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Specifications
attoCFM II
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
configuration one single-mode fiber for excitation and detection;
50/50 fiber coupler integrated into laser/detector module LDM600 (for more information, see
SPM fundamentals and electronics section)
LT- compatible objective LT-IWDO, LT-LWDO (see accessory section for more information)
Illumination
excitation wavelength range
limited to wavelength range of single mode fiber
default: 650 nm (others on request)
Detection
detection mode
e.g. reflection, luminescence, flourescence
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 request)
Suitable Cooling Systems
titanium housing diameter 48 mm
bore size requirement designed for a 2" (50.8 mm) cryostat/magnet bore
compatible cryostats attoDRY1000/1100/2100
attoLIQUID1000/2000/3000
(attoLIQUID5000 on request)
Electronics
scan controller and software ASC400 (optional; for detailed specifications please see attoCONTROL section)
laser LDM600 laser/detector module (for detailed specifications please see attoCONTROL section)
Options
sample holder upgrade ASH/QE/4CX quick-exchange sample holder with 8 electrical contacts and integrated heater
with calibrated temperature sensor
ultra-large scan range upgrade 80 x 80 @ 300 K
125 x 125 @ 4 K
closed loop upgrade for coarse positioners resistive encoder, range 5 mm, sensor resolution approx. 200 nm, repeatability 1-2 μm
closed loop scanning upgrade interferometric encoders available
Complete microscope stick attoCFM II