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Raman Systems R-3000 Spectrometer
Features
Fully Integrated SystemThe Raman Systems R-3000 comes with a choice of 785 nm or 532 nm solid-state diode laser; a fiber optic spectrometer with optional TE cooling; an "all-in-one" fiber optic probe for liquids, solids and powders; focusing and calibration caps; a software-controlled laser shutter and operating software; a sample holder; and safety goggles. The R-3000-785 base price is $14950; the R-3000-532 base price is $18300.
Cooled Optical Bench
The R-3000 is available with an optional
thermoelectrically cooled CCD array, which allows integration times of up
to 4 minutes. The CCD is maintained at a constant temperature, eliminating
the need for dark current recalculation -- an advantage for applications
where turning the laser off and on to take dark scans is impractical. Solid-state Laser
The R-3000 uses a 500 mW 785 nm (red) solid-state diode laser that is stable enough for use with focused probes -- for measurements through containers and windows -- and that has a wavelength range of ~200-2700 cm-1. Also available are 25 mW and 50 mW versions of a 532 nm laser, which has a wavelength range of ~200-4000 cm-1. Fiber Optic Probe with Accessory CapsThe
R-3000 comes with a fiber optic probe, sample tubes and probe
"caps" -- accessories that provide easy transferability between
samples (solids, tablets, powders and the like) in transparent containers. The probe head containing the optics is
coupled to the spectrometer and laser via two fibers (200 µm and 100 µm
in diameter). The standard fiber
length is 1 meter; however, various fiber lengths are available, from 1
meter-200 meters, which allow the user the flexibility of keeping the
spectrometer close to the sample or at a distance.
Fibers are protected with either PVC monocoil or stainless steel
sheathing. The stainless steel sampling tube is 3.5 inches long and 1/2 inch in diameter. Other tube lengths are available and can be up to 10 inches long; the tubes are easily interchangeable for different applications. There are two focusing caps: one focuses the laser beam on solid samples as the cap is pressed against the sample while the other focuses the laser on the inside of transparent containers containing powders, liquids or gels when the cap is pressed against the outside wall of the container. Additionally, there is a cap for the instrument's calibration; this is a pre-loaded spectroscopic standard that allows for quick, software-controlled instrument calibration and verification. For corrosive environments, custom-built tubes and caps can be made from Hastelloy-C. The tube and caps will normally withstand up to 1500 psi and up to 200 ºC; however, they can be made to withstand up to 3000 psi and up to 500 ºC. Please note that the standard provided probe head and fiber cable will withstand only up to 80 ºC. Immersion probes can also be ordered as custom items; detailed application parameters are needed to design and quote these probes. For added eye safety, the probe contains a software-controlled shutter that is normally closed and opens only when a measurement is being taken. The shutter allows dark scans to be taken without turning the laser on and off. Probe Available for Individual Sale
When used with a modular Raman system (not the R3000), adjustment of the laser power may be necessary since there is about a 50% attenuation when the laser hits the sample. For some applications, this is too much laser power, resulting in degradation of the analyte's chemistry, and resulting in bad spectra. The R3000 systems include a calibrated dial for adjusting laser power, and while the RSI-LASER models have a potentiometer for laser adjustment, it is not calibrated. You will need to use a laser power meter such as the one offered by GentecEO to adjust the laser to a safe power level. The RAM-PR-S is available for $4148. Safety AdvisoryThe laser beam emerging from the R-3000 laser output port or from the fiber optic probe is a Class 3b laser. This laser product produces visible and/or invisible laser radiation. It is capable of causing serious eye injury and blindness to anyone who looks directly into the beam or its specular reflections. Laser safety eyewear must be worn at all times while operating the R-3000. Ordering InformationSystems
Accessories
Operating Software Options
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Contact an Ocean Optics Applications Scientist
LaserShield Laser Safety Glasses
Article on Low-resolution Raman Spectroscopy
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