Lasing capacity of vapor-state pyrenes

Lasing of Vapours of Complex Organic Compounds

“…According to the literature, more than 200 organic compounds have been examined for the existence of laser action in the gas phase; of these more than 70 were found to exhibit the phenomenon [1,4,5,[24][25][26][27][28][29][30][31][32][33][34][35][36][37][38]. Pumping was carried out by several different means: with second-harmonic radiation from a ruby laser (Ap = 347 nm) or a nitrogen laser (337 nm), with the third and fourth harmonics from a neodymium laser (357 and 266nm), and the radiation (308 and 248nm) from an excimer laser.…”