Wavelength tuning of quantum well heterostructure lasers using a

Details Wavelength tuning of quantum well heterostructure lasers using a Wavelength tuning of quantum well heterostructure lasers using a

1983-09-09

1986-05-13

Davie, James W.

Coherent light generators

Particular beam control device

Tuning

372 45, 372 92, 372102, 372108, H01S 3101

Patent

active

045891150

ABSTRACT:
The method of and apparatus for tuning the wavelength using an external diffraction grating is accomplished with a quantum well injection laser wherein the range of operating wavelength selection is extended beyond the expectations of wavelength selection in fundamental emission spectrum of conventional bulk-crystal heterostructure lasers to include wavelength selection at the multiple carrier recombination transition energies possible in the conduction band sub-bands and valence band sub-bands present in quantum well heterostructures of single or multiple quantum well lasers. Quantum well heterostructure lasers have a unique advantage over previous tuned semiconductor lasers, as exemplified in the previously cited prior art, in that the active region of the quantum well laser can be bandfilled to well above the bulk crystal band edge at moderate current densities indicative of excellent candidates for broad band tuning through a wide range of the quantum well sub-bands of the quantum well structure.

REFERENCES:
patent: 3753148 (1973-08-01), Billman
patent: 3928818 (1975-12-01), White
patent: 4092659 (1978-05-01), Ettenberg
J. A. Rossi et al., "Time Delays in External . . . Diode Lasers", Applied Physics Letters, vol. 23(5) pp. 254-256 (9/1/73).
J. A. Rossi et al., "High-Power Narrow . . . GaAs Diode Lasers", Applied Physics Letters, vol. 23(1), pp. 25-27 (7/1/73).
Thomas L. Paoli et al., "Single Longitudinal . . . Optical Feedback", Applied Physics Letters, vol. 25(12), pp. 744-746 (12/15/74).
P. D. Wright et al., "Homogeneous . . . External Grating Cavity", Applied Physics Letters, vol. 29(1), pp. 18-20 (7/1/76).
P. D. Wright et al., "In.sub.1-x Ga.sub.x P.sub.1-z Asz . . . External Cavity", Journal of Applied Physics, vol. 47(8), pp. 3580-3586 (8/76).
R. Wyatt et al., "External Cavity Laser with 55 nm Tuning Range", Electronics Letters, vol. 19(3), pp. 110-112 (2/3/83).
R. D. Dupuis et al., "Quantum Well . . . Chemical Vapor Deposition", IEEE Journal of Quantum Electronics, vol. QE-15(8) pp. 756-761 (8/79).
J. J. Coleman et al., "Induced Phonon . . . Heterostructures (L.sub.2 .apprxeq.200-500 .ANG.)", Applied Physics Letters, vol. 37(1), pp. 15-17 (7/1/80).

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