Figure 3 | Scientific Reports

Figure 3

From: Multipolar, time-dynamical model for the loss compensation and lasing of a spherical plasmonic nanoparticle spaser immersed in an active gain medium

Figure 3

Main figure: map of the stable and linearly unstable region (inside contour), as a function of frequency/wavelength and the overall gain level in the active medium .

Inset: instability region width Δλ as a function of overall gain. Parameters: εb = 1.85 (ethanol solvent), ħω21 = ħω0 = 3.21 eV, ħΔ = 0.2 eV.

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