A Wavelength Programmed Luminescence Spectrometer

Haver, T. C. O'; Green, G. L.; Keppler, B. R.

doi:10.1080/10739147208543349

Cited by 13 publications

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“…Wavelength-modulated instruments for molecular absorption have been employed only for derivative spectroscopy where the modulation amplitude need not be large, typically about 1 nm. The following methods of direct wavelength modulation have been employed primarily for derivative spectroscopy: (i) rotating the entrance mirror (23); (ii) vibrating the exit mirror (24); (iii) vibrating the Littrow mirror of a Littrow monochromator (25); (iv) "wobbling" (vibrating) the exit slit (26); (v) using a dual exit slit (27, 28); (vi) rotationally oscillating a quartz plate in the optical path (29-32); (vii) moving a refractor plate in and out of the beam at an angle (33); (viii) slewing the grating drive motor between two positions (34); and (ix) rotating an interference filter (35).…”

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Computer-controlled dual wavelength spectrophotometer

Ratzlaff¹,

Chuang²,

Natusch³

et al. 1978

Anal. Chem.

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that device, while use of a reference channel monitoring the dye laser fluctuations would further improve system performance. With these modifications to our apparatus, measurement of induced absorption of 10"' or less is very feasible. Under these conditions, the detection limits of ac-coupled inverse Raman spectrometry should be equal to or better than those obtainable by spontaneous Raman spectrometry. ACKNOWLEDGMENTThe authors thank Nestor Clough, Lexel Corporation, for the loan of the argon ion laser used in these experiments. LITERATURE CITED(1) P.

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confidence: 99%