A multi-color fast-switching microfluidic droplet dye laser

Lab Chip. 2009 Oct 7;9(19):2767-71. doi: 10.1039/b914066b. Epub 2009 Aug 14.


We describe a multi-color microfluidic dye laser operating in whispering gallery mode based on a train of alternating droplets containing solutions of different dyes; this laser is capable of switching the wavelength of its emission between 580 nm and 680 nm at frequencies up to 3.6 kHz-the fastest among all dye lasers reported; it has potential applications in on-chip spectroscopy and flow cytometry.

MeSH terms

  • Coloring Agents / chemistry*
  • Flow Cytometry
  • Lasers*
  • Microfluidic Analytical Techniques / methods*
  • Solutions


  • Coloring Agents
  • Solutions