光谱仪参数入门.pdf

Introduction Fiber Optic Spectroscopy Optical spectroscopy is a technique for measuring light Devices (CCD) Arrays and Photo Diode (PD) Arrays, enabled the intensity in the UV-, VIS-, NIR- and IR-region. Spectroscopic production of low cost scanners, CCD cameras etc. The same measurements are being used in many different applications, CCD and PDA detectors are now used in the Avantes line of such as color measurement, concentration determination of spectrometers, enabling fast scanning of the spectrum, wit- chemical components or electromagnetic radiation analysis. hout the need of a moving grating. For more elaborate application information and setups, Thanks to the need for fiber optics in the communication please see further the Application chapter at the end of this technology, low absorption silica fibers have been developed. catalog. Similar fibers can be used as measurement fibers to transport A spectroscopic instrument generally consists of entrance slit, light from the sample to the optical bench of the spectrome- collimator, a dispersive element, such as a grating or prism, ter. The easy coupling of fibers allows a modular build-up of a focusing optics and detector. In a monochromator system system that consists of light source, sampling accessories and there is normally also an exit slit, and only a narrow portion f