Accession Number : ADD011499

Title :   Pulse Transformer Package for Impedance Matching a Laser Diode to a Transmission Line.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Bender,G M

Report Date : 27 Nov 1984

Pagination or Media Count : 4

Abstract : This patent covers a package for matching the characteristics impedance of a transmission line to the impedance of a pulsed semiconductor laser diode so that short duration pulse of light can be produced with a fast repetition rate. The packages has a toroidal transformer in a cavity of a mainbody, 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 space 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.

Descriptors :   *Patents, *Pulsed lasers, *Pulse transformers, *Semiconductor lasers, Mounts, Impedance matching, Semiconductor diodes, Pulse rate, Toroids, Metal plates, Sandwich construction, Electrical impedance, Transmission lines, Repetition rate, Insulation, Field effect transistors, Pulse amplifiers, Sinking, Layers

Subject Categories : Electrical and Electronic Equipment
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE