HDR Photography
For all of the fancy-looking holders and posts and hardware, an optical table is ultimately designed to put specific optics in front of the laser beam as it travels to generate a desired effect. This view of the space leading to our detector shows how many parts can accrue in pursuit of a given goal.
In St. Lawrence’s Raman spectroscopy and microscopy lab, the most potent laser illumination source comes from a neodymium-doped yttrium aluminum garnet. This is a pretty ubiquitous laser source, but I happen to like it because it also demonstrates the value of nonlinear optics: though this laser is emitting light at 1064 nanometers (in the infrared), a suitable doubling crystal can combine two of those 1064 photons together to make a shiny new 532 nm photon.
A dusty lens can be a cause for concern, but the flares of sunlight scattering from those particles can make for some rainbow-y lens flare. Paired that with the fallen trees and friendly ferns of Muir Woods National Monument. Instant fairyland!
Decaseconds 