a knowledge base from your Laser Helpers at Kentek with reference and discussion board information about laser technology, laser safety, and photonics history
March 7, 2014 By laserhelpers2
A unit of measurement for a wavelength of light (written Å), equal to one ten billionth of a meter (10-10 meter). (Used occasionally.)
All undesirable variations in output (either amplitude or frequency); angular drift of the beam, measured in milliradians before, during, and after warm-up.