Quantum-dot cascade laser

Details Quantum-dot cascade laser Quantum-dot cascade laser

1997-06-30

1999-10-05

Bovernick, Rodney

Coherent light generators

Particular active media

Semiconductor

372 96, 372 46, H01S 319

Patent

active

059635711

ABSTRACT:
A quantum-dot cascade laser which eliminates undesirable single phonon decays associated with quantum-well devices. The elimination of single phonon decays is realized by a three-dimensional confinement resulting in a several-order-of-magnitude reduction in the threshold current. Vertical radiative transitions are employed within single quantum dots contained by Bragg reflectors. Dot size, dot density and dot uniformity requirements are presented along with several embodiments.

REFERENCES:
patent: 5457709 (1995-10-01), Capasso et al.
patent: 5509025 (1996-04-01), Capasso et al.
patent: 5692003 (1997-11-01), Wingreen et al.
patent: 5727010 (1998-03-01), Capasso et al.
Tackeuchi et al, "Time-Resolved Study of carrier Transfer among InAs/GaAs Multi-Coupled Quantum Dots", Jpn. J. Appl. Phys. Part 2, No. 11A, vol. 34, pp. 1439-1441, Nov. 1, 1995.
J. Faist et al., "Quantum Cascade Laser", Science, vol. 264, pp. 553-556, Apr. 22, 1994.

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