Distributed feedback laser implemented using an active lateral g

Details Distributed feedback laser implemented using an active lateral g Distributed feedback laser implemented using an active lateral g

1991-07-17

1993-06-29

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

372 46, 372 96, H01S 319

Patent

active

052241157

ABSTRACT:
A distributed feedback (DFB) laser for use in a bipolar field effect transistor laser (known as a BICFET laser) produces a single mode, stable, tunable laser. The single mode, stable, tunable characteristics of the laser are achieved by modifying the structure and operation of a previously disclosed high speed integrated heterojunction field-effect transistor laser by the inclusion of a grating in the n+ active regions to create a periodic refractive index profile. Independent operation of two n+ quantum wells provides frequency tuning through simultaneous and independent control of the mode spacing or mode frequency and the distributed feedback frequency.

REFERENCES:
patent: 3760292 (1973-09-01), Kogelnik et al.
patent: 4347612 (1982-08-01), Fekete et al.
patent: 4445218 (1984-04-01), Coldren
patent: 4591889 (1986-05-01), Gossard et al.
patent: 5084894 (1992-01-01), Yamamoto

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