Semiconductor laser driving device

Details Semiconductor laser driving device Semiconductor laser driving device

1988-05-23

1989-03-14

Sikes, William L.

Coherent light generators

Particular component circuitry

Optical pumping

372 25, 372 29, 372 30, 372 31, H01S 300

Patent

active

048130486

ABSTRACT:
A semiconductor laser driving device using FET's as a positive element in a bias current supply circuit and a pulse current supply circuit, and having compensating circuits for compensating differences in the characteristics of the FET's and a laser diode used in the driving device. Also a pulse amplifier suitable for use as the pulse current supply circuit in the semiconductor driving device, which circuit cuts off a pulse top side portion and a pulse base side portion of an input pulse with respect to a mesial point of the input pulse to obtain an output pulse having a desired pulse amplitude in response to a control signal, without varying a pulse width.

REFERENCES:
patent: 4292606 (1981-09-01), Trimmel
patent: 4639924 (1987-01-01), Tsunekawa

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