11. Image Credits
2. Laser
Helium-Neon laser in operation ...
Photograph
Photograph
Sven Bohnstedt, University of Oldenburg, Germany
Helium-Neon laser in operation ..., graphic.
Photograph & graphic
Photograph & graphic
Sven Bohnstedt & Rainer Reuter, University of Oldenburg, Germany
Laser light (left) and halogen lamp's light (right) ...
Photograph
Photograph
Sven Bohnstedt, University of Oldenburg, Germany
Spectra of laser light (red) and halogen light (blue) ...
Graphic
Graphic
Sven Bohnstedt & Rainer Reuter, University of Oldenburg, Germany
Explanation of the speckle pattern
Graphic
Graphic
Sven Bohnstedt, University of Oldenburg, Germany
Light in the glass tube and laser light (tiny spot on the right)
Photography
Photography
Sven Bohnstedt, University of Oldenburg, Germany
Spectra of the gas discharge (orange) and the laser beam (red)
Graphic
Graphic
Sven Bohnstedt, University of Oldenburg, Germany
Interaction of a photon with two energy levels of an atom ...
Graphic
Graphic
Rainer Reuter, University of Oldenburg, Germany
Boltzmann distribution of the HeNe laser energy levels 633nm)
Graphic
Graphic
Sven Bohnstedt, University of Oldenburg, Germany
Simplified energy level scheme of the HeNe laser ...
Graphic
Graphic
Sven Bohnstedt, University of Oldenburg, Germany
Left: HeNe laser and the spot of its beam on a screen, and the hand-held glass plate used for the experiment ...
Photograph, Video
Photograph, Video
Sven Bohnstedt, University of Oldenburg, Germany
Left: The HeNe laser and its beam expanded with a lens ...
Photograph, Video
Photograph, Video
Sven Bohnstedt, University of Oldenburg, Germany
Brewster window of the HeNe laser, indicated by arrows, at one end of the discharge tube ...
Photograph
Photograph
Sven Bohnstedt & Rainer Reuter, University of Oldenburg, Germany
