Coherent light generators – Particular component circuitry – Optical pumping
Patent
1993-02-25
1994-05-03
Epps, Georgia Y.
Coherent light generators
Particular component circuitry
Optical pumping
372 29, H01S 310
Patent
active
053094638
ABSTRACT:
A laser driving circuit is provided for driving a laser diode, in which the intensity of the laser beam emitted by the laser diode depends upon the amount of electrical current flowing through the laser diode. The laser driving circuit includes a current source for generating an electrical current to flow through the laser diode, the electrical current being varied in accordance with the voltage applied to the current source. In the laser driving circuit, voltage is applied to the current source in accordance with the intensity of the laser beam emitted by the laser diode. A variable resistor member is further provided for varying the voltage applied to the current source and at least one fixed resistor member is selectively connected in parallel with the variable resistor member for dividing the voltage, varied by the variable resistor member, at a predetermined ratio.
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Asahi Kogaku Kogyo Kabushiki Kaisha
Epps Georgia Y.
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