Lateral coupled cavity semiconductor laser

Details Lateral coupled cavity semiconductor laser Lateral coupled cavity semiconductor laser

1985-03-04

1987-06-16

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

372 20, 372 46, 372 97, H01S 308, H01S 310

Patent

active

046740961

ABSTRACT:
Two or more parallel waveguide lasers of different effective length are coupled together by their evanescent waves such that the composite structure functions as a single cavity having a longitudinal mode with resonances related to the resonances of the separate cavities. A very strong selection of the composite operating frequency, and suppression of most or all of the other longitudinal modes, with frequency tuning of the composite structure (both continuously and by mode hopping), can be accomplished by varying the relative currents supplied to each laser. Upon holding one cavity at one current level for a selected operating point and shifting the other, bistable operation can be achieved.

REFERENCES:
patent: 4284963 (1981-08-01), Allen, Jr. et al.
J. K. Carney et al, "Double-Heterojunction Laser Diodes with Multiply Segmented Contacts", Appl. Phys. Lett. 38(5), Mar. 1, 1981, pp. 303-305.
C. H. Henry and R. F. Kazarinov, Stabilization of Single Frequency Operation of Coupled-Cavity Lasers, IEEE Journal of Quantum Electronics, vol. QE-20, No. 7, Jul. 1984, pp. 733-744.

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