Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2001-12-20
2008-08-05
Nguyen, Dung T (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S045010
Reexamination Certificate
active
07408964
ABSTRACT:
Quantum wells and associated barriers layers can be grown to include nitrogen (N), aluminum (Al), antimony (Sb), phosphorous (P) and/or indium (In) placed within or about a typical GaAs substrate to achieve long wavelength VCSEL performance, e.g., within the 1260 to 1650 nm range. In accordance with features of the present invention, a vertical cavity surface emitting laser (VCSEL) can include at least one quantum well comprised of InGaAsN; barrier layers sandwiching said at least one quantum well; and confinement layers sandwiching said barrier layers. Confinement and barrier layers can comprise AlGaAs, GaAsN. Barrier layers can also comprise InGaAsN. Quantum wells can also include Sb. Quantum wells can be developed up to and including 50 Å in thickness. Quantum wells can also be developed with a depth of at least 40 meV.
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