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attoRAMAN
low temperature confocal Raman microscope
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The attoRAMAN is a powerful, designated low temperature confocal Raman microscope based on the attoCFM I instrument. This innovative product enables state of the art confocal Raman measurements at cryogenic environments combined with magnetic fields of up to 15 T. The attoRAMAN uses a designated Raman laser with 532 nm wavelength for excitation while an ultra-high tranmsission spectrometer with a peltier-cooled back-illuminated CCD camera is used for signal detection. In combination with its state-of-the-art filters and dichroic mirror, the attoRAMAN allows measurements as close as 100 wavenumbers to the excitation source with a resolution of 1/cm (at 1800/mm grating).
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Detection channel
including Raman spectrometer
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Excitation channel using a dedicated Raman laser
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| Optional: Second excitation
channel (e.g. for lithography) |
Optical inspection channel |
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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 RAMAN insert including cryostat and superconducting magnet.
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The microscope uses a set of xyz-positioners for coarse positioning of
the sample over a range of several mm. Developed particularly for cryogenic
applications, the piezo scanner ANSxy100 provides a scan range
of 30 x 30 μm² even 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.
Request Quotation & Support : |
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Available
Controller for this Product: |
| ANC350 |
Piezo positioning controller
for attocube's encoded positioners | |
| ANC300 |
Piezo positioning controller
for attocube's open-loop positioners | |
Complete
System Solutions: |
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Complete system
configurations for this product. |
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| DOWNLOAD our RAMAN flyer with the latest results.
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Magneto-Raman measurements
recorded on an exfoliated single crystal of natural graphite.
Work in cooperation with C. Faugeras, P. Kossacki and M. Potemski;
(LNCM I - Grenoble, CNRS_UJF_UPS_INSA France) |
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Key Features
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true low temperature confocal Raman microscope |
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modular beam splitter and filter optics at room temperature |
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ultra-high transmission spectrometer and peltier-cooled back-illuminated CCD |
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pixel resolution 1/cm at 1800/mm grating |
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measurements as close as 100/cm to the Rayleigh line |
| Benefits
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fits
standard cryogenic and magnet sample spaces |
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broad variety
of applications ranging from simple 2D Raman images to Raman spectra along arbitrary 3D llines wihtin the sample |
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excellent stability
for long integration times and weakest signal detection |
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highest measurement
sensitivity |
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access to a large
area on the sample surface |
| Raman images of epitaxially grown Graphene layers, showing the SiC substrate (top) and the Graphene 2D band (bottom). Left images were recorded at 300 K, right images at 4.2 K. |
| Raman spectra recorded at 4.2 K, depicting (from top to bottom) monolayer and bilayer graphene, and the edge of the latter. The shift in 2D band from mono- to bilayer Graphene corresponds to approximately 14 cm-1. |
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