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    Cora 7X00 Raman Spectrometer with Fiber-optic probe
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Cora 7X00 Raman Spectrometers

TE-Cooled Benchtop Raman Spectrometer

The Cora 7X00 series of high-performance Raman spectrometers has been developed for use in academic and industrial research. It provides high resolution, a wavelength of 3 cm-1 to 4 cm-1 up to 15 cm-1, a low noise level, and a high sensitivity in a space-saving 19-inch housing, which makes it easy to fit into your laboratory.

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Key Features

Specialized measurements – The right wavelength

In order to achieve the best possible Raman signal for non-fluorescent and fluorescent samples, you can choose the ideal excitation wavelength: 532 nm, 785 nm, or 1064 nm. The shorter the wavelength, the stronger the Raman signal. In many colored substances and uncolored organic compounds, fluorescence superimposes the Raman signal. In this case, a lower wavelength often provides a better Raman signal. The Cora 7X00 Raman spectrometers allow you to choose the optimal wavelength for the samples in question: 532 nm, 785 nm, or 1064 nm.

Flexible use – Measurements with fiber probe

With the fiber probe, the Cora 7X00 Raman spectrometer can be easily attached to experimental setups. This allows the easy acquisition of data from a number of experiments without having to change the spectrometer setup. If there is a lack of space, the spectrometer can be stored under the table. The vial holders are easily attached to the fiber probe and enable the measurement of liquids and powders in vials.

Real spectra – Access to raw data

In R&D it is important to have unprocessed raw data so that different users can perform separate analyses of the results. Cora 7X00 spectrometers give you this access. Correction of baseline or background, and the smoothing of a spectrum can be activated or deactivated by a single mouse-click.

Quick measurement on low-concentration substances – High throughput of light

You analyze samples with a low-scattering cross-section or low concentrations and do not want to wait for data for minutes or hours? The transmission gratings, specially made for Cora 7X00, offer maximum throughput of light and achieve the best possible sensitivity. Thus, a 0.01 M aqueous solution of ammonium persulfate already generates a clearly identifiable signal at 532 nm after 8 s integration time. Using a benzonitrile sample, this is achieved at 10 ms acquisition time and a signal strength of 300 counts.

High signal, low noise – Cooled detectors

For the analysis of low-scattering samples or the measurement of low-concentrated samples, a high signal-to-noise ratio is needed. This is why all Cora 7X00 Raman spectrometers are equipped with cooled detectors. Depending on the wavelength, CCD chips (532 nm and 785 nm) or InGaAs arrays (1064 nm) are used. Instruments with 785 nm excitation wavelength (Cora 7200) are optionally available with deep-cooled detectors; the 1064 nm instrument (Cora 7300) comes with a deep-cooled detector as standard. Thus, a benzonitrile sample can be measured with a 785 nm laser and 450 mW laser power in 10 ms measuring time.

Technical Specifications

Cora 7100 Cora 7200 Cora 7200 Deep Cooled Cora 7300 Deep Cooled
Excitation wavelength 532 nm 785 nm 785 nm 1064 nm
Spectral range100 cm-1 to 3200 cm-1100 cm-1 to 3200 cm-1100 cm-1 to 2000 cm-1200 cm-1 to 1800 cm-1
Resolution (FWHM) 4 cm-1 to 5 cm-1 4 cm-1 to 5 cm-1 3 cm-1 to 4 cm-1 10 cm-1 to 15 cm-1
Laser power 50 mW 0 mW to 450 mW (adjustable) 0 mW to 450 mW (adjustable) 0 mW to 450 mW (adjustable)
Spectrograph f/2 Transmission Volume Phase Grating
Integration time 5 ms to 600 s 5 ms to 600 s 5 ms to 900 s 1 ms to 30 s
Wavelength calibration Automatic via software
Detector array 2048 px x 64 px CCD 2048 px x 64 px CCD 2048 px x 64 px CCD 512 px InGaAs
Detector cooling approx. -5 °C approx. -5 °C approx.-55 °C approx.-55 °C
Dimensions (DxWxH) 411 mm x 426 mm x 151 mm (16 in x 17 in x 6 in)
Weight ~ 13 kg (28.6 lb) ~ 15 kg (33 lb)
Operating ranges 0 °C to 40 °C; 0 % RH to 80 % RH
A/D converter 16 bit
Power consumption <25 W <75 W
Battery (optional) n/a
Power input 110 / 230 V AC
Sampling options
Cora 7X00: Fiber-optic Raman probes
Fiber-optic probe Coaxial, AR-coated, filtered
Fiber-optic trigger probe n/a
Probe vial holder set Insert for vials, tubes, cuvettes for use on fiber-optic probe
Operating system Windows-based (32-bit or 64-bit)
System control External PC
GUI Cora 7000 Software (PC)
Data ports USB 2.0
Security Tiered password structure (3 levels), event logging, and reporting
Internal storage n/a
Wireless connectivity n/a
Spectral librariesFactory library; user-defined; 3rd party options
Software development kit (optional) DLL and sample code for C/C++

Application Reports