Specifications
attoAFM/CFM
General Specifications
type of instrument combined confocal (CFM) and atomic force microscope (AFM)
sensor head specifics AFM: Akiyama probe (quartz tuning fork combined with a mircomachined cantilever)
CFM: attoCFM I external optics head and low temperature apochromatic
Operation Modes
imaging modes optically detected magnetic resonance (ODMR), AFM, CFM
slope compensation 2 axis scan plane correction
z feedback AFM: PI feedback loop for amplitude modulation (AM), phase modulation (PM) or frequency modulation (FM)
using included PLL
Resolution*
measured RMS z-noise (constant force @ 4 K, 5 ms pixel time) < 0.2 nm (expected for attoLIQUID1000)
< 0.5 nm (guaranteed for attoLIQUID1000)
z bit resolution @ 4 K 7.6 pm at 2 μm scan range
Confocal Unit
configuration compact and modular design, two or more optical channels
standard configuration: 1 excitation channel,1 detection channel
quick-exchange of optical components beamsplitters, filter mounts for up to 4 filters/ polarizers (1" diameter), optional piezoelectric rotator with
filter mount
LT- compatible objective LT-APO/VIS, LT-APO/VISIR, LT-APO/NIR
(see accessory section for more information)
inspection unit sample imaging with large field of view: ~75 μm (attoDRY), ~56 μm (attoLIQUID)
Illumination
excitation wavelength range
400 .. 1000 nm
default: 650 nm (others on request)
Detection
detection mode
e.g. optically detected magnetic resonance (ODMR), luminescence, fluorescence
Sample Positioning
total travel range independent degrees of freedom for tip and sample of 2 mm x 3 mm x 2.5 mm (closed loop)
step size 0.05..3 μm @ 300 K, 10..500 nm @ 4 K
fine scan range 30 μm x 30 μm x 4.3 μm @ 300 K, 12 μm x 12 μm x 2 μm @ 4 K (open loop)
sample holder Ti plate with integrated heater and 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 attoLIQUID1000/2000
(attoLIQUID3000/5000 & attoDRY1000/1100/2000 on request)
Electronics
scan controller and software ASC500 (for detailed specifications please see attoCONTROL section)
laser LDM600 laser/detector module (for detailed specifications please see attoCONTROL section)
* Resolution may vary depending on applied tip, sample, and cryostat