InPhotote1064TM Portable Raman System LR version
Description
When detecting Raman scattering, the sample's fluorescence can be a large non-Raman signal source. Since the fluorescence signal is also shifted from the laser frequency, it can be difficult to filter it out. Fortunately, fluorescence can be reduced by using a longer wavelength laser as the excitation source. 785nm laser has been the main excitation source for Raman spectroscopy, because it produces relatively low fluorescence and the photodector array is widely available in this wavelength range. Recently, the InGaAs photodector array has been commercialized which extends the range of wavelength detection to 1-2mm. Coupling the InGaAS photodetector with a 1064nm laser excitation source reduces interference from fluorescence. The following shows the Raman spectrum of motor oil with 785 and 1064 nm laser respectively.
InPhotote1064TM Portable Raman System LR version
Specifications |
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|---|---|
| Excitation Wavelength: | 1064 nm |
| Raman Shift Range: | 1800-1000cm^-1 |
| Spectral Resolution: | 14 cm^-1 |
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Frequently Asked Questions
The optical components of the InPhotote1064TM Portable Raman System are shock-mounted in a rugged, water-resistant case with outer dimensions of 21" x 12" x 8" (533 x 305 x 203 mm) and a weight of 29 lbs. (13 kg). The spectrometer can be operated at temperatures up to 30°C.
The SR version has a spectral range of 250-1000 cm-1 and a spectral resolution of 6-8 cm-1 (FWHM), while the LR version has a spectral range of 250-1800 cm-1 and a spectral resolution of 10-14 cm-1 (FWHM).
The InPhotote1064TM Portable Raman System LR version is a portable Raman system that uses a 1064nm laser excitation source to reduce interference from fluorescence when detecting Raman scattering.
The InPhotote1064TM Portable Raman System uses a Standard RamanProbeTM fiber optic sampling probe with a 5 m cable length, which can be used to measure unknowns through transparent containers (glass, plastic). Probe extension cables (up to 200 m) and an immersible probe capable of withstanding chemical decontamination are also available.
The InPhotote1064TM Portable Raman System comes with InPhotote acquisition software and GRAMS/32® manipulation software operating under Windows XP on an ultra-light notebook computer. Optional software includes chemical identification software, quantitative analysis software, and a Forensic Raman Spectral Library of 243 materials.