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attoCFM I External Optics Head
flexibility you would only expect from room temperature equipment
The external optics head of the attoCFM I has been
designed with the goal to offer a maximum amount of
flexibility and mechanical stability. At the same time,
it provides an unmatched ease-of-use through clever
and convenient features for alignment and exchange
of optical components.
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Detection channel
(e.g. Si detector for
photoluminescence/
fluorescence, or a
grating spectrometer)
The head consists of two or more identical optical
channels, each of which can be independently configured
for excitation or detection of optical signals. Each
channel features an FC/APC fiber port (removable for
free-beam coupling), a collimator (adjustable for
different wavelengths), easily accessible theta/phi tilt
mirrors, removable drawers for exchangeable filters,
and a exchangeable beam splitter mount.
The concentric optical beams of all channels can be
guided altogether via a steering mirror, before they
enter (or leave) the cryostat insert through an optical
window on top of the microscope insert. Besides, the
head includes a convenient and powerful inspection
optics with CCD camera.
In fact, with this head, the attoCFM I for cryogenic
operation offers a flexibility and convenience usually
only seen in room temperature instruments.
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Excitation channel
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Optional: additional
excitation channel
(e.g. for lithography)
Optical inspection unit
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COMPONENTS
01 FC/APC fiber port
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02 Collimator
03 Mirror
04 Up to two filter mounts (optional)
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or rotatable polarizer (optional)
05 Dichroic beam splitter (exchangeable)
with optional laser filter and detection filter
06 LED illumination (broadband)
07 CCD camera for inspection
08 Beamsplitter
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09 Steering mirror for the combined beams
10 Low temperature compatible objective
11 Sample
12 XYZ coarse positioners + XY scanner
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