E-viri
Recenzirano
Odprti dostop
-
Morris, Stephen M.; Qasim, Malik M.; Gardiner, Damian J.; Hands, Philip J.W.; Castles, Flynn; Tu, Gouli; Huck, Wilhelm T.S.; Friend, Richard H.; Coles, Harry J.
Optical materials, 03/2013, Letnik: 35, Številka: 5Journal Article
► Liquid crystalline chromophores have been synthesized for photonic band-edge laser devices. ► These are bimesogenic compounds consisting of the repeating unit from the semiconducting polymer, CNPPV. ► Single mode laser emission was observed in chiral nematic samples doped with the chromophores up to a concentration of 10wt.%. ► The excitation threshold is found to increase with the concentration of the chromophore. We present results on laser action from liquid crystal compounds whereby one sub-unit of the molecular structure consists of the cyano-substituted chromophore, {phenylene-bis (2-cyanopropene)}, similar to the basic unit of the semiconducting polymer structure poly(cyanoterephthalylidene). These compounds were found to exhibit nematic liquid crystal phases. In addition, by virtue of the liquid crystalline properties, the compounds were found to be highly miscible in wide temperature range commercial nematogen mixtures. When optically excited at λ=355nm, laser emission was observed in the blue/green region of the visible spectrum (480–530nm) and at larger concentrations by weight than is achievable using conventional laser dyes. Upon increasing the concentration of dye from 2 to 5wt.% the threshold was found to increase from Eth=0.42±0.02μJ/pulse (≈20mJ/cm2) to Eth=0.66±0.03μJ/pulse (≈34mJ/cm2). Laser emission was also observed at concentrations of 10wt.% but was less stable than that observed for lower concentrations of the chromophore.
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.