On-chip high frequency damping for laser diode driver chips

Details On-chip high frequency damping for laser diode driver chips On-chip high frequency damping for laser diode driver chips

1996-05-03

1997-12-23

Pascal, Robert

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Arc machining

327325, 327583, H05B 4300

Patent

active

057010609

ABSTRACT:
A laser diode driver chip is disclosed which has a circuit to substantially reduce a ringing on a laser diode driving current generated by the laser diode driver chip. This invention identifies that the ringing on the laser diode driving current is caused by three different resonances which are coupled together. This invention also suggests a model for the sources of these three different resonances and identifies the three main nodes which are common between the sources of resonances. Finally, this invention places a damping circuit between the three main nodes of the laser diode driver to substantially reduce the ringing on the laser diode driving current.

REFERENCES:
patent: 3887836 (1975-06-01), Leete

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