Electrically pumped, solid-state distributed feedback laser with

Details Electrically pumped, solid-state distributed feedback laser with Electrically pumped, solid-state distributed feedback laser with

1974-10-15

1976-07-20

Sikes, William L.

Oscillators

Molecular or particle resonant type

331 945H, 350 96WG, H01S 3082

Patent

active

039709582

ABSTRACT:
A distributed feedback, (DFB) electrically pumped diode laser in which the spacing of the periodic structure within the diode is selected to optimize the interaction between the periodic structure and the electromagnetic waves in the diode laser. The degree to which the waves interact with the periodic structure is described mathematically by a coupling constant K, with larger values of K corresponding to lower gains required to produce laser operation. It is shown that in DFB diode lasers higher order transverse modes have a higher coupling constant K with the periodic structure than does the lowest order transverse mode and thus the higher order transverse modes will lase more easily than the lowest order transverse mode.

REFERENCES:
patent: 3868589 (1975-02-01), Wang
Harris et al., Distributed Feedback Semiconductor Injection Laser, IBM Tech. Discl. Bull., vol. 16, No. 1 (June 1973) pp. 171 and 172.

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