The Raman R-3000 can be used for applications such as pharmaceutical monitoring and quality control, chemical and petrochemical process and quality control, drug and explosives detection, and water-quality analysis.

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Features

• Integrated System. All-in-one system includes diode laser, CCD-array spectrometer, fiber optic probe and operating software
• Improved Design. Third-generation instrument delivers gains in laser resolution (better than 10 cm-1, compared with 15 cm-1 with the R-2001) and stability (better than 1 cm-1 wavelength stability and 4% output stability)
• Probe Flexibility. Fiber optic probe comes with accessory "caps" for simple calibration and focusing
• Software Improvements. New software features include fingerprinting and quantification capabilities

Fully Integrated System

The 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.

New software features include fingerprinting and quantification capabilities (matching spectra to those stored in a database and determining the concentrations of constituents from models/cal-sets), integration times may be increased to several minutes, and a multiple -spectrum display function (overlays of up to 20 spectra are possible).

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 Caps

The 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

This probe (RAM-PR-S) is also available individually for those who are configuring their own Raman system using the RSI-LASER-532 or RSI-LASER-785 along with an Ocean Optics spectrometer. The standard fiber length is 1 meter, but longer fibers (up to 5 meters) are available at no extra cost. The working distance (the focal length of the lens at the end of the tube, before attachment of the caps) of the probe is 4.5 mm, with 1 mm to 22 mm available (specify at time of purchase). Two focusing caps are included, an S cap for solid surface measurements and an L cap for measurement of liquids through vials.

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.

Safety Advisory

The 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.

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