Although the variable stripe length (VSL) method has been widely used to measure the
optical gain in thin film active media, different nor totally rigorous criteria have yet been used …

The characteristics of amplified spontaneous emission (ASE) from asymmetric planar
waveguides and quasi-waveguides consisting of thin films of poly (methyl methacrylate) …

Phosphorescent emissions at room temperature from solid-state self sustained film
fabricated using phenazine derivative molecules blended in a solution of poly (methyl …

Underwater optical wireless communications (UOWC) systems have recently received
significant attention as an attractive solution for both research and commercial use because …

We investigated the excitation density dependence of the photoluminescence spectra of
hybrid poly (9, 9-dioctylfluorene)-CdSe/ZnS nanocrystals (PF8-NCs) thin films. We …

The waveguide properties of high quantum efficiency thin film of poly (9, 9-dioctyl-fluorene-2,
7-diyl) conjugated polymer has been studied at room temperature. The analysis of the …

A method based on the unidimensional gain equation has been developed in order to fit the
experimental data due to amplification of spontaneous emission in a thin film of conjugated …

Near-infrared optical gain in luminescent polymeric slab asymmetric waveguides has been
investigated by use of amplified spontaneous emission. Upon nanosecond photopumping …

A near-infrared-emitting microlaser has been demonstrated, which is based on a
semiconducting non-conjugated polymer. A luminescent polymer layer is formed on a silica …

Three indicators for the determination of the saturation length limiting the validity of the
variable stripe length method are presented. Depending on the maximum stripe length …