Intense ultrashort pulse generation in a two-photon pumped generator-amplifier system

Singlet excited-state absorption of eosin Y

“…The use of eosin Y in methanol as a laser medium may be restricted to short pump pulse excitation (ps to ns) and subpicosecond to subnanosecond laser pulse generation [35] like travelling-wave amplified spontaneous emission lasers [33,[35][36][37][38][39][40], distributed feedback lasers [41,42], quenched cavity lasers [43,44], spectro-temporal selection lasers [45,46], or short cavity lasers [46][47][48][49][50], because of the large quantum yield of triplet state formation [32].…”

Absorption and emission spectroscopic investigation of cyanovinyldiethylaniline dye vapors

“…In this paper thermodynamic and spectroscopic parameters of the styryl dyes taneous emission [25,26] maybe possible by femtosecond pulse excitation [27 ].…”

Multiphoton Absorbing Materials: Molecular Designs, Characterizations, and Applications

“…In practice, the earliest two-photon pumped (2PP) lasing was observed during the 1960s−1970s in several semiconductor crystals operating at low temperature. − Also, there were a few papers reporting two-photon excited stimulated emission in gas and metal vapor systems during the 1970s−1990s. − On the other hand, between the 1970s and 1993, there were several experimental reports on two-photon excited stimulated emission for commercial organic dye systems. − In these cases with no cavity enhancement, most of the observed output was the so-called amplified spontaneous emission (ASE) that usually was only characterized by spectral narrowing, not by high directionality. In 1995, He et al reported 2PP cavity lasing with a narrow spectral line width and high directionality for solutions of a novel dye and for doped solid matrixes …”

“…[385][386][387][388][389][390] On the other hand, between the 1970s and 1993, there were several experimental reports on two-photon excited stimulated emission for commercial organic dye systems. [391][392][393][394][395][396][397][398] In these cases with no cavity enhancement, most of the observed output was the so-called amplified spontaneous emission (ASE) that usually was only characterized by spectral narrowing, not by high directionality. In 1995, He et al reported 2PP cavity lasing with a narrow spectral line width and high directionality for solutions of a novel dye and for doped solid matrixes.…”