Phys. Rev. Lett. 94, 073901 (2005) [4 pages]Photon Localization Laser: Low-Threshold Lasing in a Random Amplifying Layered Medium via Wave LocalizationReceived 16 July 2004; published 23 February 2005 We demonstrate low-threshold lasing in random amplifying layered medium via photon localization. Lasing is facilitated by resonant excitation of localized modes at the pump laser wavelength, which are peaked deep within the sample with greatly enhanced intensity. Emission occurs into long-lived localized modes overlapping the localized gain region. This mechanism overcomes a fundamental barrier to reducing lasing thresholds in diffusive random lasers, in which multiple scattering restricts the excitation region to the proximity of the sample surface. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.073901
DOI:
10.1103/PhysRevLett.94.073901
PACS:
42.55.Zz, 42.25.Dd
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.