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Optimization of the signal-to-noise ratio for photoreflectance spectroscopy
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| Zeitschriftentitel: | Journal of Applied Physics |
|---|---|
| Personen und Körperschaften: | , , , |
| In: | Journal of Applied Physics, 90, 2001, 10, S. 5081-5085 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
AIP Publishing
|
| Schlagwörter: |
| author_facet |
Behn, U. Thamm, A. Brandt, O. Grahn, H. T. Behn, U. Thamm, A. Brandt, O. Grahn, H. T. |
|---|---|
| author |
Behn, U. Thamm, A. Brandt, O. Grahn, H. T. |
| spellingShingle |
Behn, U. Thamm, A. Brandt, O. Grahn, H. T. Journal of Applied Physics Optimization of the signal-to-noise ratio for photoreflectance spectroscopy General Physics and Astronomy |
| author_sort |
behn, u. |
| spelling |
Behn, U. Thamm, A. Brandt, O. Grahn, H. T. 0021-8979 1089-7550 AIP Publishing General Physics and Astronomy http://dx.doi.org/10.1063/1.1412828 <jats:p>The amplitude and the signal-to-noise ratio of photoreflectance (PR) spectra are experimentally and theoretically investigated as a function of the pump and probe intensity. The model calculations of the PR amplitude and the signal-to-noise ratio based on a simple transport model taking the shot noise of the photodetector as the only noise source confirm the experimentally observed dependencies. Increasing the probe light intensity leads to a decrease of the absolute PR background noise. At the same time, the PR amplitude decreases. This may, in particular for comparable probe and pump intensities, result in a decrease of the signal-to-noise ratio.</jats:p> Optimization of the signal-to-noise ratio for photoreflectance spectroscopy Journal of Applied Physics |
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AIP Publishing, 2001 |
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2001 |
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Journal of Applied Physics |
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| title |
Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_unstemmed |
Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_full |
Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_fullStr |
Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_full_unstemmed |
Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_short |
Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_sort |
optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| topic |
General Physics and Astronomy |
| url |
http://dx.doi.org/10.1063/1.1412828 |
| publishDate |
2001 |
| physical |
5081-5085 |
| description |
<jats:p>The amplitude and the signal-to-noise ratio of photoreflectance (PR) spectra are experimentally and theoretically investigated as a function of the pump and probe intensity. The model calculations of the PR amplitude and the signal-to-noise ratio based on a simple transport model taking the shot noise of the photodetector as the only noise source confirm the experimentally observed dependencies. Increasing the probe light intensity leads to a decrease of the absolute PR background noise. At the same time, the PR amplitude decreases. This may, in particular for comparable probe and pump intensities, result in a decrease of the signal-to-noise ratio.</jats:p> |
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| author | Behn, U., Thamm, A., Brandt, O., Grahn, H. T. |
| author_facet | Behn, U., Thamm, A., Brandt, O., Grahn, H. T., Behn, U., Thamm, A., Brandt, O., Grahn, H. T. |
| author_sort | behn, u. |
| container_issue | 10 |
| container_start_page | 5081 |
| container_title | Journal of Applied Physics |
| container_volume | 90 |
| description | <jats:p>The amplitude and the signal-to-noise ratio of photoreflectance (PR) spectra are experimentally and theoretically investigated as a function of the pump and probe intensity. The model calculations of the PR amplitude and the signal-to-noise ratio based on a simple transport model taking the shot noise of the photodetector as the only noise source confirm the experimentally observed dependencies. Increasing the probe light intensity leads to a decrease of the absolute PR background noise. At the same time, the PR amplitude decreases. This may, in particular for comparable probe and pump intensities, result in a decrease of the signal-to-noise ratio.</jats:p> |
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| id | ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTA2My8xLjE0MTI4Mjg |
| imprint | AIP Publishing, 2001 |
| imprint_str_mv | AIP Publishing, 2001 |
| institution | DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-D161, DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14 |
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| series | Journal of Applied Physics |
| source_id | 49 |
| spelling | Behn, U. Thamm, A. Brandt, O. Grahn, H. T. 0021-8979 1089-7550 AIP Publishing General Physics and Astronomy http://dx.doi.org/10.1063/1.1412828 <jats:p>The amplitude and the signal-to-noise ratio of photoreflectance (PR) spectra are experimentally and theoretically investigated as a function of the pump and probe intensity. The model calculations of the PR amplitude and the signal-to-noise ratio based on a simple transport model taking the shot noise of the photodetector as the only noise source confirm the experimentally observed dependencies. Increasing the probe light intensity leads to a decrease of the absolute PR background noise. At the same time, the PR amplitude decreases. This may, in particular for comparable probe and pump intensities, result in a decrease of the signal-to-noise ratio.</jats:p> Optimization of the signal-to-noise ratio for photoreflectance spectroscopy Journal of Applied Physics |
| spellingShingle | Behn, U., Thamm, A., Brandt, O., Grahn, H. T., Journal of Applied Physics, Optimization of the signal-to-noise ratio for photoreflectance spectroscopy, General Physics and Astronomy |
| title | Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_full | Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_fullStr | Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_full_unstemmed | Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_short | Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_sort | optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| title_unstemmed | Optimization of the signal-to-noise ratio for photoreflectance spectroscopy |
| topic | General Physics and Astronomy |
| url | http://dx.doi.org/10.1063/1.1412828 |