Raman band intensities of tellurite glasses

Abstract

Raman spectra of TeO2-based glasses doped with WO3, ZnO, GeO2, TiO2, MoO3, and Sb2O3 are measured. The intensity of bands in the Raman spectra of MoO3-TeO2 and MoO3-WO3-TeO2 glasses is shown to be 80-95 times higher than that for silica glass. It is shown that these glasses can be considered as one of the most promising materials for Raman fiber amplifiers.

Complex Faraday Rotation in Microstructured Magneto‐optical Fiber Waveguides

“…), the MO fi bers were examined using scanning-electron microscopy and energy-dispersive X-ray spectroscopy (cross-section) and micro-Raman scattering (side-view, see pyramids ( ~ 805 cm − 1 ). [53][54][55][56] To study the MO response of the fi ber and to compare it with bulk glass (which gives a much-stronger output signal), the monochromator was replaced with a narrow-band fi lter. Careful optical alignment is necessary to ensure that only the fundamental mode of the core is excited, since the waveguide core is relatively large and therefore is multimodal (number of modes in the visible range > 1000).…”

1.06 $\mu$m Picosecond Pulsed, Normal Dispersion Pumping for Generating Efficient Broadband Infrared Supercontinuum in Meter-Length Single-Mode Tellurite Holey Fiber With High Raman Gain Coefficient

“…The reduced Raman intensity spectrum exhibits a line-shape which is close to that of stimulated Raman scattering [12]. In order to evaluate the Raman gain coefficient of the tellurite glass, the reduced Raman intensity is normalized by the peak Raman intensity of pure silica glass at 440cm -1 .…”

“…The Raman spectra were recorded from 200cm -1 to 1000cm -1 with a resolution of 1cm -1 . The reduced Raman intensity spectra were obtained by dividing the spontaneous Raman spectra by the thermal population factor of (1+n b ), where n b is the Bose-Einstein thermal factor [11,12] (…”

“…We calculated the F factor using the method presented in Ref. [12]. Table 1 shows the Raman gain coefficient of TZN glass for pump wavelengths of 633nm and 1060nm, respectively.…”

Upconversion and color tunability in Tm3+/Ho3+/Yb3+ doped low phonon energy bismuth tellurite glasses

“…The white color luminescence is realized in Er 3 + , Pr 3 + , Tm 3 + , Ho 3 + and Yb 3 + doubly or triply doped glasses [24,25]. Among them, tellurite glass system has shown to be a suitable host for upconversion multicolor and white light luminescence because of its high solubility for rare earth ions, low phonon energies and excellent glass stability [26][27][28][29][30][31]. Based on the previous researches [32,33], it is also known that the upconversion white fluorescence is the function of not only the host material but also the rare earth ions concentration.…”