Resonance Raman Spectroscopy
One of the central problems in Raman spectroscopy is when a substance absorbs laser beam energy and generates a strong fluorescence. This is especially prevalent with colored samples. However, when the laser frequency is close to the frequency of the electronic excited states, it resonates with them, causing a resonance Raman signal.
Although not all of the bands of the spontaneous Raman spectrum are enhanced, those that are become enhanced by 3-5 orders of magnitude. The molecules responsible for coloration experience the highest level of enhancement as the chromophoric group normally has the highest level of light absorption.
The highest intensity of resonance Raman signal is obtained when the laser frequency equals the first of the second electronic excited state – therefore tunable lasers are the most appropriate choice.
Recommended Products for Resonance Raman Spectroscopy
Spectrometers
IsoPlane
Multi-Award Winning Imaging Spectrometer
- Patented astigmatism free Schmidt-Czerny-Turner design
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TriVista
High-Resolution Triple Spectrometers
- Wavelength tunable Raman Spectroscopy
- Measure smallest energy shifts from laser lines
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ProEM
Ultralow Light Detection Camera
- Deep cooling
- ≥95% quantum efficiency
- eXcelon 3 technology
PyLoN
Extremely Low Noise Liquid Nitrogen Cooled Cameras
- -120 °C cryogenic cooling
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BLAZE
Award Winning Cameras for Spectroscopy
- Up to 300% higher NIR sensitivity
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