Laser materials, neodymium doped
Four different laser 'glasses': actually two glasses and two crystals. Transmission spectra and images. Note that the images are taken on a light-box driven by white Hg fluorescent tubes and this influences the apparent colour of the material.
Flickr page for this photo.
Visit the Eye for Science Flickr group.
Get the "Eye for Science" widget
here
and install it on your own blog. Spread the scienticity!
Like this image? Want it for your smartphone wallpaper?
Use this QR Code to load it on your smartphone and enjoy!