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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
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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.

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Date/TimeThumbnailDimensionsUserComment
current22:05, 2 October 2016Thumbnail for version as of 22:05, 2 October 20162,641 × 1,751 (30 KB)CmdrjamesonCompressed with pngout. Reduced by 53kB (63% decrease).
09:52, 16 August 2008Thumbnail for version as of 09:52, 16 August 20082,641 × 1,751 (84 KB)Papa Novemberrm opaque bg and cropped using GIMP.
09:47, 16 August 2008Thumbnail for version as of 09:47, 16 August 20082,748 × 1,870 (104 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|Spectrum of a en:Helium neon laser taken using an Ocean Optics HR2000 spectrometer [http://www.oceanoptics.com/] by bouncing the laser off of a white benchtop and guiding the diffuse

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