Display Settings:


Send to:

Choose Destination
See comment in PubMed Commons below
Phys Rev Lett. 2004 Oct 29;93(18):187403. Epub 2004 Oct 28.

Two-photon lasers based on intersubband transitions in semiconductor quantum wells.

Author information

  • 1Center for Nanotechnology, NASA Ames Research Center, Mail Stop N229-1, Moffett Field, CA 94035, USA. cning@mail.arc.nasa.gov


We propose to make a two-photon laser based on intersubband (sublevel) transitions in semiconductor nanostructures. The advantages and feasibility of such a two-photon laser are analyzed in detail using the density matrix approach. Both one-photon and two-photon gains in a three subband quantum well structure are studied on the same footing to show how the two-photon gain can be maximized, while the competing one-photon gain is minimized. The results show that a sufficient two-photon gain can be achieved to overcome one-photon competition and the loss of a conventional semiconductor cavity, making intersubband transitions one of the very few feasible approaches to two-photon lasing.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Physical Society
    Loading ...
    Write to the Help Desk