Surface emitting lasers with combined output

Details Surface emitting lasers with combined output Surface emitting lasers with combined output

1988-08-09

1990-01-16

Gonzalez, Frank

Coherent light generators

Particular active media

Semiconductor

372 50, 372 97, 372102, H01S 319

Patent

active

048948330

ABSTRACT:
Surface emitting lasers are laterally aligned and coupled together and also have their light output signals combined. This results in greater phase and frequency coherency and narrower and reduced amplitude sidelobes. Preferably, not more than two lasers are longitudinally aligned along the same axis for still greater coherency compared with adding the light output signals of more than two longitudinally aligned lasers. The lasers can be of the DH-LOC type or of the QW type.

REFERENCES:
patent: 3996492 (1976-12-01), McGroddy
patent: 4092659 (1978-05-01), Ettenberg
patent: 4719635 (1988-01-01), Yeh
patent: 4730325 (1988-03-01), Chow
patent: 4760578 (1988-07-01), Oshima et al.
Uematsu et al; "Grating-Coupled . . . DBR"; Electronics Letters, vol. 13, No. 25; 12/08/1977; pp. 759-760.
N. W. Carlson et al., "Dynamically Stable 0.degree. Phase Mode Operation of a Grating-Surface-Emitting Diode-Laser Array", Optics Letters, vol. 13, No. 4, Apr. 1988, pp. 312-314.
P. Zory et al., "Grating-Coupled Double-Heterostructure AlGaAs Diode Lasers," IEEE Journal of Quantum Electronics, vol. QE-11, No. 7, Jul. 1975, pp. 451-457.

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