Mid-IR type-I and type-II quantum cascade lasers

W. Y. Hwang, Chih Hsiang Lin, S. V. Zaitsev, J. Um, H. W. Ren, Claire Gmachl, Albert L. Hutchinson, Federico Capasso

Research output: Contribution to journalArticlepeer-review


Mid-infrared (MIR) lasers are highly desirable for a variety of application such as medical diagnostics, remote chemical sensing, infrared countermeasures, and molecular spectroscopy. Semiconductor diode lasers have significant advantages in terms of cost, volume, weight, reliability, and power dissipation. A compact, MIR semiconductor lasers can be spanned from 2 to beyond 13 μm, which include the absorption lines of most target gases and pollutant that are currently the object of environmental sensing applications. The developments in the operation of type-II interband cascade laser, a laser with high output power and low threshold current density at liquid nitrogen temperature, are discussed.

Original languageEnglish (US)
Pages (from-to)69-70
Number of pages2
JournalConference Digest - IEEE International Semiconductor Laser Conference
StatePublished - 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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