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High Optical Gain in Erbium-Doped Potassium Double Tungstate Channel Waveguide Amplifiers

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

Opt Express. 2018 Mar 5;26(5):6260-6266.

PMID: 29529817

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP7790605	Potassium tungstate		7790-60-5	Price

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