attoCFM II
Sophisticated Tools for Science
attoCFM II
low temperature confocal microscope, highly stable and compact
Technical Specifications
General Specifications
type of instrument
fiber optics based confocal microscope for maximum stability
sensor head specifics
fiber-coupled low temperature compatible aspheric objectives for ultimate stability
Confocal Unit
one single-mode fiber for excitation and detection;
50/50 fiber coupler integrated into laser/detector module LDM600 (for more
information, see SPM fu
key benefits
ultimate longterm stability & ease-of-use
pinhole configuration
pinhole provided by single mode fiber core
pinhole size
dependent on fibers, typically 3 .. 9 µm mode field diameter
LT- compatible objective
LT-IWDO, LT-LWDO (see accessory section for more information)
excitation wavelength range
limited to wavelength range of single mode fiber
default: 650 nm (others on request)
detection mode
e.g. reflection, luminescence, flourescence
detection wavelength range
limited to wavelength range of single mode fiber
default: 650 nm (others on request)
Sample Positioning
total travel range
5 x 5 x 5 mm³ (open loop)
step size
0.05..3 µm @ 300 K, 10..500 nm @ 4 K
fine scan range
50 x 50 µm² @ 300 K, 30 x 30 µm² @ 4 k (optional, open loop)
sample holder
ASH/QE/0 quick exchange sample holder and integrated heater with calibrated
temperature sensor
Suitable Operating Conditions
temperature range
1.5 K..300 K (dependent on cryostat); mK compatible setup available on request
magnetic field range
0..15 T+ (dependent on magnet)
operating pressure
designed for He exchange gas (vacuum compatible version down to 1E-6 mbar on
Suitable Cooling Systems
titanium housing diameter
48 mm
bore size requirement
designed for a 2" (50.8 mm) cryostat/magnet bore
compatible cryostats
(attoLIQUID5000 on request)
scan controller and software
ASC400 (optional; for detailed specifications please see attoCONTROL section)
LDM600 laser/detector module (for detailed specifications please see attoCONTROL
closed loop scanning & global sample
Interferometric encoders for scan linearization and closed loop sample navigation
ultra-large scan range upgrade
80 x 80 ?m2 @ 300 K
125 x 125 ?m2 @ 4 K
closed loop upgrade for coarse
resistive encoder, range 5 mm, sensor resolution approx. 200 nm, repeatability 1-2
sample holder upgrade
ASH/QE/4CX quick-exchange sample holder with 8 electrical contacts and integrated
heater with calibrated temperature sensor
* Resolution may vary depending on applied tip, sample, and cryostat
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© attocube systems AG 2001-2015.
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