Lasing threshold of one- and two-photon-pumped dye-doped silica powder

Tunable wavelength light emission and amplification in Rhodamine 6G aggregates

“…Recently, it was shown that starch can act as an biopolymeric matrix for RL action, with a significant increase of photostability comparing to the other biopolymeric matrices, what is caused by low oxygen permeability through starch layer. 27 Here, the authors show that also in this novel lasing matrix, the dye concentration plays an important role in tuning of the RL emission wavelength. For the sake of comparison, Rhodamine-doped starch layers were prepared, varying the dye concentration from 0.5 up to 2.0% (w/w).…”

“…19 -25 Some recent works concerning Rh6G are showing further interest in RL especially in optimization of the acquired process in systems coupled with CdSe nanoparticles, showing enhanced RL process, as well as in Rh6G-doped silica gels pumped as one-and two-photon process. 26,27 The other works are concerning Rhodamine-doped biologically derivative systems for enhance fluorescence observation. 28 Ease of handling, water and organic solvent solubility, highquality factor are responsible for such popularity of Rh6G in the light amplification systems.…”

Recent progress and prospects of random lasers using advanced materials

“…Fluorescent colloidal silica NPs are widely used for diagnostics, and therapeutic applications, particularly cancer detection and drug delivery. 176,177 Van Duong Ta et al showed effective random lasing from microslices comprising dye-doped colloidal silica NPs synthesized using the self-assembly method. 74 In addition, they demonstrated the notion of an RL proficiently operating in the porcine skin tissue (Fig.…”