Brief introduction
Or ultraviolet resonance Raman resonance spectroscopy system is mainly composed of :
1, the laser part : UV or visible light laser, ultraviolet tunable narrow- linewidth laser.
2 spectrometer components: triple monochromator + high sensitivity scientific grade CCD.
3 , signal acquisition components: high efficiency spectral acquisition components.

Features
1.suitable ultraviolet laser excitation can completely avoid the interference of the background fluorescence .
2.Because the Raman signal intensity is proportional to the fourth power of the excitation laser frequency , the higher the UV laser excitation Raman signal efficiency . ( The same power 266nm laser can stimulate 16 times higher than the 532nm laser Raman signal ) .
3.resonance Raman resonance can provide high enhancement factor ( the theoretical limit of up to 106 times ) so greatly enhance the detection limit.

4.selective excitation can be achieved when we put the laser is tuned to excite a substance on the peak , you can only achieve this resonance enhancement upgrade several orders of magnitude signal strength specific substance , since almost no other substances resonance enhanced to further improve the signal to noise ratio , which is for catalytic and biological research is very favorable.
5.As a result of Rayleigh scattering triple monochromator was filtered off , rather than the notch filter , test apparatus can be as low as several wavenumber Raman spectra .

Technical Specifications

1. Laser section
325nm HeCd laser : 325nm; TEM00 mode; laser power 30mW-50mW output options
244nm octave tunable argon ion laser : 244nm; TEM00 mode; laser power 24mW; otherwise 229,238,248,250,257,264nm output lines
532nm DPSS green lasers : TEM00 mode, the laser power 20-100mW options
narrow linewidth tunable titanium sapphire laser

2. spectrometer section
A. Spectrometer:
spectrometer focal length : 500mm; f / 6.5
raster size : 68mm × 68mm or 68mm × 84mm
scanning minimum step : better than 0.005nm
Lens reflectance : ultraviolet and visible region of the mirror reflectivity of 90%

B. Raman spectra collected subtraction mode
Resolution : 4.0 cm-1 ( ultraviolet region ), 3.0 cm-1 ( visible area )
wave number range : 50-4000 cm-1 ( ultraviolet ), 25-4000 cm-1 ( visible region )
C. spectroscopy probe
CCD or EMCCD spectroscopy CCD spectroscopy CCD spectroscopy EMCCD pixel count 1024 × 2562048 × 5121600 × 400 pixel size um26 × 2613.5 × 13.516 × 16 image area mm26.6 × 6.727.6 × 6.925.6 × 6.4 lowest temperature oC-100-100 -100 electronic gain NANA1-1000

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