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Optical Instruments » LR-3 Laser Raman Spectrometer

Introduction

LR-3 Laser Raman Spectrometer is used for Raman spectrum and fluorescence measurements in physics and chemistry labs of research institutes, universities and colleges. It is an important analytical and research tool and offers a powerful non-destructive method of sample analysis.

Specifications

Wavelength Range 300~800 nm
Wavelength Accuracy ≤0.4 nm
Wavelength Repeatability ≤0.2 nm
Stray Light ≤10-3
Reciprocal of Linear Dispersion 2.7 mm
Half-width of Spectral Line ≤0.2 nm at 586 nm

Features
  • Computer interfaced, automatic recording
  • High resolution and low stray light
  • Single-photon counter detector with high sensitivity and low noise
  • High stable external optical path
  • Various accessories for analysis of liquid and solidsamples
  • Adoption of notch filter
Graphs

Figure 1: Raman spectrum of CCl4 with notch
filter used
Figure 2:
Raman spectrum of natural diamond
  Specifications of the Components

Monochromator
Relative Aperture D/F=1/5.5
Optical Grating 1200 lines/mm, blazed wavelength at 500 nm
Slit Width 0~2 mm, continuously adjustable
Indication Accuracy 0.01mm
Receiver Unit
Photomultiplier R6249
Electrical Source 0~1500V
Broadband Amplifier
Bandwidth >100MHz
Notch Filter (optional)
Wavelength 532 nm
Bandwidth <10 nm
Single-photon Counter
Integration Time 0~30 min
Max Count 107
Threshold Voltage 0~2.6V, 1~256 Block (10mV/Block)
Diode Pumped Laser
Wavelength 532 nm
Output Power ≥50 mW
Stability ≤2%
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