Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2004-11-24
2009-06-02
Rodriguez, Armando (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S046015, C372S050124
Reexamination Certificate
active
07542499
ABSTRACT:
A surface-emission laser diode includes an active layer, a pair of cavity spacer layers formed at both sides of the active layer, a current confinement structure defining a current injection region into the active layer, and a pair of distributed Bragg reflectors opposing with each other across a structure formed of the active layer and the cavity spacer layers, the current confinement structure being formed by a selective oxidation process of a semiconductor layer, the pair of distributed Bragg reflectors being formed of semiconductor materials, wherein there is provided a region containing an oxide of Al and having a relatively low refractive index as compared with a surrounding region in any of the semiconductor distributed Bragg reflector or the cavity spacer layer in correspondence to a part spatially overlapping with the current injection region in a laser cavity direction.
REFERENCES:
patent: 7170916 (2007-01-01), Kim
patent: 2001/0030319 (2001-10-01), Sato et al.
patent: 11-054838 (1999-02-01), None
patent: 2001-060739 (2001-03-01), None
K. D. Choquette, et al., “Cavity characteristics of selectively oxidized vertical-cavity lasers,” Applied Phs. Lett., vol. 66, No. 25, Jun. 19, 1995, pp. 3413-3415.
K. D. Choquette, et al., “Low threshold voltage vertical-cavity lasers fabricated by selective oxidation,” Electronic Letters, Nov. 24, 1994, vol. 30, No. 24, pp. 2043-2044.
L. W. Tu, et al., “High Temperature Performance Of Three-Quantum-Well Vertical-Cavity Top-Emitting Lasers,” Electronic Letters, Feb. 28, 1991, vol. 27, No. 5, pp. 457-458.
T. H. Oh, et al., “Cavity-Induced Antiguiding in a Selectively Oxidized Vertical-Cavity Surface-Emitting Laser,” IEEE Photonics Technology Letters, vol. 10, No. 1, Jan. 1998, pp. 12-14.
D. Zhou, et al., “Simplified-antiresonant reflecting optical waveguide-type vertical-cavity surface-emitting lasers,” Applied Physics Letters, vol. 76, No. 13, Mar. 27, 2000, pp. 1659-1661.
D. Zhou, et al., “High-Power Single-Mode Antiresonant Reflecting Optical Waveguide-Type Vertical-Cavity Surface-Emitting Lasers,” IEEE Journal of Quantum Electronics, vol. 38, No. 12, Dec. 2002, pp. 1599-1606.
Dickstein & Shapiro LLP
Ricoh & Company, Ltd.
Rodriguez Armando
LandOfFree
Surface-emission laser diode and surface-emission 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 Surface-emission laser diode and surface-emission laser..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface-emission laser diode and surface-emission laser... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4130905