Design, synthesis and processing articles within Nature Photonics

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• Letter | 10 January 2010

  Highly power-efficient quantum cascade lasers

  A quantum cascade laser with a wall-plug efficiency of up to 50% is experimentally realized when operated at low temperatures and in pulsed mode. The high-efficiency performance is achieved by implementing an ultrastrong coupling between the injector and active regions.

  • Peter Q. Liu
  • , Anthony J. Hoffman
  •  & Claire F. Gmachl

• Letter | 10 January 2010

  Quantum cascade lasers that emit more light than heat

  A mid-infrared quantum cascade laser that emits more light than heat and features a high wall-plug efficiency of up to 53% when operated a temperature of 40 K is reported. The device utilizes a single-well injector design.

  • Yanbo Bai
  • , Steven Slivken
  •  & Manijeh Razeghi