NIR luminescence from Er3+/Yb3+, Tm3+/Yb3+, Er3+/Tm3+ and Nd3+ ions-doped zincborotellurite glasses for optical amplification

NIR luminescence from Er–Yb, Bi–Yb and Bi–Nd codoped germanate glasses for optical amplification

“…The large spectral overlap between Yb 3+ emission and Er 3+ absorption result in an efficient Yb 3+ → Er 3+ energy transfer in Er 3+ -Yb 3+ codoped materials. One of the interesting RE ions is Nd 3+ , whose lasing and light amplification in the glass hosts has been known since many years [6,7]. Neodymiumglass lasers are employed to produce ignition in nuclear fusion research; high-power lasers have found numerous applications in materials processing, and femtosecond mode-locked lasers have recently become commercially available.…”

Numerical Simulation of 980 nm-LD-Pumped Yb3+-Er3+-Tm3+-Codoped Fiber Amplifier for 1500 nm and 1600 nm Bands

“…The upconversion and energy transfer in Yb 3+ -Er 3+ -Tm 3+ -and Er 3+ -Tm 3+ -codoped glasses were reported [15]. Energy transfer and upconversion luminescence of Bismuth, Tm 3+ /Ho 3+ , Tb 3+ /Yb 3+ , Er 3+ /Tm 3+ /Yb 3+ -codoped inorganic materials for display systems were reported [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. In our previous works [31,32], we presented the numerical model of Er 3+ -Tm 3+ codoped telluride fiber amplifier pumped at 800 nm and calculated the dependence of the gains at 1470 nm and 1530 nm bands on the fiber parameters, and analyzed the transmission performance of the WDM system based on the codoped amplifier.…”

Optimizing Nd/Er ratio for enhancement of broadband near-infrared emission and energy transfer in the Er3+–Nd3+ co-doped transparent silicate glass-ceramics

“…Therefore, expanding the gain broadband in the wavelength ranges from 1000 to 1600 nm of fiber amplifiers with the role of rare earth (RE) ions has also been under continuous research and development in recent decades [1][2][3]. Among the RE ions, the nearinfrared (NIR) emission bands centered at 1.06 and 1.3 μm corresponding to 4 F 3/2 → 4 I 11/2 and 4 F 3/2 → 4 I 13/2 transitions of Nd 3+ ions under excitation 808 nm are of high importance for applications in the optical window of solar cells [4] and optical telecommunication [5,6]. Meanwhile, the NIR emission of Er 3+ -doped can be used for signal amplification at a wavelength of 1.55 μm corresponding to 4 I 13/2 → 4 I 15/2 transition in the telecommunication window [7][8][9].…”