Low loss hollow optical-waveguide connection from atmospheric pressure to ultra-high vacuum

Ermolov, Alexey; Mak, Ka Fai; Tani, Francesco; Hölzer, P; Travers, John C.; Russell, P. St. J.

doi:10.1063/1.4860947

Cited by 10 publications

(9 citation statements)

References 20 publications

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“…Generalizations of the setup in Fig. 25 include delivering the output directly to a differentially pumped vacuum chamber for VUV or XUV experiments (Ermolov et al, 2013;Fan et al, 2014;Tani et al, 2017), connection to a VUV spectrometer (Belli et al, 2015;Ermolov et al, 2015), or avoidance of gas cells altogether by splicing the HC-PCF directly to solid-core fibers, as shown by Benabid et al (2005).…”

Section: Canonical Experimental Setupmentioning

confidence: 99%

Hybrid photonic-crystal fiber

et al. 2017

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This article offers an extensive survey of results obtained using hybrid photonic-crystal fibers (PCFs) which constitute one of the most active research fields in contemporary fiber optics. The ability to integrate novel and functional materials in solid-and hollow-core PCFs through various postprocessing methods has enabled new directions toward understanding fundamental linear and nonlinear phenomena as well as novel application aspects, within the fields of optoelectronics, material and laser science, remote sensing, and spectroscopy. Here the recent progress in the field of hybrid PCFs is reviewed from scientific and technological perspectives, focusing on how different fluids, solids, and gases can significantly extend the functionality of PCFs. The first part of this review discusses the efforts to develop tunable linear and nonlinear fiber-optic devices using PCFs infiltrated with various liquids, glasses, semiconductors, and metals. The second part concentrates on recent and state-of-the-art advances in the field of gas-filled hollow-core PCFs. Extreme ultrafast gas-based nonlinear optics toward light generation in the extreme wavelength regions of vacuum ultraviolet, pulse propagation, and compression dynamics in both atomic and molecular gases, and novel solitonplasma interactions are reviewed. A discussion of future prospects and directions is also included.

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Section: Canonical Experimental Setupmentioning

confidence: 99%

Hybrid photonic-crystal fiber

et al. 2017

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“…This structural feature causes numerous physical effects. 1-7,9 Therefore, PCs and quasi-PCs could be used in various applications, including waveguiding [13][14][15][16] and PC fibers, [17][18][19][20][21] for optical supercontinuum generation, [22][23][24][25][26] nonlinear light conversion, high-harmonic generation, and active media pumping. [27][28][29][30][31][32][33][34][35][36] Recently, the surface electromagnetic modes of the PC and surface Bloch waves [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53]67,68 have attracted much interest in the scientific community.…”

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confidence: 99%

Band-gap nonlinear optical generation: The structure of internal optical field and the structural light focusing

Zaytsev

Katyba

Yakovlev

et al. 2014

Journal of Applied Physics

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A novel approach for the enhancement of nonlinear optical effects inside globular photonic crystals (PCs) is proposed and systematically studied via numerical simulations. The enhanced optical harmonic generation is associated with two- and three-dimensional PC pumping with the wavelength corresponding to different PC band-gaps. The interactions between light and the PC are numerically simulated using the finite-difference time-domain technique for solving the Maxwell's equations. Both empty and infiltrated two-dimensional PC structures are considered. A significant enhancement of harmonic generation is predicted owing to the highly efficient PC pumping based on the structural light focusing effect inside the PC structure. It is shown that a highly efficient harmonic generation could be attained for both the empty and infiltrated two- and three-dimensional PCs. We are demonstrating the ability for two times enhancement of the parametric decay efficiency, one order enhancement of the second harmonic generation, and two order enhancement of the third harmonic generation in PC structures in comparison to the nonlinear generations in appropriate homogenous media. Obviously, the nonlinear processes should be allowed by the molecular symmetry. The criteria of the nonlinear process efficiency are specified and calculated as a function of pumping wavelength position towards the PC globule diameter. Obtained criterion curves exhibit oscillating characteristics, which indicates that the highly efficient generation corresponds to the various PC band-gap pumping. The highest efficiency of nonlinear conversions could be reached for PC pumping with femtosecond optical pulses; thus, the local peak intensity would be maximized. Possible applications of the observed phenomenon are also discussed.

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“…These studies have been limited to single-gas injection and closed-loop configurations [6]. Existing gas delivery schemes have been limited to low-gas flows (i.e., less than 5 psi) [7], single-gas delivery, or vacuum conditions [8]. Gas loading systems based on pressure-driven filling have been reported in [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Another analytical model [8] addresses the condition of ultrahigh vacuum pressure environments for long lengths of bandgap fiber (1.4 to 10 m) with small core diameters ranging 10 to 20 μm. The model highlights that viscosity is important under these physical conditions of restrictive flow to support vacuum conditions.…”

Section: Introductionmentioning

confidence: 99%

Gas-filling dynamics of a hollow-core photonic bandgap fiber for nonvacuum conditions

Wynne

Barabadi

2015

Appl. Opt.

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This paper introduces an analytical model for the pressure-driven delivery of gas mixtures consisting of multiple components of gases with varied viscosity to hollow-core photonic bandgap fibers. Photonic bandgap fibers have been used for all-fiber spectroscopy configurations for gases like methane and acetylene that are relevant to the development of all-fiber chemical sensors. The unique structure of these fibers permits the formation of a gas cell with micrometer-scaled volumes to promote strong interaction with the guided optical field supported by increased interaction lengths and low optical losses. The influence of the effective viscosity of the delivered gas is significant to the fiber-filling process and is emphasized in this discussion. Unlike previous work, this investigation is not limited to closed-loop configurations with low gas flows, single-gas delivery systems, or vacuum conditions. The findings of this study are relevant to applications employing spectroscopy principles including manufacturing process monitoring for integrated fibers possessing metal-oxide junctions, antiresonant fibers, and suspended-core-type fiber evanescent-field Raman spectroscopy applications. The experimental results agree with the predictions for the case of hydrodynamic flow under nonvacuum conditions. The dynamics of the gas delivery to the perforated optical fiber were predicted and demonstrated for a 0.365 m fiber length with a 12.5 μm core. This core region was occupied by a preliminary gas, which affected the filling rates. The effective viscosities for the pure gas (acetylene) produced filling rates of 6 s (at 10 psi) and 11 s (at 5 psi). However, mixed gases (acetylene balance nitrogen) presented viscosity-dependent delays of 0.3 and 0.5 s.

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Low loss hollow optical-waveguide connection from atmospheric pressure to ultra-high vacuum

Cited by 10 publications

References 20 publications

Hybrid photonic-crystal fiber

Hybrid photonic-crystal fiber

Band-gap nonlinear optical generation: The structure of internal optical field and the structural light focusing

Gas-filling dynamics of a hollow-core photonic bandgap fiber for nonvacuum conditions

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