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)

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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.

Original languageEnglish
Pages (from-to)6260-6266
Number of pages7
JournalOptics express
Volume26
Issue number5
DOIs
Publication statusPublished - 5 Mar 2018

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tungstates
erbium
potassium
amplifiers
waveguides
pumps
liquid phase epitaxy
wavelengths
augmentation
probes

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Vázquez-Córdova, Sergio A. ; Aravazhi, Shanmugam ; Grivas, Christos ; Yong, Yean Sheng ; García-Blanco, Sonia M. ; Herek, Jennifer L. ; Pollnau, Markus. / High optical gain in erbium-doped potassium double tungstate channel waveguide amplifiers. In: Optics express. 2018 ; Vol. 26, No. 5. pp. 6260-6266.
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High optical gain in erbium-doped potassium double tungstate channel waveguide amplifiers. / Vázquez-Córdova, Sergio A.; Aravazhi, Shanmugam; Grivas, Christos; Yong, Yean Sheng; García-Blanco, Sonia M.; Herek, Jennifer L.; Pollnau, Markus (Corresponding Author).

In: Optics express, Vol. 26, No. 5, 05.03.2018, p. 6260-6266.

Research output: Contribution to journalArticleAcademicpeer-review

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