Presentation + Paper
16 February 2017 Spectroscopy of erbium-doped potassium double tungstate waveguides
Sergio A. Vázquez-Córdova, Shanmugam Aravazhi, Christos Grivas, Alexander M. Heuer, Christian Kränkel, Yean-Sheng Yong, Sonia M. García-Blanco, Jennifer L. Herek, Markus Pollnau
Author Affiliations +
Abstract
We report the spectroscopy of crystalline waveguide amplifiers operating in the telecom C-band. Thin films of erbiumdoped gadolinium lutetium potassium double tungstate, KGdxLuyEr1-x-y (WO4)2, are grown by liquid- phase epitaxy onto undoped potassium yttrium double tungstate (KYW) substrates and micro-structured by Ar+- beam etching. Channel waveguides with erbium concentrations between 0.45–6.35 × 1020 cm-3 are characterized. The transition cross-sections of interest are estimated. The effect of energy-transfer up-conversion (ETU) is experimentally investigated. Microscopic and macroscopic ETU parameters are extracted from a simultaneous analysis of 20 decay curves of luminescence on the transition 4I13/24I13/2. The correlation between ETU and the doping concentration is studied. Pump excited-state absorption (ESA) on the transition 4I11/24F7/2 is investigated via a direct ESA measurement using a double-modulation pump-probe technique. The effect of ESA is studied for different pump wavelengths. The pump wavelength of 984.5 nm is found to be favorable for the complete range of erbium concentrations.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sergio A. Vázquez-Córdova, Shanmugam Aravazhi, Christos Grivas, Alexander M. Heuer, Christian Kränkel, Yean-Sheng Yong, Sonia M. García-Blanco, Jennifer L. Herek, and Markus Pollnau "Spectroscopy of erbium-doped potassium double tungstate waveguides", Proc. SPIE 10106, Integrated Optics: Devices, Materials, and Technologies XXI, 1010604 (16 February 2017); https://doi.org/10.1117/12.2252488
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Cited by 2 scholarly publications.
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KEYWORDS
Erbium

Waveguides

Optical amplifiers

Signal detection

Luminescence

Amplifiers

Crystals

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