Reduction of intensity noise in semiconductor lasers by simultaneous usage of the superposition of high frequency current and the electric negative feedback

Reduction of the intensity noise in semiconductor lasers is an important subject for the higher performance of an application. Simultaneous usage of the superposition of high frequency current and the electric negative feedback loop was proposed to suppress the noise for the higher power operation of semiconductor lasers. Effective noise reduction of more than 25 dB with 80mW operation was experimentally demonstrated. Copyright © 2012 The Institute of Electronics, Information and Communication Engineers