Corrugation coupled twin guide laser

Details Corrugation coupled twin guide laser Corrugation coupled twin guide laser

1975-11-24

1977-08-30

Sikes, William L.

Oscillators

Molecular or particle resonant type

357 18, H01S 319

Patent

active

040457494

ABSTRACT:
An electrically pumped distributed feedback grating coupled diode laser having an optical cavity containing two closely spaced layers, a first of the layers is electrically pumped and the second of the layers is corrugated. Optical wavelength radiation and amplification of said radiation is generated in the first layer by carrier recombination with the radiation spreading to the second layer for coherent reflection by the corrugation and for low loss transmission. Carrier confinement in the first layer and optical confinement in the optical cavity are achieved by surrounding each of these layers by materials having a higher bandgap and lower index of refraction than the materials of the first and the second layers. The corrugation of the second layer can extend over only a portion of the length of the second layer such that the uncorrugated portion of the second layer provides a low loss waveguide.

REFERENCES:
aiki et al., GaAs-GaAlAs Distributed-Feedback Diode Lasers with Separate Optical and Carrier Confinement, App. Phys. lett., vol. 27, No. 3 (Aug. 1, 1975), pp. 145-146.
Nakamura et al., CW Operation of Distributed-Feedback GaAs-GaAlAs Diode Lasers at Temperatures up to 300 K. App. Phys. Lett., vol. 27, No. 7 (Oct. 1,1975), pp. 403-405.

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