Publication

A multi-color fast-switching microfluidic droplet dye laser

Demetri Psaltis
2009
Journal Articles

Abstract

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. © 2009 The Royal Society of Chemistry.

Official source

https://infoscience.epfl.ch/entities/publication/9e164168-f6ca-412b-98a1-a942e770f731

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Demetri Psaltis
2009
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/9e164168-f6ca-412b-98a1-a942e770f731

About this result

Related concepts (19)

Laser

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word laser is an anacronym that originated as an acronym for light amplification by stimulated emission of radiation. The first laser was built in 1960 by Theodore Maiman at Hughes Research Laboratories, based on theoretical work by Charles H. Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light that is coherent.

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A laser diode (LD, also injection laser diode or ILD, or diode laser) is a semiconductor device similar to a light-emitting diode in which a diode pumped directly with electrical current can create lasing conditions at the diode's junction. Driven by voltage, the doped p–n-transition allows for recombination of an electron with a hole. Due to the drop of the electron from a higher energy level to a lower one, radiation, in the form of an emitted photon is generated. This is spontaneous emission.

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