Low threshold vertical cavity surface emitting laser

Coherent light generators – Particular active media – Semiconductor

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

372 45, 372 92, H01S 319

Patent

active

054208807

ABSTRACT:
In a VCSEL, vertical cavity surface emitting laser, lateral traveling mode density is reduced by reducing the number of traveling modes available to spontaneous emission of photons in the active cavity region, to suppress spontaneous emission into lateral traveling modes, to increase spontaneous emission into axial normal modes, to lower lasing threshold. The sidewall of the active cavity region is contoured, preferably by a 90.degree. symmetrical V-shaped notch, to internally reflect laterally traveling photons, to suppress lateral traveling modes.

REFERENCES:
patent: 5132982 (1992-07-01), Chan et al.
patent: 5136603 (1992-08-01), Hasnain et al.
patent: 5359618 (1994-10-01), Lebby et al.
patent: 5363393 (1994-11-01), Uomi et al.
"Surface Emitting Semiconductor Lasers", Kenichi Iga et al, IEEE Journal of Quantum Electronics, vol. 24, No. 9, Sep. 1988, pp. 1856-1854.
"Lasing Characteristics of GaAs Microresonators", J. L. Jewell et al, Appl. Phys. Lett. 54(15), 10 Apr. 1989, pp. 1400-1402.
"Controlled Spontaneous Emission in Microcavity Semiconductor Lasers", Coherence, Amplification, and Quantum Effects in Semiconductor Lasers, Edited by Y. Yamamoto, Published by John Wiley & Sons, N.Y., 1991, pp. 561-615 (no month).
"Monolithic Integration of Photodetector With Vertical Cavity Surface Emitting Lasers", G. Hasnain et al, Electronis Letter, vol. 27, No. 18, Aug. 19, 1991, pp. 630-632.
"GaAs Vertical-Cavity Surface Emitting Lasers Fabricated By Reactive Ion Etching", Kent D. Choquette et al, IEEE Photonics Technology Letters, vol. 3, No. 10, Oct. 1991, pp. 859-862.

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

Low threshold vertical cavity surface emitting laser does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low threshold vertical cavity surface emitting laser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low threshold vertical cavity surface emitting laser will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-368276

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