| 摘要 |
The present invention provides an apparatus for measurement of Raman scattered radiation. The apparatus comprises one, or more than one source of electromagnetic radiation (101) for producing an electromagnetic radiation beam characterized by a narrow spectral width, an integrating cavity (103) having an interior and an exterior, wherein a sample (104) is placed in said interior. The integrating cavity (103) further having one, or more than one port (1032) for insertion of the sample (104) in the interior and for transmission of the electromagnetic radiation into (1031) and out (1033) from the interior, the one, or more than one port (1031, 1032, 1033) extending from the exterior to said interior of said integrating cavity (103). The integrating cavity (103) also comprises a first optical element (102) for transmitting the electromagnetic radiation into the interior of the integrating cavity (103) through the one, or more than one port (1031), and a second optical element (106) for collecting Raman scattered electromagnetic radiation from the sample (104) through the one, or more than one port (1033). The apparatus also comprises a spectrum analyzer (107) for determining a spectral composition of the Raman scattered electromagnetic radiation, a detector (108) for measuring the Raman scattered electromagnetic radiation; and a system (190, 110, 111, 112, 113) for determining the concentration of one, or more than one chemical compound from the measured Raman scattered electromagnetic radiation. The apparatus may also comprise a radiation expanding element (102). A method for measuring the concentration of one, or more than one chemical compound in a sample using Raman scattering is also provided.
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