Important notes:
• All random lasing data were collected using software dedicated to operate with Andor spectrometers, the Andor Solis software. Data was converted to and saved as text files and gathered in the excel tables. Thus, all of them can be opened with commonly available software. The abbreviations C3 and C12 stands for PerGREENn (n = 3/12). Files C3_laser. tab, C12_laser.tab, PerOrange_laser.tab, PerBlue_laser.tab are the data concerning the Random Lasing experiments. A vertically, linearly polarized light with a specific wavelength (λ = 420 nm for PerBLUE, 470 nm for PerGREEN3 and PerGREEN12, and 480 nm for PerORANGE) originating from an optical parametric oscillator (Horizon, a high-efficiency mid-band OPO by Continuum), was pumped by a Nd:YAG laser fundamental line that has been tripled in frequency (Surelite II, pulse duration 6 ns, 10 Hz repetition rate). This incident light, directed normally onto the sample, traverses a sequence of optical elements. To quantify the energy of the pump light, a calibrated laser energy meter (Coherent Field Max II equipped with a J-10MB-HE sensor) was employed. The lasing signal, coming from the Edge of the sample was efficiently collected using an optical fiber and subsequently analyzed using a high-resolution spectrometer (Shamrock 163) with a spectral resolution of 0.1 nm.Pumping energy calibration was carried out by noting the averaged energy of 100 laser pulses of pumping laser with respect to the azimuth angle of the half-wave plate for several azimuths. The energy was measured using a FieldMaxII TOP (Coherent) laser power meter.
•THG results.tab contains the set of originally recorded Third Harmonic Generation (THG abbreviation) spectra, together with their references - silica and glass). For THG experiments, there has been used a picosecond pulsed Nd:YAG laser (EKSPLA, PL2250 Series)(pulse duration - 30 ps, a repetition frequency - 10 Hz) with the source of the fundamental wavelength of 1064 nm.The beam was controlled by an optical system. The stability and intensity of both the fundamental and measured beams were monitored in real-time on an oscilloscope. The laser beam energy was measured using a Coherent - Field Max II® power meter and was equal for the 100 µm.
(2025-12)
