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Spectrometer light-source stabilization

Investigations of H JnSc and H. GaSe crystals absorption spectra were carried out at T = 80A" using the Am spectrometer with 600 grid/mm diffraction grating and resolution not worse than 0.5 meV. As a light source, we used incandesent filament lamp supplied from the stabilized direct current unit. [Pg.330]

Figure 9.14. Brillouin spectrometer using fibre optics to increase the signal-to-noise ratio. (1) Light source consisting of a master laser (1a) a slave with matched frequency (1b) and control unit (1c) for sensitive stabilization of the difference frequency Sv. (2) Signal splitter. (3) Fibre coupler. (4) Polarizer. (5) Chopper. (6) Lens. (7) Cuvette placed on a goniometer. (8) Termination. (9) Slit. (10) Broad-band (10 GHz) APD. (11) Photodiode with a smaller bandwidth (1 GHz). (12) Spectrum analyser (10 GHz) for controlling the intermediate frequency Sv. (13) Spectrum analyser (1 GHz) for the measurement of the half-power bandwidth, Av, of the Brillouin peak. (14) Amplifier system. (15) Process control computer. (Reproduced with permission of Elsevier, Ref [96].)... Figure 9.14. Brillouin spectrometer using fibre optics to increase the signal-to-noise ratio. (1) Light source consisting of a master laser (1a) a slave with matched frequency (1b) and control unit (1c) for sensitive stabilization of the difference frequency Sv. (2) Signal splitter. (3) Fibre coupler. (4) Polarizer. (5) Chopper. (6) Lens. (7) Cuvette placed on a goniometer. (8) Termination. (9) Slit. (10) Broad-band (10 GHz) APD. (11) Photodiode with a smaller bandwidth (1 GHz). (12) Spectrum analyser (10 GHz) for controlling the intermediate frequency Sv. (13) Spectrum analyser (1 GHz) for the measurement of the half-power bandwidth, Av, of the Brillouin peak. (14) Amplifier system. (15) Process control computer. (Reproduced with permission of Elsevier, Ref [96].)...
In double-beam spectrometers, fewer problems of stability of the light source and the electronics... [Pg.431]

See other pages where Spectrometer light-source stabilization is mentioned: [Pg.30]    [Pg.257]    [Pg.4]    [Pg.96]    [Pg.134]    [Pg.203]    [Pg.245]    [Pg.141]    [Pg.195]    [Pg.15]    [Pg.167]    [Pg.89]    [Pg.57]    [Pg.431]    [Pg.34]    [Pg.327]    [Pg.208]    [Pg.244]    [Pg.115]    [Pg.358]    [Pg.218]    [Pg.512]   
See also in sourсe #XX -- [ Pg.550 ]



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