Growth of rare-earth doped single crystal yttrium aluminum garnet fibers using laser heated pedestal growth technique

Author(s):  
Subhabrata Bera ◽  
Long Cheng ◽  
Stephen C. Rand ◽  
Yuan Li ◽  
Eric G. Johnson ◽  
...  
2014 ◽  
Author(s):  
Craig D. Nie ◽  
James A. Harrington ◽  
Yuan Li ◽  
Eric G. Johnson ◽  
Elizabeth F. Cloos ◽  
...  

Author(s):  
Craig D. Nie ◽  
Yuan Li ◽  
Elizabeth Cloos ◽  
Eric G. Johnson ◽  
Stephen C. Rand ◽  
...  

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 644
Author(s):  
Syed N. Qadri ◽  
Woohong Kim ◽  
Shyam Bayya ◽  
Brandon Shaw ◽  
Syed B. Qadri ◽  
...  

We report the latest progress on fabrication of rare earth doped single crystal yttrium aluminum garnet (YAG) core/undoped YAG cladded fibers. Rare-earth doped single crystal core fibers were grown with laser heated pedestal growth methods. In a second step, epitaxial methods were used to grow a single crystalline undoped YAG cladding onto the core fiber. Hydrothermal and liquid phase epitaxy methods utilize the core doped fiber as the seed. X-ray diffraction of cladding reveals an equilibrium (110) morphology. Energy-dispersive X-ray spectroscopy analysis shows there is minimal diffusion of rare-earth dopants into the cladding structure. The use of scandium doping is shown to substitute at the Al3+ site, thereby allowing an additional tunability of refractive index of core structure material besides conventional Y3+ site dopants. The use of these epitaxial growth methods enables material compatibility, tuning of refractive index, and conformal growth of cladding structures onto core fibers for optical devices.


2001 ◽  
Vol 22 (7) ◽  
pp. 591-599 ◽  
Author(s):  
Donald L. Chubb ◽  
AnnaMaria T. Pal ◽  
Martin O. Patton ◽  
Phillip P. Jenkins

2011 ◽  
Vol 318 (1) ◽  
pp. 674-678 ◽  
Author(s):  
Chun-Lin Chang ◽  
Sheng-Lung Huang ◽  
Chia-Yao Lo ◽  
Kuang-Yao Huang ◽  
Chung-Wen Lan ◽  
...  

2019 ◽  
Vol 61 (5) ◽  
pp. 848
Author(s):  
У.В. Валиев ◽  
Gary W. Burdick ◽  
Р.Р. Вильданов ◽  
R.Yu. Rakhimov ◽  
Dejun Fu

AbstractThe spectra of luminescence and magnetic circular polarization of luminescence of praseodymium–yttrium aluminum garnet Pr^3+ : Y_3Al_5O_12 (PrYAG) are studied in the visible spectral region at temperature T = 300 K. An analysis of spectral dependences of magnetooptical and optical spectra makes it possible to identify optical 4  f –4  f -transitions between Stark sublevels of multiplets ^3 P _0, ^3 P _1, ^3 Н _5, and ^3 Н _6 in PrYAG. It was shown that an important role in the spectrum of the degree of magnetic circular polarization of luminescence of this paramagnetic garnet is played by the effect of quantum-mechanical J – J mixing of states of Stark singlets ^3 Н _5 and ^3 Н _6 of non-Kramer rare-earth ion Pr^3+ in the “green” luminescence band related to forbidden 4  f → 4  f transition ^3 P _0 → ^3 Н _5 in the visible spectral region. To interpret the spectra of magnetic circular polarization of luminescence, the energy of experimentally determined Stark sublevels of multiplets under study, their irreducible representations and wave functions determined by numerical simulation of the energy spectrum of the rare-earth ion Pr^3+ in the garnet structure are used.


1971 ◽  
Vol 26 (25) ◽  
pp. 1570-1573 ◽  
Author(s):  
R. Wolfe ◽  
M. D. Sturge ◽  
F. R. Merritt ◽  
L. G. Van Uitert

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