Figure 5.

Lévy exponents of the lasing modes. (a) Three single-shot emission spectra shown at the pump fluence 333.71 mJ/cm². Roughly 43 out of 100 single-shot spectra show these sharp spikes. Others look like the spectrum shown in Fig. 2(b). (b) Values of the Lévy exponent α calculated at the wavelengths, 559.6 nm, 564.7 nm, and 565.9 nm, indicated by vertical lines in (a).