Efficient 2.7 micron emission from Er3+/Pr3+ codoped oxyfluorotellurite glass

Enhanced 2.7 μm emission from Er3+ doped oxyfluoride tellurite glasses for a diode-pump mid-infrared laser

“…19 Actually, N OH − for TZF30-Ar (3.028 × 10 18 cm −3 ) is approximately 13 times smaller than the value (39.602 × 10 18 cm −3 ) found in TZF0 glass. Besides, the minimal α OH − (0.247 cm −1 ) is much lower in comparison with other tellurite glasses reported before, 22,23 demonstrating that the simultaneous utilization of fluoride and shielding gas is a more effective method to extract OH − out of the mid-infrared laser glass during the fabrication process. 20,24 As is well known, the maximum peak position in the Raman spectrum stands for the largest phonon energy (hω max ) of the glass matrix.…”

Natural discharge after pulse and cooperative electrodes to enhance droplet velocity in digital microfluidics

“…Moreover, α OH − of TZF30-Ar is smaller than that of TZF30-O 2 , which suggests that the above reactions proceed more sufficiently in Ar atmosphere compared to O 2 atmosphere. 19 22,23 demonstrating that the simultaneous utilization of fluoride and shielding gas is a more effective method to extract OH − out of the mid-infrared laser glass during the fabrication process. 20,24 As is well known, the maximum peak position in the Raman spectrum stands for the largest phonon energy (hω max ) of the glass matrix.…”

Oxyfluorotellurite glasses doped by dysprosium ions. Thermal and optical properties

“…Oxyfluorotellurite glasses combine advantages of the two (fluoride and tellurite) glass systems and that is reason why they were subject of scientific and technological interest [1][2][3][4][5][6]. Due to their good thermal stability [1][2][3][4][5][6] and chemical durability [1][2][3][4][5], non hygroscopicity, high refractive index [1][2][3][4]6], low phonon energies [1][2][3]5,6], wide optical transmittance region [1,2,4], good transparency in the mid-infrared [3,5,6] and also high solubility for rare earth ions [3,6] oxyfluorotellurite glasses are good candidates for application and development of optoelectronics (colour displays), photonics (fibre amplifiers), telecommunications (fibreoptic communications, optical amplifiers) or laser techniques (solid-state lasers, laser fibres) [1][2][3][4][5][6].…”