Optical semiconductor device with diffraction grating structure

Details Optical semiconductor device with diffraction grating structure Optical semiconductor device with diffraction grating structure

1997-05-20

1999-07-20

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

372 96, 385 37, 385131, H01S 319, G02B 634

Patent

active

059264934

ABSTRACT:
Optical semiconductor devices with integrated diffraction gratings with higher quality are realized through the use of Al-free grating layers. AlGaAs/GaAs regime optical semiconductor devices, such as laser diodes or optical filters, conventionally utilize an AlGaAs grating layer that has a strong affinity for oxidation. Instead of a Al-containing layer, a quantenary, InGaAsP grating layer is utilized, lattice matched to the underlying AlGaAs/GaAs structure, substantially eliminating any problem of oxide contamination. Also, an Al-free, ternary InGaP grating layer is utilized in the InGaP/InGaAsP/GaAs material regime. The quantum well active region of these devices may also be modified to extend the gain bandwidth of operation of these devices to insure continued operation over a wider temperature range with the wavelength peak of the grating in that the wavelength peak of the grating more assuredly remains within the wavelength operating range of the device.

REFERENCES:
patent: 4786951 (1988-11-01), Tokuda et al.
patent: 4815087 (1989-03-01), Hayashi
patent: 5208824 (1993-05-01), Tsang
patent: 5347533 (1994-09-01), Higashi et al
patent: 5416866 (1995-05-01), Sahlen
patent: 5619523 (1997-04-01), Connolly et al.
patent: 5727015 (1998-03-01), Takhashi et al.
P. K. York et al., "MOCVD Regrowth over GaAs/AlGaAs Gratings for High Power Long-Lived InGaAs/AlGaAs Lasers", Journal of Crystal Growth, vol. 124, pp. 709-715, (1992) (No Month).

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