David H Haffner SrI re-adjusted my slit width after some experimental spectral scans, using Eosin Y in Ethanol and a reagent I am working on (distilled water {90%} + Methanol {10%}). Here I am determining my "actual" slit width by measuring the spectral bandwidth of the laser line at FWHM.
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Hey Ted Yapo, there really isn't a way to estimate the spread of a particular bandwidth, and with spectroscopy, spectral bandwidth is directly related by physical slit width. Clever way of measuring wire, the laser would always be the most accurate, as long as the laser is stable and it's beam divergence is <1.2
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Hi David, I'm not as well-read on spectroscopy as I should be...do people de-convolve these spectra if they have a good estimate for the spread function?
Oh, and I wonder if you can measure the slit width by single-beam diffraction patterns with your 532nm laser? I used to measure the diameter of scavenged magnet wire this way before I bought a good set of calipers.
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