Growth and lasing of single crystal YAG fibers with different Ho3+ concentrations

Subhabrata Bera; Craig D. Nie; Michael G. Soskind; Yuan Li; James A. Harrington; Eric G. Johnson

doi:10.1016/j.optmat.2017.09.048

Growth and lasing of single crystal YAG fibers with different Ho³⁺ concentrations

Subhabrata Bera, Craig D. Nie, Michael G. Soskind, Yuan Li, James A. Harrington, Eric G. Johnson

School of Engineering, Materials Science & Engineering

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

A method to grow single crystal (SC) yttrium aluminum garnet (YAG) fibers with varied rare-earth ion dopant concentration has been proposed. Crystalline holmium aluminum garnet (HoAG), prepared via sol-gel process, was dip-coated on to previously grown SC YAG fibers. The HoAG coated SC YAG fiber preforms were re-grown to a smaller diameter using the laser heated pedestal growth (LHPG) technique. The final dopant concentration of the re-grown SC fiber was varied by changing the number of HoAG coatings on the preform. 120 μm diameter SC Ho:YAG fibers with four different dopant concentrations were grown. Lasing was demonstrated at 2.09 μm for these fibers. A maximum of 58.5% optical-to-optical slope efficiency was obtained.

Original language	English (US)
Pages (from-to)	44-48
Number of pages	5
Journal	Optical Materials
Volume	75
DOIs	https://doi.org/10.1016/j.optmat.2017.09.048
State	Published - Jan 2018

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering
Spectroscopy
Inorganic Chemistry
Physical and Theoretical Chemistry
Organic Chemistry

Keywords

Fiber materials
Laser crystals
Rare-earth doped materials
Short wave IR laser
Sol-gel processing

Access to Document

10.1016/j.optmat.2017.09.048

Cite this

@article{51e48714a22c4df291d3100afe49f2d7,

title = "Growth and lasing of single crystal YAG fibers with different Ho3+ concentrations",

abstract = "A method to grow single crystal (SC) yttrium aluminum garnet (YAG) fibers with varied rare-earth ion dopant concentration has been proposed. Crystalline holmium aluminum garnet (HoAG), prepared via sol-gel process, was dip-coated on to previously grown SC YAG fibers. The HoAG coated SC YAG fiber preforms were re-grown to a smaller diameter using the laser heated pedestal growth (LHPG) technique. The final dopant concentration of the re-grown SC fiber was varied by changing the number of HoAG coatings on the preform. 120 μm diameter SC Ho:YAG fibers with four different dopant concentrations were grown. Lasing was demonstrated at 2.09 μm for these fibers. A maximum of 58.5% optical-to-optical slope efficiency was obtained.",

keywords = "Fiber materials, Laser crystals, Rare-earth doped materials, Short wave IR laser, Sol-gel processing",

author = "Subhabrata Bera and Nie, {Craig D.} and Soskind, {Michael G.} and Yuan Li and Harrington, {James A.} and Johnson, {Eric G.}",

note = "Publisher Copyright: {\textcopyright} 2017",

year = "2018",

month = jan,

doi = "10.1016/j.optmat.2017.09.048",

language = "English (US)",

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T1 - Growth and lasing of single crystal YAG fibers with different Ho3+ concentrations

AU - Bera, Subhabrata

AU - Nie, Craig D.

AU - Soskind, Michael G.

AU - Li, Yuan

AU - Harrington, James A.

AU - Johnson, Eric G.

PY - 2018/1

Y1 - 2018/1

N2 - A method to grow single crystal (SC) yttrium aluminum garnet (YAG) fibers with varied rare-earth ion dopant concentration has been proposed. Crystalline holmium aluminum garnet (HoAG), prepared via sol-gel process, was dip-coated on to previously grown SC YAG fibers. The HoAG coated SC YAG fiber preforms were re-grown to a smaller diameter using the laser heated pedestal growth (LHPG) technique. The final dopant concentration of the re-grown SC fiber was varied by changing the number of HoAG coatings on the preform. 120 μm diameter SC Ho:YAG fibers with four different dopant concentrations were grown. Lasing was demonstrated at 2.09 μm for these fibers. A maximum of 58.5% optical-to-optical slope efficiency was obtained.

AB - A method to grow single crystal (SC) yttrium aluminum garnet (YAG) fibers with varied rare-earth ion dopant concentration has been proposed. Crystalline holmium aluminum garnet (HoAG), prepared via sol-gel process, was dip-coated on to previously grown SC YAG fibers. The HoAG coated SC YAG fiber preforms were re-grown to a smaller diameter using the laser heated pedestal growth (LHPG) technique. The final dopant concentration of the re-grown SC fiber was varied by changing the number of HoAG coatings on the preform. 120 μm diameter SC Ho:YAG fibers with four different dopant concentrations were grown. Lasing was demonstrated at 2.09 μm for these fibers. A maximum of 58.5% optical-to-optical slope efficiency was obtained.

KW - Fiber materials

KW - Laser crystals

KW - Rare-earth doped materials

KW - Short wave IR laser

KW - Sol-gel processing

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