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attoRAMAN
low temperature micro-Raman spectroscopy
The cryogenic Raman instrument combines a high resolution, low
temperature confocal microscope with ultra sensitive Raman optics.
This innovative product enables state of the art confocal Raman mea-
surements at cryogenic environments combined with magnetic fields
of up to 15 T. The attoRAMAN is a ready-to-use system and is delivered
with a Raman laser source (532 nm / 633 nm wavelength as excitation
source available), ultra-high throughput spectrometer including a
peltier-cooled, back-illuminated CCD, and a state-of-the-art Raman
controller/software package.
The attoRAMAN uses a set of xyz-positioners for coarse positioning of
the sample over a range of several mm, and is also available with an in-
terferometric encoder for closed loop operation. Developed particular-
ly for cryogenic applications, the piezo-based scanner provides a large
scan range of 50 µm x 50 µm at room temperature, and 30 µm x 30 µm
at liquid helium temperature. The Raman image is obtained by raster
scanning the sample with respect to the laser focus and measuring the
spectral distribution of the Raman signal for each point.
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01 confocal microscope head
02 LT and HV compatible feedthroughs
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03 microscope insert (free-beam optics)
04 superconducting magnet (optional)
05 attoDRY1100 cryostat (optional)
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06 ultra stable titanium housing
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07 xyz coarse positioners
08 xy scanner
09 sample
Schematic drawing of the low temperature attoRAMAN
and the attoDRY1100 cryostat (optional)
10 low temperature compatible objective