Two-photon polymerization allows microfabrication of structures, of single features smaller than 1um. Cone has size of 100um.

Polymerization of planar structures, that present formation of holographic patterns. The 300x300um structure generates PWr hologram.

TPP was used for fabrication of optical resonator containing DCNP fluorescent dye.

One-photon polymerization can be used for optical rezonators fabrication.

Stabilized oil droplets suspended in water can be used as optical resonators with excellent emission properties.

Cyclodextrins can facilitate the formation of dye aggregates which, when stabilized, can emit laser light. More at: https://doi.org/10.1016/j.orgel.2020.105888

Gold nanoparticles enhance the laser emission, but I have to be close to the dye. Liposomes can help with this. More at: https://doi.org/10.3390/nano8121051

Optical solitons can "feel" each other. More at: https://doi.org/10.1364/OL.44.000267