Fluorescence-based remote irradiation sensor in liquid-filled hollow-core photonic crystal fiber

Zeltner, Richard; Bykov, Dmitry S.; Xie, Shangran; Russell, P. St. J.

doi:10.1063/1.4953590

Cited by 21 publications

(15 citation statements)

References 16 publications

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“…The particle can be freely moved along the fiber axis and is protected from unwanted external perturbations [16]. Recently, a "flying particle sensor" using trapped particles inside HC-PCF was reported [17,18] Here we report a "flying" WGM microlaser consisting of a dye-doped particle optically trapped and propelled within the core of a liquid-filled HC-PCF. The microparticle laser is pumped by sub-ns pulses at 532 nm, which are launched into the fundamental core mode along with a CW trapping beam at 1064 nm.…”

Section: Introductionmentioning

confidence: 96%

Flying particle microlaser and temperature sensor in hollow-core photonic crystal fiber

et al. 2018

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Whispering-gallery mode (WGM) resonators combine small optical mode volumes with narrow resonance linewidths, making them exciting platforms for a variety of applications. Here we report a flying WGM microlaser, realized by optically trapping a dye-doped microparticle within a liquid-filled hollow-core photonic crystal fiber (HC-PCF) using a CW laser and then pumping it with a pulsed excitation laser whose wavelength matches the absorption band of the dye. The laser emits into core-guided modes that can be detected at the endfaces of the HC-PCF. Using radiation forces, the microlaser can be freely propelled along the HC-PCF over multi-centimeter distances-orders of magnitude farther than in previous experiments where tweezers and fiber traps were used. The system can be used to measure temperature with high spatial resolution, by exploiting the temperature-dependent frequency shift of the lasing modes, and may also permit precise delivery of light to remote locations.

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Section: Introductionmentioning

confidence: 96%

Flying particle microlaser and temperature sensor in hollow-core photonic crystal fiber

et al. 2018

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“…Remote sensing of electric field, temperature and irradiation was demonstrated using charged particles and fluorescent particles respectively with a spatial resolution down to tens [136], © 2018 Springer Nature; e, Ref. [137], © 2016 OSA of microns [128,131,132]. In this scheme, the trapped particle responds locally to the sensing quantities when it is passing through the region of interest and, determined by the particle's properties, it can react in different degrees of freedom including transverse motion, variations in speed, fluorescence radiation, etc.…”

Section: Hc-pcf Fotsmentioning

confidence: 99%

Optical Trapping and Manipulation Using Optical Fibers

Lou

Pang

2019

Adv. Fiber Mater.

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An optical trap forms a restoring optical force field to immobilize and manipulate tiny objects. A fiber optical trap is capable of establishing the restoring optical force field using one or a few pieces of optical fiber, and it greatly simplifies the optical setup by removing bulky optical components, such as microscope objectives from the working space. It also inherits other major advantages of optical fibers: flexible in shape, robust against disturbance, and highly integrative with fiber-optic systems and on-chip devices. This review will begin with a concise introduction on the principle of optical trapping techniques, followed by a comprehensive discussion on different types of fiber optical traps, including their structures, functionalities and associated fabrication techniques. A brief outlook to the future development and potential applications of fiber optical traps is given at the end.

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“…In contrast, waveguides with liquid-filled cores, such as antiresonant reflecting optical waveguides (ARROWs) [6][7][8] or hollow-core photonic crystal fiber (HC-PCF) [9][10][11] , provide close to 100% overlap between the guided modes and the specimen, enabling extremely efficient light-matter interactions over long path-lengths. As a consequence they are a natural choice for optofluidic experiments, with applications in photochemistry, spectroscopy and sensing [11][12][13] as well as optical particle manipulation [14][15][16][17][18][19] . For liquid-core waveguides, light delivery is typically achieved via free-space coupling using lenses, or by butt-coupling to solid-core waveguides such as step-index fibers or ridgewaveguides 13,20 .…”

Section: Optofluidicmentioning

confidence: 99%

Broadband, Lensless, and Optomechanically Stabilized Coupling into Microfluidic Hollow-Core Photonic Crystal Fiber Using Glass Nanospike

et al. 2017

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ABSTRACT:We report a novel technique for launching broadband laser light into liquid-filled hollow-core photonic crystal fiber (HC-PCF). It uniquely offers self-alignment and self-stabilization via optomechanical trapping of a fused silica nanospike, fabricated by thermally tapering and chemically etching a single mode fiber into a tip diameter of 350 nm. We show that a trapping laser, delivering ~300 mW at 1064 nm, can be used to optically align and stably maintain the nanospike at the core center. Once this is done, a broadband supercontinuum beam (~575 to 1064 nm) can be efficiently and close to achromatically launched in the HC-PCF. The system is robust against liquid-flow in either direction inside the HC-PCF and the Fresnel back-reflections are reduced to negligible levels compared to free-space launching or butt-coupling. The results are of potential relevance for any application where the efficient delivery of broadband light into liquid-core waveguides is desired.

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Fluorescence-based remote irradiation sensor in liquid-filled hollow-core photonic crystal fiber

Cited by 21 publications

References 16 publications

Flying particle microlaser and temperature sensor in hollow-core photonic crystal fiber

Flying particle microlaser and temperature sensor in hollow-core photonic crystal fiber

Optical Trapping and Manipulation Using Optical Fibers

Broadband, Lensless, and Optomechanically Stabilized Coupling into Microfluidic Hollow-Core Photonic Crystal Fiber Using Glass Nanospike

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