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Microfluidic tunable dye laser with integrated mixer and ring resonator
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Schematic presentation of a tunable dye laser with a ring cavity and integrated microfluidic elements (The three adjacent control channels of the peristaltic pump are numbered 1, 2, and 3, whereas A, B, and C indicate the control channels of the fluid entrances and exit). (b) Scanning electron micrograph of the ring cavity made of SU-8 resist.

Image of FIG. 2.
FIG. 2.

(a) Measured intensity of a fluorescein volume mixed in the device: flow velocity and mixture time appear, respectively, in the time between two maximums of the intensity, which corresponds to a full rotation, and in the damping of the sinusoid, which characterizes the mixture time. (b) Flow velocity as a function of pumping actuation frequency.

Image of FIG. 3.
FIG. 3.

Emission spectra obtained for different optical pumping powers. The inset displays the dye laser output power as a function of the optical pumping power and shows a lasing threshold.

Image of FIG. 4.
FIG. 4.

Dye laser output power as a function of the flow velocity. The inset displays a comparison between the results of simulation (dashed line) and experiments (full squares) obtained for the output intensity as a function of photobleaching parameter.

Image of FIG. 5.
FIG. 5.

Laser emission peaks, centered at 569, 567, and , for three different dye concentrations obtained by injecting more and more ethanol in the dye solution.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Microfluidic tunable dye laser with integrated mixer and ring resonator