15 Nov 2006 System Combines the Simplicity of Dispersive Instruments with the Power of a Transform Spectrometer. Dunedin, Fla., November 2006 – A novel Multimodal Multiplex Spectroscopy (MMS) technique for Raman analysis offers research-grade performance at a fraction of the cost of traditional Raman analyzers. At less than $20,000 US, the MMS Raman is ideal for the routine analysis of many types of liquids and solids, in particular for measuring weak, scattering and diffuse sources. Key applications include materials inspection and identification, and quantitative analysis of chemicals and pharmaceuticals.
The MMS Raman System offers these key features:
- Spectral resolution of ~4 cm-1
- Spectral range of 220-2000 cm-1
- Integration times ranging from 50 ms-100 seconds
- Sample holder for cuvettes and test tubes
- Rapid analysis, with no sample preparation
Ocean Optics has teamed with Centice Corporation on the MMS Raman System, which uses Centice's patent-pending Multimodal Multiplex Spectroscopy. In MMS Spectrometers, a dispersive-grating geometry with a wide-area coded aperture takes the place of a traditional spectrometer slit entrance. The grating disperses the light, which is then focused onto the CCD-array detector. But unlike traditional spectrometers designs, where there is an inherent tradeoff between resolution and light throughput, the MMS design allows more light to be collected; in fact, a mathematical transformation algorithm precisely reconstructs the spectrum with a 4x signal-to-noise improvement as compared with a slit-based system equipped with identical source, grating and detector components, and 70-80x greater than with a fiber input of equivalent resolution.
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