×

Vertical-cavity surface-emitting laser with an intracavity quantum-well optical absorber

  • US 6,026,108 A
  • Filed: 05/01/1998
  • Issued: 02/15/2000
  • Est. Priority Date: 10/16/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A laser, comprising:

  • a first contact to receive an active region control signal;

    a second contact to receive an optical absorber control signal;

    a sandwich of distributed Bragg reflector mirror stacks, each distributed Bragg reflector mirror stack having an alternate doping with respect to an adjacent distributed Bragg reflector mirror stack;

    an active region positioned in said sandwich to provide optical gain in response to said active region control signal; and

    an optical absorber positioned in said sandwich, said optical absorber having wavelength dependent absorption responsive to said optical absorber control signal, thereby selectively producing negative differential resistance in said optical absorber.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×