Image:Helium neon laser spectrum.png

From Wikipedia, the free encyclopedia

Image
File history
File links

Size of this preview: 800 × 544 pixels
Full resolution‎ (2,748 × 1,870 pixels, file size: 104 KB, MIME type: image/png)

[edit] Summary

Spectrum of a 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 Brillouin scattered HeNe laser can be seen here [2] for reference. Spectrum taken by me.

[edit] Licensing

I, the creator of this work, hereby grant the permission 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. Subject to disclaimers.

This graph image was uploaded in a raster image format such as PNG, GIF, or JPEG. However, it contains information that could be stored more efficiently and/or accurately in the SVG format, as a vector graphic.
If possible, please upload an SVG version of this image. After doing so, please replace all instances of the previous version throughout Wikipedia (noted under the “File links” header), tag the old version with {{Vector version available|NewImage.svg}}, and remove this tag. For more information, see Wikipedia:Preparing images for upload. For assistance with converting to SVG, please see the Graphics Lab.

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	09:05, 22 August 2006	2,748×1,870 (104 KB)	Deglr6328 (Talk \| contribs)	(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. )