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

Zeltner R, Xie S, Pennetta R, Russell PSJ (2017)

Publication Type: Journal article

Publication year: 2017

Journal

ACS Photonics American Chemical Society

Book Volume: 4

Pages Range: 378-383

Journal Issue: 2

DOI: 10.1021/acsphotonics.6b00868

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 $∼$300 mW at 1064 nm, can be used to optically align and stably maintain the nanospike at the core center. Once this is done, a weak broadband supercontinuum signal ($∼$575--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.

Authors with CRIS profile

Richard Zeltner Lehrstuhl für Experimentalphysik (Optik) Philip St. John Russell Lehrstuhl für Experimentalphysik (Alfried Krupp von Bohlen und Halbach-Professur)

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Zeltner, R., Xie, S., Pennetta, R., & Russell, P.S.J. (2017). Broadband, Lensless, and Optomechanically Stabilized Coupling into Microfluidic Hollow-Core Photonic Crystal Fiber Using Glass Nanospike. ACS Photonics, 4(2), 378-383. https://dx.doi.org/10.1021/acsphotonics.6b00868

MLA:

Zeltner, Richard, et al. "Broadband, Lensless, and Optomechanically Stabilized Coupling into Microfluidic Hollow-Core Photonic Crystal Fiber Using Glass Nanospike." ACS Photonics 4.2 (2017): 378-383.

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