Most commoly used wavelengths from diode lasers in biophotonics are: 375, 405, 445, 473, 488, 515, 640, 643, 660, 675, 785 nm.
en.wikipedia.org The energy of the photon and hence the emission wavelength of laser diodes is therefore determined by the band gap of the material system used.
en.wikipedia.org The towers are 50 ft tall, and use light-emitting diodes behind the bricks to display digital videos on their inward faces.
en.wikipedia.org The holes are accumulated, or trapped, in a separate semiconductor layer that acts as a diode that prevents them from returning or creating noise.
en.wikipedia.org Light-emitting diodes are now used in applications as diverse as aviation lighting, automotive headlamps, advertising, general lighting, traffic signals, and camera flashes.
en.wikipedia.org