SiO 2 -P 2 O 5 -HfO 2 -Al 2 O 3 -Na 2 O glasses activated by Er 3+ ions: From bulk sample to planar waveguide fabricated by rf-sputtering

Chiasera, Alessandro; Vasilchenko, Iustyna; Dorosz, Dominik; Cotti, M.; Varas, Stefano; Iacob, Erica; Speranza, G.; Vaccari, Alessandro; Valligatla, Sreeramulu; Żur, Lidia; Łukowiak, Anna; Righini, Giancarlo C.; Ferrari, Maurizio

doi:10.1016/j.optmat.2016.06.025

Cited by 14 publications

(3 citation statements)

References 18 publications

(23 reference statements)

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“…The PL peak exhibited a full width at half maximum (FWHM) of ≈70 nm; this was broader than the emission of Er 3+ ions in some inorganic hosts. For instance, the FWHM of Er 3+ ions in germanium silicate glass, phosphosilicate glass, and Al₂O₃ were ≈20, 30, and 52 nm, [ 7,30,31 ] respectively. This broadening was due to the coupling of the f‐f electronic transitions of the Er 3+ ions with the vibrational modes of the organic valence bonds.…”

Section: Experiments and Analysismentioning

confidence: 99%

Demonstration of Optical Gain at 1535 nm Based on Er^III Complex‐Doped Polymer Waveguides Under Light‐Emitting Diode Excitation

He,

Man,

Shi

et al. 2024

Advanced Optical Materials

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A near‐infrared luminescent complex Er(DBTTA)3(DBFDPO) [where DBTTA = dibenzotetrathienoacene; DBFDPO = 4,6‐bis (diphenylphosphoryl) dibenzofuran] is synthesized. Based on the intramolecular energy transfer between organic ligands and Er3+ ions, optical gains at 1535 nm are demonstrated in Er(DBTTA)3(DBFDPO)‐doped polymer waveguides under the excitation of light‐emitting diodes (LEDs) instead of laser pumping. Relative gains of 6.4, 8.2, and 10.6 dB are obtained in 1 cm long waveguides with cross‐sectional dimensions of 6 × 4, 4 × 4, and 2 × 3 µm2 respectively, using the vertical top‐pumping mode of a 365 nm LED with 462 mW. Incorporating an ≈100 nm thick aluminum reflector grown under the lower cladding, enhanced the optical gain to 11.6 dB cm−1 in a waveguide with a cross‐section of 4 × 4 µm2, and an internal gain of ≈7.4 dB cm−1 is achieved. By relying on the intramolecular energy transfer and LED top‐pumping technology, the upconversion luminescence of Er3+ ions and thermal damage to polymer waveguides caused by the high power density of laser pumping can be effectively reduced. The complex Er(DBTTA)3(DBFDPO)‐doped polymer can be spin‐coated on different types of waveguides to compensate for optical losses at 1.5 µm and is expected to have a critical role in planar photonic integration.

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Section: Experiments and Analysismentioning

confidence: 99%

Demonstration of Optical Gain at 1535 nm Based on Er^III Complex‐Doped Polymer Waveguides Under Light‐Emitting Diode Excitation

He,

Man,

Shi

et al. 2024

Advanced Optical Materials

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“…Chiasera et al [16] proposed SiO2-P2O5-HfO2-Al2O3-Na2O glasses activated by Er 3+ ions obtained by multitarget RF sputtering. In particular, they produced a GWG by sputtering a SiO2 target onto a disk of a 69P2O5-15SiO2-10Al2O3-5Na2O-1Er2O glass, and one of HfO2 was positioned.…”

Section: Waveguides In Glassesmentioning

confidence: 99%

Glass and Glass–Ceramic Photonic Materials for Sensors

Giardino

Pugliese

Janner

2021

PoliTO Springer Series

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Recent developments in sensors are pushing for optimized materials that can increase their usage, bolster their sensitivity and enable new and more efficient transduction mechanisms. We hereby review some of the most relevant applications of glasses and glass-ceramics for photonic sensors considering the recent trends and innovative approaches. This review covers from bulk glasses to thin films and from fiber optics to nanocrystal-based and their applications in sensing.

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“…In these configurations, the absorption of the pump beam and the optical gain-length product are limited owing to the short active regions of the vertical-cavity structures when only the defect layer is activated. It is demonstrated that for an optically pumped organic vertical-cavity laser, in which the whole layer including the Bragg reflectors was doped with a laser dye, the lasing threshold was reduced if compared with a laser with undoped Bragg reflectors under similar conditions [24], and that RF-sputtering is an optimum technique to fabricate films activated with Er 3+ ions [16,25,26]. It is also known that PBG structures not only enhance the emission properties of the embedded active systems but can be successfully employed to enhance the absorption feature of the systems [27].…”

Section: Introductionmentioning

confidence: 99%

Low-Threshold Coherent Emission at 1.5 µm from Fully Er3+ Doped Monolithic 1D Dielectric Microcavity Fabricated Using Radio Frequency Sputtering

et al. 2019

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Low threshold coherent emission at 1.5 µm is achieved using Er3+-doped dielectric 1D microcavities fabricated with a Radio Frequency-sputtering technique. The microcavities are composed of a half-wavelength Er3+-doped SiO2 active layer inserted between two Bragg reflectors consisting of ten, five, and seven pairs of SiO2/TiO2 layers, also doped with Er3+ ions. The morphology of the structure is inspected using scanning electron microscopy. Transmission measurements show the third and first order cavity resonance at 530 nm and 1.5 µm, respectively. The photoluminescence measurements are obtained using the optical excitation at the third order cavity resonance using a 514.5 nm Ar+ laser or Xe excitation lamp at 514.5 nm, with an excitation angle of 30°. The full width at half maximum of the emission peak at 1535 nm decreased with the pump power until the spectral resolution of the detection system was 2.7 nm. Moreover, the emission intensity presents a non-linear behavior with the pump power and a threshold at about 4 µW.

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SiO 2 -P 2 O 5 -HfO 2 -Al 2 O 3 -Na 2 O glasses activated by Er 3+ ions: From bulk sample to planar waveguide fabricated by rf-sputtering

Cited by 14 publications

References 18 publications

Demonstration of Optical Gain at 1535 nm Based on Er^III Complex‐Doped Polymer Waveguides Under Light‐Emitting Diode Excitation

Demonstration of Optical Gain at 1535 nm Based on Er^III Complex‐Doped Polymer Waveguides Under Light‐Emitting Diode Excitation

Glass and Glass–Ceramic Photonic Materials for Sensors

Low-Threshold Coherent Emission at 1.5 µm from Fully Er3+ Doped Monolithic 1D Dielectric Microcavity Fabricated Using Radio Frequency Sputtering

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SiO 2 -P 2 O 5 -HfO 2 -Al 2 O 3 -Na 2 O glasses activated by Er 3+ ions: From bulk sample to planar waveguide fabricated by rf-sputtering

Cited by 14 publications

References 18 publications

Demonstration of Optical Gain at 1535 nm Based on ErIII Complex‐Doped Polymer Waveguides Under Light‐Emitting Diode Excitation

Demonstration of Optical Gain at 1535 nm Based on ErIII Complex‐Doped Polymer Waveguides Under Light‐Emitting Diode Excitation

Glass and Glass–Ceramic Photonic Materials for Sensors

Low-Threshold Coherent Emission at 1.5 µm from Fully Er3+ Doped Monolithic 1D Dielectric Microcavity Fabricated Using Radio Frequency Sputtering

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Product

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Demonstration of Optical Gain at 1535 nm Based on Er^III Complex‐Doped Polymer Waveguides Under Light‐Emitting Diode Excitation

Demonstration of Optical Gain at 1535 nm Based on Er^III Complex‐Doped Polymer Waveguides Under Light‐Emitting Diode Excitation