Nick Holonyak

Nick Holonyak OSA Fellow Nick Holonyak, Jr. defied critics when he discovered a new alloy that would emit light in the red part of the visible spectrum, creating the world's first visible and practical semiconductor LED in 1962. 2012 marks the 50th anniversary of his discovery, which has led to a host of developments, from digital clocks to the lasers that make CD players possible to fiber-optic communication networks. 

To read more about Nick Holonyak and the LED visit the following:
Nick Holonyak, Jr.: Birth of an Inventor
Nick Holonyak, Jr.: Father of the Visible LED
Campus set to honor LED inventor Holonyak
GE Reports: Nick Holonyak Turned on the World's First Practical LED Light
Video: Nick Holonyak, Inventor of the LED