| a laser in which a semiconductor is the light-emitting source, used in many medical procedures. |
| diode laser n. See semiconductor laser. |
| semiconductor laser n. A solid-state device that consists of two outer semiconductor layers separated by a middle layer and generates laser radiation when charge carriers of opposite polarity, one each from the top and bottom layers, meet in the middle layer. Also called diode laser. |
| diode laser
See semiconductor laser. |