Components of opto-electronics PLight emitting diodes( LED) 来来 ◆ Laser diodes(LD) .Why and how these diodes emit light? To answer the question we need to understand 口 diodes Solid state physics semiconductors underlying these 口 pn junctions semiconductor devices is necessary 电t客 University of Electronic Sciente and Technology of China7 Components of opto-electronics ◆Light emitting diodes (LED) ◆Laser diodes (LD) ◆Why and how these diodes emit light? ◆To answer the question we need to understand; diodes semiconductors pn junctions Solid state physics underlying these semiconductor devices is necessary