Semiconductor laser driving circuit

Details Semiconductor laser driving circuit Semiconductor laser driving circuit

1990-02-26

1991-08-06

Scott, Jr., Leon

Coherent light generators

Particular component circuitry

Optical pumping

372 29, H01S 300

Patent

active

050381890

ABSTRACT:
A semiconductor laser driving circuit is arranged so that a predetermined number of transistors can be selected from a group of transistors disposed in parallel according to the characteristics of a semiconductor laser and the selected transistors are connected in parallel between the semiconductor laser and a current source. An optimum current is allowed to flow through the semiconductor laser to cause it to generate a required light output. Moreover, a collector current which provides the optimum characteristics flows through each of the selected transistors. Therefore, an optimum high-speed response can always be realized irrespective of the magnitude of the driving pulse current of the semiconductor laser.

REFERENCES:
patent: 4807239 (1989-02-01), Takano et al.

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