High optical gain in erbium-doped potassium double tungstate channel waveguide amplifiers

Sergio A. Vázquez-Córdova; Shanmugam Aravazhi; Christos Grivas; Yean Sheng Yong; Sonia M. García-Blanco; Jennifer L. Herek; Markus Pollnau

doi:10.1364/OE.26.006260

High optical gain in erbium-doped potassium double tungstate channel waveguide amplifiers

Sergio A. Vázquez-Córdova, Shanmugam Aravazhi, Christos Grivas, Yean Sheng Yong, Sonia M. García-Blanco, Jennifer L. Herek, Markus Pollnau^* (Corresponding Author)

^*Corresponding author for this work

Optical Sciences

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Abstract

We report on the optical-gain properties of channel waveguides patterned into lattice-matched KGd_xLu_yEr_1-x-_y(WO₄)₂ layers grown onto undoped KY(WO₄)₂ substrates by liquid phase epitaxy. A systematic investigation of gain is performed for five different Er³⁺ concentrations in the range of 0.75 to 10at.% and different pump powers and signal wavelengths. In pump-probe-beam experiments, relative internal gain, i.e., signal enhancement minus absorption loss of light propagating in the channel waveguide, is experimentally demonstrated, with a maximum value of 12 ± 5 dB/cm for signals at the peak-emission wavelength of 1534.7 nm.

Original language	English
Pages (from-to)	6260-6266
Number of pages	7
Journal	Optics express
Volume	26
Issue number	5
DOIs	https://doi.org/10.1364/OE.26.006260
Publication status	Published - 5 Mar 2018

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Vázquez-Córdova2018highFinal published version, 2.41 MBLicence: CC BY

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title = "High optical gain in erbium-doped potassium double tungstate channel waveguide amplifiers",

abstract = "We report on the optical-gain properties of channel waveguides patterned into lattice-matched KGdxLuyEr1-x-y(WO4)2 layers grown onto undoped KY(WO4)2 substrates by liquid phase epitaxy. A systematic investigation of gain is performed for five different Er3+ concentrations in the range of 0.75 to 10at.% and different pump powers and signal wavelengths. In pump-probe-beam experiments, relative internal gain, i.e., signal enhancement minus absorption loss of light propagating in the channel waveguide, is experimentally demonstrated, with a maximum value of 12 ± 5 dB/cm for signals at the peak-emission wavelength of 1534.7 nm.",

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AU - Vázquez-Córdova, Sergio A.

AU - Aravazhi, Shanmugam

AU - Grivas, Christos

AU - Yong, Yean Sheng

AU - García-Blanco, Sonia M.

AU - Herek, Jennifer L.

AU - Pollnau, Markus

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AB - We report on the optical-gain properties of channel waveguides patterned into lattice-matched KGdxLuyEr1-x-y(WO4)2 layers grown onto undoped KY(WO4)2 substrates by liquid phase epitaxy. A systematic investigation of gain is performed for five different Er3+ concentrations in the range of 0.75 to 10at.% and different pump powers and signal wavelengths. In pump-probe-beam experiments, relative internal gain, i.e., signal enhancement minus absorption loss of light propagating in the channel waveguide, is experimentally demonstrated, with a maximum value of 12 ± 5 dB/cm for signals at the peak-emission wavelength of 1534.7 nm.

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High optical gain in erbium-doped potassium double tungstate channel waveguide amplifiers

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