Integrated semiconductor laser array apparatus

Details Integrated semiconductor laser array apparatus Integrated semiconductor laser array apparatus

1992-07-20

1994-08-09

Davie, James W.

Coherent light generators

Particular beam control device

Optical output stabilization

372 29, H01S 310

Patent

active

053373235

ABSTRACT:
An integrated semiconductor laser array apparatus which is simple in structure and yet capable of stabilizing the light output from each individual semiconductor laser element. The integrated semiconductor laser array apparatus includes a semiconductor laser array provided by integrating a plurality of semiconductor laser elements. The semiconductor laser array includes a master semiconductor laser element selected from the plurality of semiconductor laser elements and slave semiconductor laser elements constituted of the remaining semiconductor laser elements. A laser beam output from the master semiconductor laser element is sensed by a photodiode and thereby a photocurrent corresponding to the received light ,intensity is generated and the bias current for the master semiconductor laser element is controlled by a first bias current control circuit such that the generated photocurrent is kept constant. The bias current for each of the slave semiconductor laser elements is controlled by a second bias current control circuit depending on the output from the First bias current control circuit such that the ratio between the bias current for the master semiconductor laser element, and the bias current for each of the plurality of slave semiconductor laser elements is kept constant.

REFERENCES:
patent: 4355395 (1982-10-01), Salter et al.
patent: 4856015 (1989-08-01), Matsui et al.
patent: 5274653 (1993-12-01), Ohashi

Affiliated with

Also associated with

Rating

Integrated semiconductor laser array apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated semiconductor laser array apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated semiconductor laser array apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-221971