Spectroscopic properties, concentration quenching, and laser investigations of Yb^3+-doped calcium aluminosilicate glasses

Emission tunability and local environment in europium-doped OH−-free calcium aluminosilicate glasses for artificial lighting applications

“…Annealing was then performed by returning the crucible to the melting position, where the temperature was around 800 C, and allowing it cool to room temperature, while maintaining the vacuum. This procedure took about 5 h. Further details of the preparation process can be found elsewhere [15,18]. The glass samples presented good optical quality, with no evidence of crystallization.…”

Tunable light emission and similarities with garnet structure of Ce-doped LSCAS glass for white-light devices

“…When co-doped with Er 3+ /Yb 3+ , it presents high emission rates in the mid infrared, near 2.8 m [15]. Additionally, laser emission at 1.07 and 1.37 m were observed when this glass was doped with Nd 3+ [16] and Yb 3+ [17]. More recently, a long lifetime (∼2.0 ms at 77 K and 170 s at room temperature) and a broad emission band of 190 nm (4237 cm −1 ) centered at 637 nm (15698 cm −1 ) were found in a Ti 3+ -doped LSCAS glass [18], which also shows high values of both gain cross section (∼4.7 × 10 −19 cm 2 ) and luminescence quantum efficiency (∼70%) [19] comparable to the values for Ti 3+ :sapphire crystals.…”

Spectroscopic investigation and heat generation of Yb^3+/Ho^3+ codoped aluminosilicate glasses looking for the emission at 2 μm

“…It is well known that Yb 3 sensitized samples present a very efficient energy transfer (ET) mechanism with very low intrinsic thermal losses [24] and a quantum efficiency close to one [25,26]. Another great advantage is that such systems can be easily pumped by diode lasers operating around 0.976 μm, which are available commercially and can be operated at high output power.…”

“…For these reasons we have sufficiently explored this matrix doped with several ions for the most diverse applications. Recently laser emissions at 1077 nm [32] and 1037 nm [26], respectively, from Nd 3 -and Yb 3 -doped LSCAS were obtained. This matrix has also been explored with other ions besides rare earths, such as titanium, and interesting results were recently reported [33].…”