Perylene Dye In A Composite Sol-Gel Glass - A New Solid-State Tunable Laser In The Visible Range

Effect of Substituents at Imide Positions on the Laser Performance of 1,7-Bay-Substituted Perylenediimide Dyes

“…The extinction coefficient (ε) was determined from the absorbance (A) using the expression ε = A/l•C, with l the light path length of the sample and C the dye concentration. For films, the absorption coefficient (α) was calculated through the expression α = ln (10)•A/h f , where h f is the film thickness.…”

“…Perylenediimides (PDIs) have been widely investigated as laser materials. In early works, PDI derivatives were studied in liquid solution as active materials for dye lasers. , Soon after, PDIs were dispersed in polymer matrixes in monolithic form, pursuing improvements in compactness and maintenance. , However, these solid-state lasers still showed the high operational energy requirements of their predecessors and resulted in additional photostability issues. In the literature, different synthetic strategies have been developed to improve the properties of PDIs toward lowering the optical pump energy needed ( i.e ., the threshold) for amplified spontaneous emission (ASE) and laser operation, and to tune the emission wavelength of PDIs.…”

Novel, Organically Doped, Sol-Gel-Derived Materials for Photonics: Multiphasic Nanostructured Composite Monoliths and Optical Fibers

“…Composite glasses prepared via the sol-gel technique are of high optical quality 12 and large monolithic bulk forms can be made for various photonic functions, such as lasing, 21,22,40 optical power limitation, 41,42 nonlinear optical response 43 etc. An advanced approach is to form multiphasic nanostructured composites.…”

“…In both cases photostability is a property of prime importance for selecting a laser dye. 75 In recent years lasing from dye-doped solid matrices has been demonstrated by several groups via a one-photon excitation process 21,22,[76][77][78][79][80] and even via a two-photon excitation process. 45,46 Excellent slope efficiencies (up to 39%) and lifetimes of sol-gel-processed solid-state dye lasers have been reported and it has been observed that ORMOSILs can exhibit longer lifetimes than in the solution state.…”

“…Solgel processed materials have been used in areas ranging from novel solid-state lasers to platforms for chemical sensors and biosensors. [15][16][17][18][19][20][21][22] Also, the sol-gel technique has been used to fabricate nonlinear optically active composites for applications in optical telecommunications. 5 Organically modified and sol-gel-processed materials have also been shown to exhibit excellent nonlinear optical (2) and (3) properties.…”