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Unidirectional laser emission from polymer-based spiral microdisks
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View: Figures


Image of FIG. 1.
FIG. 1.

Optical microscope image of the spiral microcavity with geometrical parameters and . The active part of the microcavity is made of a DCM-doped poly(methylmethacrylate) film. The inset shows a SEM image of the notch.

Image of FIG. 2.
FIG. 2.

Laser emission spectra of (a) and (b) polymer spirals with . The factor for a spiral is . The value of the larger spiral cannot be measured because of limited spectrometer resolution. The inset is a scheme of the flood-pump geometry.

Image of FIG. 3.
FIG. 3.

Unidirectional far-field emission pattern for a and spiral. In the SS-ring pumping case (a), the spiral microcavity is ring pumped with a ring-shaped beam of diameter and ring thickness . In the LS-ring pumping (b), and . Insets in far-field plots exhibit pump locations. (c) Diagram of the ICCD camera angle orientation.

Image of FIG. 4.
FIG. 4.

Log-Log plot of peak output intensity vs peak pump intensity for the ring pumping scheme with light. (a) SS-ring pumping. (b) LS-ring pumping. Solid lines are linear fits to the experimental data.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Unidirectional laser emission from polymer-based spiral microdisks