Pulse transformer package for impedance matching a laser diode t

Details Pulse transformer package for impedance matching a laser diode t Pulse transformer package for impedance matching a laser diode t

1982-12-23

1984-11-27

Gensler, Paul L.

Wave transmission lines and networks

Coupling networks

With impedance matching

336 82, 336174, H03H 738

Patent

active

044853610

ABSTRACT:
A package for matching the characteristic impedance of a transmission line to the impedance of a pulsed semiconductor laser diode so that short duration pulses of light can be produced with a fast repetition rate. The package has a toroidal transformer in a cavity of a main body, with a multiturn primary connected to a transmission line. The laser diode is mounted at the edge of a known sandwich between two thin metal plates separated by an insulating layer. A spacer and metal cover cap are placed over the sandwich, and a screw passing through holes of all the parts is threaded into the main body. The screw passing through the transformer core forms a one-turn secondary. Not only does this allow the matching of the characteristic impedance, but also provides heat sinking for the diode. Assembly with a screw makes the unit easy to fabricate, and to replace the laser diode sandwich.

REFERENCES:
patent: 4379273 (1983-04-01), Bender
patent: 4431974 (1984-02-01), Landt

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