Cryogenic Apochromatic Objectives
• negligible chromatic focal shift in working range
• uniform spot size and intensity within apochromatic range
PRODUCT KEY FEATURES
• confocal microscope for transmission with free-beam access
from above, and fiber-based objective from below the s ample
• independent xyz degrees of freedom for sample and
fiber-based objective
• modular beam splitter head outside of cryostat
• sample monitoring via CCD camera (field of view: 50-75 μm)
BENEFITS
Confocal Imaging
• wavelength and polarization filtering of the free-beam channel
for excitation or collection signal possible
• independent wavelengths for excitation and detection due t
• lateral separation between excitation and detection spot of
up to 3 mm
• fits standard cryogenic and magnet sample spaces
• very broad variety of applications, ranging from classical CFM
measurements to Raman spectroscopy
• excellent stability in high magnetic fields
• highest measurement sensitivity
• access to a large area on the sample surface
Photoluminence
Spectroscopy
APPLICATION EXAMPLES
• solid state physic and quantum dot optics
• fluorescence/photoluminescence of quantum dots, nanowires,
2D-layered materials, photonic crystals, single molecules
10 µm
Quantum Dot
Spectroscopy
Laser spot
COMPATIBLE COOLING SYSTEMS
• attoDRY1000/1100/2100
• attoLIQUID1000/2000
The attoCFM IV
microscope module
attoMICROSCOPY
Sophisticated Tools for Science