Gain-coupling distributed feedback semiconductor and method of p

Coherent light generators – Particular resonant cavity – Distributed feedback

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

372 50, H01S 308

Patent

active

057038996

ABSTRACT:
There is a phenomenon that, when an epitaxial growth is performed on an uneven surface, such as a periodical surface or grating surface, having surfaces with different surface indices, p- and n-type layer portions can be simultaneously formed depending on growth surface orientations if an impurity such as Si or group IV elements is used. In a gain-coupling distributed feedback laser of the present invention, that phenomenon is utilized, and a current restraint layer, which includes alternately-arranged p- and n-type layer portions, is formed in the vicinity of an active layer. Thus, current is unevenly injected into the active layer, and a periodical gain structure can be established. As a result, a distributed feedback structure is achieved, which performs a gain-coupling operation.

REFERENCES:
English translation of Japanese Patent Application Laid-Open, No. 6241978, Oct. 7, 1988, for "Distributed Feedback Semiconductor Laser", filed Mar. 27, 1987.
Nakano et al., "Facet Reflection Independent, Single Longitudinal Mode Oscillation in a GaAlAs/GaAs Distribution Feedback Laser Equipped with a Gain-Coupling Mechanism," App. Phys. Lett., 55:1606 Oct. (1989).
Luo et al., "Fabrication and Characteristics of Gain-Coupled Distribution Feedback Semiconductor Lasers with a Corrugated Active Layer," IEEE J. Quantum Elec., 27:1724 Jun. (1991).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Gain-coupling distributed feedback semiconductor and method of p does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gain-coupling distributed feedback semiconductor and method of p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gain-coupling distributed feedback semiconductor and method of p will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-209940

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.