THE NEW attoCFM I
low temperature, scanning confocal microscope, highly modular and flexible
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STABLE. MODULAR. EASY TO USE.

The novel multipurpose optical head provides an ideal platform for a large variety of measurement tasks in the field of confocal microscopy, while setting new standards for stability and ease-of-use.

	Detection channel (e.g. Si detector (PL/Fluorescence) or grating spectrometer (Raman spectroscopy)
	Excitation channel
	Optional: Second excitation channel (e.g. for lithography)
	Optical inspection channel

At the heart of the optical head, there are up to three identical channels, which can be used for confocal excitation and detection of free-beam optical signals. Each channel features a FC/APC fiber port to connect to a laser source or an appropriate detector (such as a Si detector for photoluminescence or a spectrometer for Raman measurements). The free optical beam can be adjusted conveniently via two (theta, phi) mirrors before it is sent along the optical axes with the other channels via an exchangeable dichroic beam splitter. Each channel is designed in such a way, that up to two filters plus an additional optional rotatable polarizer for each of the beams can be added. Furthermore, a broadband LED illumination allows for optical inspection of the sample together with a CCD camera.The optical beam is then guided through the center of the setup down to the low temperature compatible, high-NA objective, which focuses the beam onto the sample. While the objective stays fixed, the sample is sitting on top of a stack of xyz coarse positioners and a suitable scanner for image acquisition.

Typically one channel for excitation and one for detection are used in combination with appropriate filters for Photoluminescence/Fluorescence imaging as well as for Raman spectroscopy. New techniques such as cryogenic in-situ optical lithography use an additional third channel for exposure of an appropriate photoresist after monitoring the luminescence signal of e.g. single quantum dots in order to manufacture microcavities around those single quantum objects.

With its all-new optical head, the attoCFM opens the door to a whole new plethora of application fields through its easy-to-use and modular design. Whether your are working at the forefront of science in the fields of photoluminescence / fluorescence of e.g. semiconducting nanostructures (quantum dots, nano wires, photonics crystals, NV colour centers,…), Raman spectroscopy (e.g. on graphene, carbon nanotubes, high-Tc superconductors) or device fabrication for quantum optics (such as deterministic in-situ lithography on self-assembled quantum dots to form strongly coupled cavities), the attoCFM is the tool of choice to accelerate your research and and to achieve what matters most: creating scientific impact.

	01 LT and HV compatible feedthroughs 02 vacuum window 03 microscope insert in free-beam optical design 04 superconducting magnet (optional) 05 liquid He dewar (optional) 06 ultra stable Titanium housing 07 xyz coarse positioners 08 xy scanner 09 sample 10 low temperature compatible objective
Scheme of a cryogenic CFM insert including cryostat and superconducting magnet.

Scheme of the attoCFM insert in combination with the attoDRY100 cryogen-free cryostat showing the optical beam path.	Photo of the attoDRY1000-CFM setup. This cryogen-free cooling system was specifically designed to provide an ultra-low vibration measurement platform for cryogenic scanning probe experiments such as confocal microscopy, without the need for liquid helium.

Download:

Detailed Specification Sheet

Complete System Solutions:
attoCRYO	Suitable low vibration cryostats for this product.