Effects of yttrium codoping on fluorescence lifetimes of Er3+ ions in SiO2–Al2O3 sol–gel glasses

Erbium‐doped integrated waveguide amplifiers and lasers

“…These include silicate glass [32,[114][115][116][117], phosphate glass [39,81,[118][119][120][121][122][123][124], fluoride glass [125], and amorphous aluminum oxide [36,[126][127][128][129]. In addition, multi-component oxide glasses [38,[130][131][132][133][134][135][136][137][138][139][140][141][142][143][144][145] offer the possibility to tailor various properties such as the gain spectrum and the refractive index. Glass hosts have relatively low refractive indices, which are closely matched to those of standard optical fibers.…”

Effect of Y3+ codoping on luminescence decays of the 4I13/2 level in Er3+-doped Al2O3 powders prepared by a sol-gel method

“…In the Er 3+ -doped Al 2 O 3 powders prepared by a sol-gel process, concentration quenching was observed as the Er 3+ doping concentration is increased to 0.5 mol.% [10]. Y 3+ codoping into the different hosts in the sol-gel process is effective in reducing the concentration quenching effect [11,12]. Nga et al [12] reported that Y 3+ codoping produces a considerable increase in the luminescence lifetime of 4 I 13/2 level of Er 3+ leading to strong PL emission in Er 3+ -doped SiO 2 -Al 2 O 3 glasses.…”

“…Y 3+ codoping into the different hosts in the sol-gel process is effective in reducing the concentration quenching effect [11,12]. Nga et al [12] reported that Y 3+ codoping produces a considerable increase in the luminescence lifetime of 4 I 13/2 level of Er 3+ leading to strong PL emission in Er 3+ -doped SiO 2 -Al 2 O 3 glasses. The mechanism of prolonging luminescence lifetime of Er 3+ in Al 2 O 3 by Y 3+ codoping is not clear although enhanced PL intensity of the Er 3+ -Y 3+ -codoped oxides was observed [11,12].…”

“…Nga et al [12] reported that Y 3+ codoping produces a considerable increase in the luminescence lifetime of 4 I 13/2 level of Er 3+ leading to strong PL emission in Er 3+ -doped SiO 2 -Al 2 O 3 glasses. The mechanism of prolonging luminescence lifetime of Er 3+ in Al 2 O 3 by Y 3+ codoping is not clear although enhanced PL intensity of the Er 3+ -Y 3+ -codoped oxides was observed [11,12]. In this paper, we present experimental measurements of the luminescence lifetime of Er 3+ in the 0.01 mol.%-0.1 mol.% Er 3+ -doped Al 2 O 3 powders by 0-20 mol.% Y 3+ codoping sintered at 900uC and prepared by a non-aqueous sol-gel method.…”

AI2O3:Er3+ as a gain platform for integrated optics

“…Because of these advantages, and the success of Er-doped glass fiber amplifiers and lasers, many glass host materials have been investigated for active planar devices. These include silica [18][19][20][21][22], phosphate glass [23][24][25][26][27][28][29][30][31][32], fluoride glass [33], aluminum oxide [34][35][36][37][38] and numerous multi-component glasses [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57]. Glass hosts have relatively low refractive indices, which are closely matched to those of standard optical fibers.…”