The Magneto-Optic module integrates a bipolar magnet directly into the cryogenic sample chamber with fields up to 0.7 Tesla. As an add-on module for the Cryostation, the unit provides the same stability, automation, and control found in all Montana Instruments closed-cycle cryostats.
Demanding magneto-optic applications are simple to setup, with a design that preserves full sample and optical access. The unit inserts magnet poles into two of the four standard optical ports, with bores through the magnet cores to allow laser illumination of the sample. The top optical access port can be configured with a recessed objective for low working distance applications.
The field strength depends on the configuration used, with various pole spacing and pole tip options available. An adjustable radiation shield accommodates unique experimental setups, allowing users to expand or resize the sample space or make adjustments to allow for more optical access options. The system includes an automatic zero function to remove any field stored in the iron poles by using an alternating decreasing field to degauss the poles and effectively eliminate the field with no current present.
The system includes a Hall Probe calibration fixture, power supply, and water cooling for the magnet. Compatible accessories and add-ons allow users to configure the instrument for unique experimental requirements, including optional built-in piezo stages for sample motion.
|Key Features||Key Benefits|
|Cryostat||Ultra-stable closed-cycle optical cryostat|
|Sample Space||Tabletop mounting architecture|
|Thermal Stability||Rock solid temperature stability|
|Mechanical Stability||Vibrations are no longer a concern|
|Sample Drift||CTE-cancelling sample platform|
|User Interface||Control via Windows based software on mini-laptop computer|
|Remote Interface||TCP/IP and LabVIEW|
|Control Unit||Powerful built-in electronics|
|Compressor||Variable Flow Helium compressor|
|Sample Mounting||Sample in vacuum|
|Optical Substrates||Fused silica AR coated 400-1000nm|
Optical access through the poles, high NA access from the sides, and low working distance from the top
Exchangeable pole tips and bipolar field control (<5 mT) integrated into the user interface
Easily remove magnets and window housing for easy sample access during setup