Grating coupled surface emitting device

Details Grating coupled surface emitting device Grating coupled surface emitting device

1997-09-17

1999-10-19

Bovernick, Rodney

Coherent light generators

Particular resonant cavity

Distributed feedback

372 45, 372 50, 372102, H01S 308, H01S 3085

Patent

active

059700815

ABSTRACT:
A grating coupled surface emitting laser has a diffraction grating of a second or higher order for guided-mode light part of a waveguide region, and extract a beam in a direction perpendicular to the waveguide region. By narrowing a stripe of the waveguide region around the center, the phase of the diffraction grating is shifted to attain a Gaussian distribution for radiation-mode light in a cross section along the waveguiding direction.

REFERENCES:
patent: 4958357 (1990-09-01), Kinoshita
patent: 5070509 (1991-12-01), Meyers
patent: 5448581 (1995-09-01), Wu et al.
patent: 5680411 (1997-10-01), Ramdane et al.
Jun-Ichi Kinoshita, "Axial Profile of Grating Coupled Radiation from Second-Order DFB Lasers with Phase Shifts", IEEE Journal of Quantum Electronics, vol. 26, No. 3, Mar. 1990, pp. 407-412.

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