[2.2] (2,7)Naphthalenoparacyclophanes

Tm-doped alkaline earth aluminate glass for optical amplification at 1460nm

“…These glasses have long been known for their extended transmission in the IR to 5-6 lm [7,8]. Consistent with this observation, the highest frequency band in the Raman spectrum of binary Ca aluminate glass is about 780 cm À1 [9].…”

“…Consistent with this observation, the highest frequency band in the Raman spectrum of binary Ca aluminate glass is about 780 cm À1 [9]. These glasses also have the desired transparency throughout the entire visible portion of the spectrum [7]. Furthermore, certain compositions have been shown to have sufficient thermal stability to permit fiber fabrication [10].…”

“…4. The optimized CaBaMg aluminate composition of Davy also lies within this region [7]. We ascribe the stabilizing effects of MgO to a combination of freezing point depression as well as the appearance of spinel (MgAl 2 O4) as an additional crystallizing phase.…”

“…However, as the latter also requires that the glass be fabricated as optical fibers, the well known tendency of aluminate glasses to crystallize during forming is a matter of concern [7,8]. This was the reason for the selection of the CaO-BaO-Al 2 O 3 as the base system for this study and for our secondary focus on thermal properties.…”

Characterization of thermo-optical and mechanical properties of calcium aluminosilicate glasses

“…The LSCAS basic composition was used as reference sample since this glass is already well known in the literature [10][11][12][13][14]. Fig.…”