Experimental and theoretical investigation of tunable picosecond pulse generation in longitudinally pumped dye laser generators and amplifiers

Abstract

Picosecond pulse generation in longitudinally pumped dye laser generators and amplifiers is studied experimentally and theoretically. Frequency-tunable pulses between 720 and 940 nm are generated with a picosecond ruby laser pump source. The amplification of spontaneous emission and of seeding pulses in the generator and amplifier cells is investigated. Stimulated emission cross-sections and excited-state absorption cross-sections are determined by computer simulations. The coherence properties of the generated radiation are analysed. Resonance Raman contributions are resolved.

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 ].…”

Magneto-optics enhancement with gain-assisted plasmonic subdiffraction chains

“…For organic dye molecules, which may serve as the gain medium, the typical value of parameter  is 14 s 10    . 48 Background permittivity of the gain medium is set to 0 4   and its emission frequency is tuned to the narrow propagation band of SDC. The radii of core-shell NP are 1 Following the same procedure as in Section 3, we find the dispersion law of guided modes in the tight-binding approximation:…”