Raman oscillation on a new vibrational mode setup in phosphosilicate binary glass systems

Abstract

Abstract:We demonstrate Raman oscillation at a wavelength of 1158 nm using a new vibrational mode in a phosphosilicate-glass system when pumped at a 1060-nm wavelength. The lower energy P-O vibration located at 640 cm -1 associated with pure phosphate glass system is comparatively weaker and is shifted to higher energy at 800 cm -1 in the phosphosilicate binary glass. Despite the relative weakness of this vibrational mode, we obtained an efficient Raman fiber laser with the use of fiber Bragg gratings used to select laser oscillation using this mode. The measured slope efficiency with respect to the launched pump power was 60.4% and a maximum laser power of 1.8 W was produced. and E. V. Pershina, "Efficient silica-based Ho 3+ fibre laser for 2 µm spectral region pumped at 1.15 µm,"

CdSe/ZnS-doped silicophosphate films prepared by sol–gel method

“…It can be seen that the spectra are quite similar with the exception of 795 cm -1 band specific to (P-O-P) symmetric stretching vibration mode [21,22] found also in the film (TPTCdSe). At 230 cm -1 , an optical Raman band specific to cadmium selenide bond is found, as presented in [23,24], related to longitudinal optical phonon (LO) of [25][26][27]. Raman spectrum of TPTCdSe film deposited on silicon substrate presented in the Fig.…”

Ionic Conductivity of Na3Al2P3O12 Glass Electrolytes—Role of Charge Compensators

“…This is also validated by the MD simulation results and can be related to the fact that the addition of Si into the Si0 glass results in the formation of Si−O−Al bonds by utilizing Na + ions as charge compensators. The peak 2 (at 423 cm −1 for Si0) represents the bending vibrations of O−Al−O bonds 55,56 and shifts toward a higher frequency region with a noticeable increase in intensity. The symmetric stretching vibrations of Si−O−Si bonds in Q 4 -type structural units exhibit a vibrational band around ∼450 cm −1 .…”