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Laser diode assembly with tunnel junctions and providing multiple beams

  • US 5,212,706 A
  • Filed: 12/03/1991
  • Issued: 05/18/1993
  • Est. Priority Date: 12/03/1991
  • Status: Expired due to Term
First Claim
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1. A laser diode assembly providing multiple output beams from multiple p-n junctions and at least one tunnel junction comprising:

  • (a) a semiconductor substrate;

    (b) a multiplicity of superposed semiconductor laser stacks thereon each having an active layer sandwiched between p and n layers, and at least one pair of adjacent semiconductor laser stacks having a tunnel junction therebetween; and

    (c) ohmic contacts on the outer surface of said substrate and the outer surface of the uppermost semiconductor laser stack, whereby an applied potential across said ohmic contacts produces lasing in the active layers semiconductor laser stacks on the opposite sides of said tunnel junction.

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