50.2 MB (4.3 MB compressed)
4146 x 4230 pixels
35.1 x 35.8 cm ⏐ 13.8 x 14.1 in (300dpi)
BRIAN BELL / SCIENCE PHOTO LIBRARY BRIAN BELL / SCIENCE PHOTO LIBRARY
Technician testing a laser diode module. A laser diode is made of two layers of semiconducting material impregnated with impurities that create opposite electrical properties. Passing an electric current through the diode produces a laser beam. The colour of the laser depends upon the semiconducting material used. This laser diode is produced by Photonic Products Ltd.
Model release not available. Property release not required.