Semiconductor laser driver circuit

Details Semiconductor laser driver circuit Semiconductor laser driver circuit

1991-02-06

1992-09-08

Epps, Georgia Y.

Coherent light generators

Particular component circuitry

Optical pumping

372 31, 372 26, H01S 300

Patent

active

051464640

ABSTRACT:
A semiconductor laser driver circuit has a high frequency current source which superimposes a high frequency current on a dc current so that a semiconductor laser, which oscillates in a single longitudinal mode when driven by the dc current, may oscillate in multiple longitudinal modes. The driver circuit includes a dc current driving level control for automatically adjusting the power output of the semiconductor laser circuitry for determining differential quantization efficiency of the semiconductor laser in reference to the differential quantization efficiency and adjusting the current to achieve a predetermined differential quantization efficiency.

REFERENCES:
patent: 4689795 (1987-08-01), Yoshimoto et al.

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