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Quantum Design OptiCool® Optical Cryostat
OptiCool® and OptiCool® Vector 7 Tesla Magneto Optical Cryostat
The Quantum Design OptiCool optical cryostat is a cryogen-free magneto-optical cryostat designed for low-temperature optical experiments. It provides fully automated stable temperature control from 1.7 K to 350 K and supports high magnetic fields up to 7 Tesla, making it ideal for magneto-optical spectroscopy, Raman spectroscopy, and photoluminescence measurements. The OptiCool platform also has the low vibration and stability that make it an ideal cryogenic optical measurement system. The OptiCool leverages Quantum Design’s 40+ years’ experience in engineering and manufacturing automated temperature and magnetic field control systems.
The standard OptiCool features a 7-tesla split-conical magnet with field perpendicular to the table and large volume of field uniformity, ±0.3% over a 3 cm diameter spherical volume. Its 7 side windows allow for unprecedented optical axis to a large experimental volume with uniform field.
The OptiCool Vector provides a magnetic field up to ±4 T perpendicular to the optical table and ±1 T in the plane parallel to the optical table. The four side windows in the X and Y axes of the magnet allow for transmission and reflection experiments in-plane parallel to the table. The top and optional bottom window in the Z direction allow for reflection or transmission experiments perpendicular to the optical table. The magnet power supplies in the OptiCool Vector allow users to precisely set the magnetic field direction relative to their sample and optical systems.
Cryostat for optical experiments
- Colour Centres (e.g., Diamond Nitrogen Vacancies)
- Quantum Optics
- 2D Materials (e.g., Transition Metal Dichalcogenides)
- Spintronics
- AFM / Microscopy
- MOKE / CryoMOKE
- Raman / FTIR Spectroscopy
- UV / VIS Reflectivity & Absorption
- Time Resolved Magnetic Spectroscopy
- Magneto-Excitons
- Anisotropic Magnetic Single Crystals
- Magnetic Thin Films
FEATURES
- Temperature Range – The system provides precise temperature control from 1.7 K to 350 K, enabling reliable cryogenic optical measurements for quantum materials and semiconductor research.
- Magnetic Field – The integrated superconducting magnet provides fields up to 7 Tesla, enabling magneto-optical measurements such as MOKE and spintronics experiments.
- Optical Access – Multiple optical access ports allow integration with Raman spectroscopy, photoluminescence, and quantum optics experiments.
- 8 Optical Access Ports: 7 Side Ports (NA > 0.11) – 1 Top Port (NA > 0.7)
- Temperature Range: 1.7 K to 350 K
- 7 T Split-Coil Conical Magnet
- Low Vibration cryostat: <10 nm peak-to-peak
- 89 mm x 84 mm Sample Volume
- Automated Temperature & Magnet Control
- Cryogen Free
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MODELS
7 Tesla
- 8 Optical Access Ports:
- 7 Side Ports (NA > 0.11)
- 1 Top Port (NA > 0.7)
- Optional Bottom Port
- Temperature Range: 1.7 K to 350 K
- 7 T Split-Coil Conical Magnet
- Low Vibration: <10 nm peak-to-peak
- 89 mm x 84 mm Sample Volume
- Automated Temperature & Magnet Control
- Cryogen Free
Vector Magnet
- 5 Optical Access Ports:
- 4 Side Ports (Along X and Y Axes)
- 1 Top Port (Along Z Axis)
- Optional Bottom Port
- Temperature Range: 1.7 K to 350 K
- 4(Z)-1(X)-1(Y) Vector Magnet
- Low Vibration: <10 nm peak-to-peak
- 89 mm x 84 mm Sample Volume
- Automated Temperature & Magnet Control
- Cryogen Free
OptiCool Flex
The newest addition to the cryogen-free OptiCool® family, OptiCool Flex,
focuses on an expansive workspace volume to give unprecedented flexibility to
your test design by removing the magnet present in other OptiCool models. The
result is an experiment cavity of over 2,000cm^3, more than 4 times the volume
of other OptiCool models. It also brings all the expected features of the OptiCool
platform, market leading cryogenic optical access, fully automated cooldown,
seamless temperature control from 350 K to 1.7 K, ultra-low vibration, and our
flexible and innovative sample pod technology.
Sample Pods
The OptiCool’s Sample Pod provides a place to build and customise your experiment on the bench. When you are ready to make a measurement, the Sample Pod easily plugs into the pre-wired temperature control column. Having multiple experiments arranged on multiple pods allows you to switch experimental hardware quickly. Sample Pods are available in both a standard configuration and a large-volume configuration depending on the experimental needs. Each type of pod can be further configured by changing the riser pieces (available in three lengths; included with the system) to adjust the height of the mounting plate.
Standard Sample Pod – Allows for mounting plate positions at 56.4 mm, 32.8 mm and 12.4 mm below the magnet centre.
Large-Volume Sample Pod – Allows for mounting plate positions at 131.3 mm, 111.0 mm and 87.4 mm below the magnet centre.
Sample Positioning
Many optical applications require precise positioning of the sample to the optical path for focusing or examination of an area of interest. The ability to scan the sample is also required for 2D imaging of sample properties. To meet these needs the OptiCool cryostat can be configured with a piezo-based nanopositioning stack to move your sample in situ. The nanopositioner option comes with all the adapters needed to mount the nanopositioners onto a pod, specialised cryostat wiring, cabling that can connect to the piezo controller, and a thermal link specifically designed for use in the OptiCool. The nanopositioner stack can be mounted on the standard pod or on the large-volume pod depending on experimental needs.
OptiCool nanopositioner on standard pod
OptiCool nanopositioner on large-volume pod
OptiCool nanopositioner with thermal link
Windows and Objectives
Optical experiments can require a variety of windows and microscope objectives. To address these needs Quantum Design offers window and objective configuration options, including a low working-distance top window option, vacuum objective mounting hardware, and a bottom access window. The low working-distance top window reduces the minimum working distance from 15 mm to about 3 mm between the top of the outer window and the underside of the inner shield window. The hardware allows you to directly mount a wide variety of objectives at close spacing using the included window clamp and standard off-the-shelf adaptor rings. This means you can make adjustments or swap out objectives while the sample remains cold. Quantum Design also offers a Zeiss 100x LD EC Epiplan-Neofluar, infinity-corrected objective mounted inside the cryostat. This objective offers a 0.75 NA and a working distance of 4 mm. A kit is also available to mount your own objectives in vacuum if desired. A bottom access window is available for the cryostat, allowing transmission measurements along the magnet axis, perpendicular to the surface of the optical table.
OptiCool room temperature objective
OptiCool low working-distance window
Testimonials
“Integrating the OptiCool® into my research program will allow for accessing experimental phase space in complex materials that simply wasn’t available to my group in the past. Innovative products advance science and the OptiCool certainly meets this standard.”
Prof. Richard Averitt of the Physics Department at the University of California San Diego
“A lot of my research over the years has been in the far infrared or terahertz. And so I think that the OptiCool® provides a really exciting opportunity to do novel far infrared spectroscopy on materials in a magnetic field environment.”
Prof. Richard Averitt, UC San Diego
Read the Physics World article on the OptiCool
