Poling optimization and optical loss measurement of the polyetherketone polymer films

The facile synthesis and optical nonlinearity of hyperbranched polyaspartimides with azobenzene dyes

“…The uniform void-rich topological structure of hyperbranched polymers might possibly help to minimize the optical losses [18,19]. Further optimization of materials and processing conditions is expected to minimize the optical losses of the polymers [44,45,62]. In this particular area, direct introduction of fluorine atoms to azobenzene dyes and polyaspartimides structures seems to provide lower optical losses [63].…”

“…Optical loss measurement [43][44][45] For the optical loss measurement, a laser beam (830 nm) passed through a linear polarizer and a polarizing beam splitter. Subsequently, the TE polarized light was focused onto a prism coupler that was mounted on a rotation stage.…”

Nonlinear optical, poly(amide-imide)–clay nanocomposites comprising an azobenzene moiety synthesised via sequential self-repetitive reaction

“…As shown in Table 1, the optical losses of these NLO-active poly(amide-imide)-clay nanocomposite-based polymer waveguides are in the range 5.1-5.6 dB/cm and 3.4-3.9 dB/cm at 830 and 1310 nm, respectively. The number density of C-H, O-H and N-H bonds in the intrinsic structures plays a key role in deciding the optical loss of materials [38,39]. All of the NLO-active poly(amide-imide)s/inorganic clay nanocomposites exhibited the similar optical loss values.…”

Electric Poling and Relaxation Studies of PMMA Thin Films Containing Diaminopyrazole Derivatives as Dipolar Chromophores

“…However, the most common and widely used approach is to incorporate dipolar chromophore into suitable polymer host by simply dissolving the chromophore in a polymeric matrix i.e. guest-host (GH) system [9][10][11][12][13][14][15][16][17][18]. GH-systems offer several advantages including use of wide variety of dipolar chromophores and polymeric matrices, ease of processing into thin films, wide range of operating frequencies, etc.…”