Features

Spectrometer - Optimized for Raman Spectroscopy

Standard spectrometer configurations are for 532nm and 785nm laser excitation wavelengths with custom excitation wavelengths also available. We offer a variety of spectrometer configurations specially designed for wide spectral range and high resolution. Spectral ranges are available from as low as 65cm-1 (filter dependent) to as high as 4000cm-1, with a spectral resolution as fine as 3.0cm-1 *
* Resolution cm-1 measured using pen lamp

Detector - Cooled Detector for Low-Light Level Detection

Two detector types are used in our Raman spectrometer: front illuminated and back-thinned CCD. All detectors have a built-in thermoelectric cooler (TEC) which reduces dark current and noise to enhance the dynamic range and detection limit. TE Cooling temperature settings range from 14°C for front illuminated CCDs and -20°C for back-thinned CCDs.

Laser - Creating Raman Scatter

In Raman spectroscopy, it is essential to utilize a clean, narrow bandwidth laser: the quality of the Raman peaks are directly affected by the sharpness and stability of the excitation light source. Our Raman systems are available with a choice of a 532nm or 785nm excitation laser. Multimode lasers deliver a linewidth of < 0.3nm while single mode lasers deliver a linewidth of < 0.03nm at full power. B&W Tek, Inc.'s 785nm lasers feature our patented CleanLaze® technology, which avoids the phenomenon known as "mode hopping." This ensures precise and repeatable center wavelength. Our software features laser output power control from 0 - 100% for multimode lasers and 0%, 10%, and 100% for single mode lasers. Single mode lasers based units also feature manual laser power adjustment via neutral density filters at 100%, 79%, 50%, 25%, and 10%. Power adjustment helps prevent laser exposure damage to the sample and allows the user to maximize the signal-to-noise ratio and minimize measurement integration time.
Laser lifetime of 10,000 hours ensures quality data for years to come!

Filter - 65cm-1 or 175cm-1 to the Rayleigh Line Cut-On

A laser line filter removes all side bands before exciting the sample, ensuring a narrow band excitation is delivered. The light collected from the sample is then filtered through a notch filter. Finally, an ultra-steep long pass filter removes the reflected laser line to allow accurate measurement of Raman peaks as close as 65cm-1, 100cm-1, or 175cm-1 to the Rayleigh line (which is determined by the grade of the filter). All of our fiber optic probes can be upgraded with an E-grade filter, enabling measurement of Raman peaks as close as 65cm-1 to the Rayleigh line.

Probe - Easy Transition Between Sample Types

Our probes facilitate the measurement of gases, liquids, gels, slurries, powders, or solids under both lab and demanding environmental conditions. Constructed with state-of-the-art telecom packaging techniques, the probe has a flexible fiber coupling encased in a durable protective jacketing material. It delivers Rayleigh scatter rejection as high as 10 photons per billion within 65cm-1 or 175cm-1 to the Rayleigh Line, which is determined by the filter used in the probe. All probes are available for either 532nm or 785nm excitation wavelengths; custom probes are available.

Integrated Computer - State-of-the-Art Touch Screen

Some Raman systems include an integrated touch screen computer, eliminating the need for a separate laptop or desktop. The touchscreen feature is ideal for applications requiring portability. The embedded computer offers video output capabilities and USB ports, allowing the use of a larger monitor or USB device for a desktop computer feel.

Portability - Small Footprint and Lightweight

A lightweight design provides the convenience of portability and in-the-fieldtesting for most Raman applications. Most systems weigh less than 10 pounds, with the smallest weighing less than 5 pounds. Our goal is to provide the highest performance compact Raman systems on the market.