Facile production of up-converted quantum dot lasers

Nanoscale. 2011 Oct 5;3(10):4109-13. doi: 10.1039/c1nr10801h. Epub 2011 Sep 13.

Abstract

We report a facile production of an up-converted surface-emitting DFB laser, performed by exploiting the versatility of sol-gel chemistry, the intriguing properties of well designed graded CdSe-CdS-Cd(0.5)Zn(0.5)S-ZnS colloidal quantum dots, and the scalability of nanoimprinting. Our laser prototype operates in the visible region following efficient optical pumping by either direct one-photon excitation or through the up-conversion of near infrared (NIR) light. By achieving cavity mode Q-factors in excess of 650 and retaining high lasing stabilities in air, this work highlights the feasibility of creating integrated lasing devices through solution based methods.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cadmium Compounds / chemistry
  • Gels / chemistry
  • Lasers*
  • Quantum Dots*
  • Selenium Compounds / chemistry
  • Sulfides / chemistry
  • Zinc Compounds / chemistry

Substances

  • Cadmium Compounds
  • Gels
  • Selenium Compounds
  • Sulfides
  • Zinc Compounds
  • cadmium sulfide
  • cadmium selenide
  • zinc sulfide