Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Reexamination Certificate
2008-01-15
2008-01-15
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
Reexamination Certificate
active
10416566
ABSTRACT:
A method for the wavelength calibration of echelle spectra, in which the wavelengths are distributed across number of orders is characterised by the steps: recording of a line-rich reference spectrum with known wavelengths for a number of the lines, determination of the position of a number of peaks of the reference spectrum in the recorded spectrum, selection of at least two first lines of known order, position and wavelength, determination of a wavelength scale for the order in which the known lines lie, by means of a fit function γm(x), determination of a provisional wavelength scale γ?m 1(x) for at least one neighboring order m 1, by means of addition/subtraction of a wavelength difference γFSRwhich corresponds to a free spectral region, according to γm 1 ?(x)=γm(x)γFSRwith γFSR=γm(x)/m, determination of the wavelengths of lines in said neighboring order m 1, by means of the provisional wavelength scale γ 1(x), replacement of the provisional wavelength of at least two lines by the reference wavelength for said lines as obtained in step (a) and repeat of steps (d) to (g) for at least one further neighboring order.
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Becker-Ross Helmut
Florek Stefan
Okruss Michael
Creighton Wray James
Gesellschaft zur Förderung angewandter Optik, Optoelektroni
Gesellschaft zur Förderung der Analytischen Wissenschaften
Hyra Clifford D.
Skovholt Jonathan
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