold breadboard integrated into optical table
→ obstruction-free work space & optical access
○ market leading low drift & vibration performance
→ enables sensitive long-term measurements
○ high quality vacuum system with turbo pump
→ keeps your samples clean
Read the White Paper
"Wide-field cryo-microscopy with the attoDRY800 optical cryostat"
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 optical cryostat 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.
Being a closed-cycle cryostat, the attoDRY800 is the perfect replacement for all optical 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 optical cryostat 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.
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attoDRY800 Vacuum Shrouds
With the attoDRY800 optical cryostat the user receives a high quality optical table of his choice, which has an integrated cold plate of 75 mm in diameter. The cryostat is an integral part of the table, and comes in a standard configuration. The position of this cold plate can be chosen upon order. The vacuum shroud can have an almost arbitrary shape depending on the experimental needs of each user. We distinguish between standard configurations, which cover the most typical applications, and fully customized configurations.
Standard Shrouds
From more than 25 years working at the forefront of cryogenic optics applications, as well as learning from our users, and anticipating typical configurations, we have designed several standard vacuum shrouds and cold shields, that are intended for certain types of positioners, sample holders, working distances and objectives.
These options constitute an economic pre-configured set of components that give the user a head start for the research with optics at low and variable temperatures. Most of our standard shrouds feature clever extensions by default, such as a feedthrough ring for optional additional DC, SMA and fiber feedthroughs, as well as a 30 mm and 60 mm cage system with quick release adapters centered around the top window.
Customized Shrouds
Anything above the table surface can be customized according to the technical requirements and preferences of the user and his/her application. In the following, we show a collection of previously sold customized vacuum shroud configurations for the attoDRY800 optical cryostat. Alternatively, we assist customers in designing their own specialized low temperature setup and corresponding vacuum shroud.
Please note that in such cases, certain specifications can only be estimated. attocube will be happy to help with years of experience regarding special requirements in cryogenic environments. Customized shrouds and setups have a slightly longer delivery time compared to standard versions. Please do not hesitate to contact us if you have special requests.
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