Correction of Gain and Optical Throughput Variations in a Two-Dimensional Imaging Spectrometer

Monnig, Curtis A.; Gebhart, B. D.; Hieftje, Gary M.

doi:10.1366/0003702894202779

Cited by 13 publications

(3 citation statements)

References 4 publications

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“…Emission intensities of the desired spectral lines were obtained by integrating the area under each spectral peak, with background subtraction using pixels surrounding the spectral peak. Furthermore, a flat field correction, that corrects for CCD gain and optical-throughput variations, was applied as described by Monnig et al [39]; a quartz cuvette containing a chemoluminescent liquid (Cyalume® Green Safety Lightstick, Omniglow Corp., West Springfield, MA, USA) with a high emission stability was observed instead of the plasma. A digital image of the uniform-radiation source was acquired.…”

Section: Data Processing and Correction Methodsmentioning

confidence: 99%

Plasma diagnostic on a low-flow plasma for inductively coupled plasma optical emission spectrometry

Engelhard

Chan

Gamez

et al. 2008

Spectrochimica Acta Part B: Atomic Spectroscopy

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Section: Data Processing and Correction Methodsmentioning

confidence: 99%

Plasma diagnostic on a low-flow plasma for inductively coupled plasma optical emission spectrometry

Engelhard

Chan

Gamez

et al. 2008

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…In fact, this relatively minor distortion could be overcome if desired by using a different wavelength isolation system such as an interference filter. The procedure described by Monnig et al was used to perform flat-field correction of all images. Images of copper targets were collected at 324.754 nm and silver target images at 328.068 nm.…”

Section: Methodsmentioning

confidence: 99%

Development of a Pulsed Radio Frequency Glow Discharge for Three-Dimensional Elemental Surface Imaging. 1. Application to Biopolymer Analysis

et al. 2007

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Glow discharge optical emission spectrometry has cemented itself as an important surface elemental analysis technique in part because of its superb depth resolution (on the order of single nanometers). However, very few studies have explored the ability of the glow discharge to provide laterally resolved elemental information. In the present study, an end-on-viewed pulsed radio frequency glow discharge is coupled to a monochromatic imaging spectrometer to provide lateral surface imaging. The performance of the technique is demonstrated with etched copper circuits on fiber-glass substrates, and it is shown how several operating parameters including pressure, pulsed mode operation, and time-resolved detection affect the lateral surface resolution. In addition, because a pulsed radio frequency glow discharge offers elemental information on nonconducting samples, the technique is applied to the three-dimensional elemental analysis of proteins on blotting substrates. Several alternative sample types are also examined, including photographic film and glass.

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“…An image would then be acquired under typical operating conditions and the average of the pixel intensities would be used to normalize such images. 16 The sample images can then be divided by this flat-field image to correct. This type of correction would also take any throughput variations introduced by the collection optics into account.…”

Section: Image Correctionmentioning

confidence: 99%

Push-broom hyperspectral imaging for elemental mapping with glow discharge optical emission spectrometry

Gamez

Frey

Michler

2012

J. Anal. At. Spectrom.

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Glow discharge optical emission spectroscopy (GDOES) has been recognized for allowing direct solid sample elemental analysis with high depth resolution. However, the lateral resolution it affords has been historically restricted to some millimetres or the diameter of the sputtered area. Recently, it was shown that one can obtain laterally resolved information from within the sputtered area by operating the discharge in pulsed power mode. The newly available data dimensions require a new approach to the collection of the GDOES signal with lateral (to recover X and Y positions), spectral (to qualify and quantify elemental information), and temporal resolution (to improve lateral resolution and allow depth profiling). Previous studies have utilized spectral imagers of whisker-broom and staring geometries. In this study we characterize the advantages and disadvantages of using a push-broom geometry hyperspectral imager for GDOES elemental mapping. The results show that the higher light throughput of the push-broom geometry allows faster image acquisition times, compared to other spectral imaging systems with the same components, and thus maintain depth resolutions below 10 nm.

show abstract

Correction of Gain and Optical Throughput Variations in a Two-Dimensional Imaging Spectrometer

Cited by 13 publications

References 4 publications

Plasma diagnostic on a low-flow plasma for inductively coupled plasma optical emission spectrometry

Plasma diagnostic on a low-flow plasma for inductively coupled plasma optical emission spectrometry

Development of a Pulsed Radio Frequency Glow Discharge for Three-Dimensional Elemental Surface Imaging. 1. Application to Biopolymer Analysis

Push-broom hyperspectral imaging for elemental mapping with glow discharge optical emission spectrometry

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