File:Helium neon laser spectrum.png
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Size of this preview: 800 × 530 pixels. Other resolutions: 320 × 212 pixels | 640 × 424 pixels | 1,024 × 679 pixels | 1,280 × 849 pixels | 2,641 × 1,751 pixels.
Original file (2,641 × 1,751 pixels, file size: 30 KB, MIME type: image/png)
| Description |
English: Spectrum of a en:Helium neon laser taken using an Ocean Optics HR2000 spectrometer [1] by bouncing the laser off of a white benchtop and guiding the diffuse reflected light directly into the spectrometer. The emission spectrum of the HeNe laser is even more monochromatic than seen here (it is typically around a mere 2 picometers in bandwidth) and the broadening of the peak in this spectrum is actually a result of the imperfect optics and scattering of light inside the spectrometer which results in some light being detected on the parts of the (linear CCD) sensor which surround the central peak. A very high resolution spectrum of a en:Brillouin scattered HeNe laser can be seen here [2] for reference. Spectrum taken by me. |
| Date | 22 August 2006 (original upload date) |
| Source | Transferred from en.wikipedia to Commons by Papa November using CommonsHelper. |
| Author | Deglr6328 at English Wikipedia |
| Other versions | Derivative works of this file: Helium neon laser spectrum.svg |
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Licensing
Deglr6328 at the English-language Wikipedia, the copyright holder of this work, hereby publishes it under the following license:
  
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. Subject to disclaimers. | |
| Attribution: Deglr6328 at the English-language Wikipedia | ||
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| This licensing tag was added to this file as part of the GFDL licensing update. |
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. Subject to disclaimers. |
Original upload log
The original description page was here. All following user names refer to en.wikipedia.
- 2006-08-22 09:05 Deglr6328 2748×1870×??? (106503 bytes) Spectrum of a [[Helium neon laser]] taken using an Ocean Optics HR4000 spectrometer [http://www.oceanoptics.com/] by bouncing diffuse light from the laser off of a white benchtop directly into the spectrometer. Spectrum taken by me.
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:05, 2 October 2016 | | 2,641 × 1,751 (30 KB) | wikimediacommons>Cmdrjameson | Compressed with pngout. Reduced by 53kB (63% decrease). |
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