Specifications
attoCFM IV
General Specifications
type of instrument confocal microscope for transmission experiments with one free-beam
and one fiber based channel
sensor head specifics one channel with unique low temperature compatible achromatic objectives with high
numerical aperture, optimized for different wavelength ranges, and one channel with
fiber-coupled low temperature compatible aspheric objective
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
free-beam channel: 400 .. 1000 nm
default: 650 nm (others on request)
fiber channel: limited to wavelength range of single mode fiber
default: 650 nm (others on request)
Detection
detection mode e.g. transmission, reflection, luminescence, flourescence, Raman (optional)
detection wavelength range free-beam channel: 400 .. 1000 nm
default: 650 nm (others on request)
fiber channel: limited to wavelength range of single mode fiber
default: 650 nm (others on request)
Sample Positioning
total travel range independent degrees of freedom for sample of 3 x 3 x 2.5 mm³ (closed loop)
and for fiber-based objective of 3 x 5 x 5 mm³ (closed loop)
step size 0.05..3 µm @ 300 K, 10..500 nm @ 4 K
fine scan range sample: 30 x 30 µm² @ 300 K, 12 x 12 µm² @ 4 K (open loop)
sample holder Ti plate with aperture of 8 mm in diameter 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..14 T (dependent on magnet)
(16 T compatible version available on request)
operating pressure designed for He exchange gas