Laser Raman Spectrometers

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Laser Raman Spectrometers NRS-3000 Series Part
I.
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Integrated Raman System
Laser Raman Spectrometers NRS-3000 Series
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• Topics
• Introduction of NRS-3000 Family
• Features
• Specifications
• Introduction of system
• Key hardware
• Laser
• Sample compartment
• Sample viewing system
• Monochromator
• Detector
• Why micro-Raman?
• Optional items
• Spectra Manager II
• Optional software
• Applications

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NRS-3100 Standard model Wavenumber range 50 -
8000 cm-1 Resolution 1 cm-1 Laser Sources
Visible - NIR NRS-3200 Multi-configuration
model Wavenumber range 50 - 8000
cm-1 Resolution 1 cm-1 Laser Sources UV -
NIR NRS-3300 Advanced applications
model Wavenumber range 50 - 8000 cm-1 (10
-8000 cm-1 optional) Resolution 1 cm-1 Laser
Sources UV - NIR
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NRS-3000 Key Features

• High quality on-screen sample view and image
  capture
• Trinocular (binoculars camera port) option for
  the confocal microscope
• Software controlled dichroic mirrors and beam
  splitter
• Spectral range from deep UV through NIR
• 10 cm-1 to 8000 cm-1 measurement range option
• One to three holographic gratings on automated
  turret
• Fully kinematic eight position Rayleigh rejection
  filter wheel
• Fiber optic remote for in-situ measurement
• Direct Raman imaging system option
• 0.4 cm-1 high spectral resolution option
• Up to two internal solid state lasers
• Auto alignment of laser optical path
• Motorized sample chamber door providing open
  microscope access
• Class 1 laser safety with full laser interlocks
• Software switched optics for up to six separate
  laser sources

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Improved performance

• Higher spectrograph throughput, particularly at
  NIR wavelengths
• Greater laser throughput to sample allowing lower
  laser powers
• USB interface for data system instrument control
• Direct-drive monochromator
• Instrument control and data processing with
  Spectra Manager II or Spectra Manager CFR, a 21
  CFR part 11 compliant software

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NRS-3000 Ventuno Spectrograph drive Direct
drive Cosecant bar Grating 3
2 Laser 6 2 Laser alignment Auto
alignment Manual Spectral search Standard Option

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Specifications
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Polarized Raman Measurement 1/2 wave plate
accessory For rotating the excitation
polarization
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Key Hardware
When selecting a Raman spectrometer, there are
many different combinations of hardware which
require consideration. The four main criteria
are 1. Excitation laser wavelength, power,
cost, maintenance 2. Spectrograph resolution,
wavelength range 3. CCD detector range, spectral
response 4. Sampling hardware micro, macro,
mapping, remote (If the application calls for
FT-Raman, usually only a NIR laser of 1064 nm is
used and the spectrograph is based on an FT-IR
system)
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Laser Specifications Wavenumber 532 nm Laser
output Single line output 100 mW (532
nm) Oscillation mode Single mode, TEM00 Output
stability Less than ? 2 Beam diameter Approx.
0.3 mm Beam broadening angle Not more than 2.7
mrad Plane of polarization 45? Beam
attenuator Automatic attenuator (OD 1 - 6,
OD 0.3, and OD 0.6)