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HG-1 Mercury Argon Calibration Source
With the HG-1 and an Ocean Optics spectrometer, users can perform wavelength calibration with a spreadsheet program such as Microsoft Excel or a calculator that performs linear regressions. For technical assistance in performing the latter option, click on Calibrating the Wavelength of Your Spectrometer. The HG-1 features an SMA 905 Connector to couple to Ocean Optics spectrometers and fiber optic accessories, including optical fibers. The HG-1 operates with a 12 VDC power supply (included with the unit) or 9V battery (not included). User's TipOcean Optics spectrometers are carefully calibrated as part of the company's standard quality assurance process. However, as is the case with all spectrometers, wavelength will drift slightly due to time and environmental conditions. If wavelength accuracy is an important part of your work, consider including calibration spectra with every experiment. Specifications
User's Tip: Ocean Optics recommends using the HG-1 with a 50 µm-diameter or smaller optical fiber or entrance slit. The use of fibers and slits >50 µm in diameter will result in optical resolution (full width, half maximum) that adversely affects wavelength calibration. Also, keep in mind that if the spectrometer has no slit and your experiment involves using optical fibers of different diameters, wavelength re-calibration will be required. That's because optical resolution will vary according to the diameter of the fiber in use -- i.e., a 50 µm fiber will resolve differently than a 100 µm fiber, and so on. Recalibration is also recommended every time that you unscrew the fiber from the SMA 905 Connector on the spectrometer. Spectral Output
Strong Hg Emission Lines by Wavelength (nm)User's Tip: There are more emission lines published here than printed on the label on the HG-1 housing. The label is intended as a quick, convenient reference and does not list every Ar or Hg emission line that exists.
* This spectral line will not be evident with spectrometers configured with 300- or 600-lines/mm gratings. ** With spectrometers that have 1200-, 1800-, 2400- or 3600-lines/mm gratings, spectral lines will be evident at 576.96 nm and 579.07 nm. Strong Ar Emission Lines by Wavelength (nm)
* This spectral line will be evident only with spectrometers configured with 1800-, 2400-, or 3600-lines/mm gratings. Cuvette Wavelength Calibration Adapter
ReferencesWavelengths
of Spectral Lines in Mercury Pencil Lamps Irradiances
of Spectral Lines in Mercury Pencil Lamps Per
Reader, et al, Wavelengths and Transition
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CAL-2000 Mercury Argon Calibration Standard
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