Yb-doped silica glass and photonic crystal fiber based on laser sintering technology

Zhang, Wei; Wu, Jiale; Zhou, Guiyao; Xia, Changming; Liu, Jiantao; Tian, Hongchun; Liang, Wanting; Hou, Zhipeng

doi:10.1088/1054-660x/26/3/035801

Cited by 17 publications

(2 citation statements)

References 19 publications

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“…S1). [25][26][27][28][29][30][31][32] Our central hypothesis for the correlation between molecular structure and the ultra-narrow linewidth is that the rigidity of the ferrocene backbone in the supporting ligand sphere minimize inhomogeneous broadening and f/d orbital coupling, respectively. For example, Yb(trensal) (where H3(trensal) is 2,2',2"tris(salicylideneimino)triethylamine) is a compound with a high degree of magnetic anisotropy and well-defined optical features that shows a linewidth of 4.6 meV (fig.…”

Section: Resultsmentioning

confidence: 99%

Toward liquid cell quantum sensing: Ytterbium complexes with ultra-narrow absorption

Shin

Zhao

Shen

et al. 2022

Preprint

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In quantum technology (such as atomic vapor cells used in precision magnetometry), the energetic disorder induced by a fluctuating liquid environment acts in direct opposition to the precise control required for coherence-based sensing. Overcoming fluctuations requires a protected quantum subspace that only weakly interacts with the local environment. Herein, we report a ferrocene-supported ytterbium complex ((thiolfan)YbCl(THF), thiolfan = 1,1′-bis(2,4-di-tert-butyl-6-thiomethylenephenoxy)ferrocene) that exhibits an extraordinarily narrow absorption linewidth in solution at room temperature with a full-width at half-maximum of 0.625 ± 0.006 meV. A detailed spectroscopic analysis allows us to assign all near infrared (NIR) transitions to atom-centered f-f transitions, protected from the solvent environment. A combination of density functional theory and multireference methods match experimental transition energies and oscillator strengths, illustrating the role of spin-orbit coupling and asymmetric ligand field in enhancing absorption and pointing toward molecular design principles that create well-protected yet observable electronic transitions in lanthanide complexes. Narrow linewidths allow for a demonstration of extremely low-field magnetic circular dichroism at room temperature, employed to sense and image magnetic fields, down to Earth scale. We term this system an ‘atom-like molecular sensor’ (ALMS), and propose approaches to improve its performance.

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Section: Resultsmentioning

confidence: 99%

Toward liquid cell quantum sensing: Ytterbium complexes with ultra-narrow absorption

Shin

Zhao

Shen

et al. 2022

Preprint

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“…This method offers unprecedented flexibility with respect to the geometry of the fibers [13,16]. The granulated silica enables the preform assembly based on the powder-in-tube technique, which in turn is resting upon assembling tubes and doped or pure silica granulates [19,20,[26][27][28][29]. By virtue of this method, we gain versatility in producing any kind of fiber structure since no symmetry is required, inter alia microstructured optical fibers [13,16].…”

Section: The Granulated Silica Methodsmentioning

confidence: 99%

Granulated Silica Method for the Fiber Preform Production

Pilz

Najafi

Ryser

et al. 2017

Fibers

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During the past few years, we have studied the granulated silica method as a versatile and cost effective way of fiber preform production and the sol-gel method. Until now, we have used the sol-gel technology together with an iterative re-melting and milling step in order to produce rare earth or transition metal doped granular material for the granulated silica method. Here, we present that the iterative re-melting (laser-assisted) and milling step is no longer needed to reach a high homogeneity. The sol-gel method also offers a high degree of compositional flexibility with respect to dopants; it further facilitates achieving high concentrations, even in cases when several dopants are used. We employed optical active doped sol-gel derived granulate for the fiber core, whereas pure or index-raised granulated silica has been employed for the cladding. Based on the powder-in-tube technique, where silica glass tubes are appropriately filled with these granular materials, fibers has been directly drawn ("fiber rapid prototyping"), or eventually after an additional optional quality enhancing vitrification step. The powder-in-tube technique is also ideally suited for the preparation of microstructured optical fibers.

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Room-Temperature 2.5 eV Pulsed Cathodoluminescence Band of High-Purity Silicon Dioxide

et al. 2018

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Yb-doped silica glass and photonic crystal fiber based on laser sintering technology

Cited by 17 publications

References 19 publications

Toward liquid cell quantum sensing: Ytterbium complexes with ultra-narrow absorption

Toward liquid cell quantum sensing: Ytterbium complexes with ultra-narrow absorption

Granulated Silica Method for the Fiber Preform Production

Room-Temperature 2.5 eV Pulsed Cathodoluminescence Band of High-Purity Silicon Dioxide

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