Search Results - "Jes Broeng"

Femtosecond IR laser fabrication of Bragg gratings in photonic crystal fibers and tapers by Mihailov, S.J., Grobnic, D., Huimin Ding, Smelser, C.W., Jes Broeng

“…Fiber Bragg gratings were written in pure silica photonic crystal fibers (PCFs) and PCF tapers with 125-fs 800-nm infrared radiation. High reflectivities were…”
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Single-mode ytterbium-doped large-mode-area photonic bandgap rod fiber amplifier by Alkeskjold, Thomas Tanggaard, Laurila, Marko, Scolari, Lara, Broeng, Jes

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High power Yb-doped photonic bandgap fiber oscillator at 1178 nm by Fan, Xinyan, Chen, Meishin, Shirakawa, Akira, Ueda, Ken-ichi, Olausson, Christina B, Lyngsø, Jens K, Broeng, Jes

“…An ytterbium-doped solid-core photonic bandgap fiber oscillator in an all-fiber format is investigated for high power at an extreme long wavelength. The…”
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Photonic Crystal Fibers: A New Class of Optical Waveguides by Broeng, Jes, Mogilevstev, Dmitri, Barkou, Stig E., Bjarklev, Anders

“…Remarkable properties of optical fibers with a high-index core region and a surrounding silica/air photonic crystal cladding have recently been reported. Here…”
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Single-mode analysis of Yb-doped double-cladding distributed spectral filtering photonic crystal fibers by Coscelli, Enrico, Poli, Federica, Alkeskjold, Thomas T, Passaro, Davide, Cucinotta, Annamaria, Leick, Lasse, Broeng, Jes, Selleri, Stefano

“…Hybrid large mode area Ytterbium-doped double-cladding photonic crystal fibers with anti-symmetric high refractive index inclusions provide efficient amplified…”
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High power ytterbium fiber lasers at extremely long wavelengths by photonic bandgap fiber technology by Shirakawa, Akira, Olausson, Christina B., Maruyama, Hiroki, Ueda, Ken-ichi, Lyngsø, Jens K., Broeng, Jes

“…Yb-doped fiber laser operating at the long-wavelength edge (1150–1200 nm) of the broad gain spectrum has been investigated for yellow-orange sources. Power…”
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Air-guiding photonic bandgap fibers: spectral properties, macrobending loss, and practical handling by Hansen, T.P., Jes Broeng, Jakobsen, C., Vienne, G., Simonsen, H.R., Nielsen, M.D., Skovgaard, P.M.W., Folkenberg, J.R., Bjarklev, A.

“…For development of hollow-core transmission fibers, the realizable fibers lengths, bandwidth, characterization, and compatibility with standard technology are…”
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Hybrid Ytterbium-doped large-mode-area photonic crystal fiber amplifier for long wavelengths by Petersen, Sidsel R., Alkeskjold, Thomas T., Poli, Federica, Coscelli, Enrico, Jørgensen, Mette M., Laurila, Marko, Lægsgaard, Jesper, Broeng, Jes

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Highly polarized photonic crystal fiber laser by McNeillie, Fiona, Riis, Erling, Broeng, Jes, Folkenberg, Jacob, Petersson, Anders, Simonsen, Harald, Jacobsen, Christian

“…We report on the design of a polarization maintaining, double-clad, Yb doped photonic crystal fiber and demonstrate its lasing properties. The polarizing…”
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Theoretical analysis of mode instability in high-power fiber amplifiers by Hansen, Kristian Rymann, Alkeskjold, Thomas Tanggaard, Broeng, Jes, Lægsgaard, Jesper

“…We present a simple theoretical model of transverse mode instability in high-power rare-earth doped fiber amplifiers. The model shows that efficient power…”
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Highly increased photonic band gaps in silica/air structures by Broeng, Jes, Barkou, Stig E, Bjarklev, Anders, Knight, Jonathan C, Birks, Tim A, Russell, Philip St.J

“…We explore the possibilities of achieving larger out-of-plane band gaps in two-dimensional silica/air photonic crystals with hexagonal symmetry. By…”
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Single-Mode ytterbium-doped Large-Mode-Area photonic bandgap rod fiber amplifier by Alkeskjold, Thomas Tanggaard, Laurila, Marko, Scolari, Lara, Broeng, Jes

“…Enabling Single-Mode (SM) operation in Large-Mode-Area (LMA) fiber amplifiers and lasers is critical, since a SM output ensures high beam quality and excellent…”
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Thermo-optical effects in high-power ytterbium-doped fiber amplifiers by Hansen, Kristian Rymann, Alkeskjold, Thomas Tanggaard, Broeng, Jes, Lægsgaard, Jesper

“…We investigate the effect of temperature gradients in high-power Yb-doped fiber amplifiers by a numerical beam propagation model, which takes thermal effects…”
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Distributed mode filtering rod fiber amplifier delivering 292W with improved mode stability by Laurila, Marko, Jørgensen, Mette M, Hansen, Kristian R, Alkeskjold, Thomas T, Broeng, Jes, Lægsgaard, Jesper

“…We demonstrate a high power fiber (85 μm core) amplifier delivering up to 292 Watts of average output power using a mode-locked 30 ps source at 1032 nm…”
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Optical devices based on liquid crystal photonic bandgap fibres by Larsen, Thomas, Bjarklev, Anders, Hermann, David, Broeng, Jes

“…Photonic Crystal Fibers (PCFs) have appeared as a new class of optical waveguides, which have attracted large scientific and commercial interest during the…”
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Lasing in thulium-doped polarizing photonic crystal fiber by Modsching, Norbert, Kadwani, Pankaj, Sims, R Andrew, Leick, Lasse, Broeng, Jes, Shah, Lawrence, Richardson, Martin

“…We describe lasing of a thulium-doped polarizing photonic crystal fiber. A 4 m long fiber with 50 μm diameter core, 250 μm diameter cladding, and d/Λ ratio of…”
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All-optical modulation in dye-doped nematic liquid crystal photonic bandgap fibers by Alkeskjold, Thomas, Lægsgaard, Jesper, Bjarklev, Anders, Hermann, David, Anawati, Anawati, Broeng, Jes, Li, Jun, Wu, Shin-Tson

“…Photonic crystal fibers (PCFs) have attracted significant attention during the last years and much research has been devoted to develop fiber designs for…”
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Q-switching and efficient harmonic generation from a single-mode LMA photonic bandgap rod fiber laser by Laurila, Marko, Saby, Julien, Alkeskjold, Thomas T, Scolari, Lara, Cocquelin, Benjamin, Salin, Francois, Broeng, Jes, Lægsgaard, Jesper

“…We demonstrate a Single-Mode (SM) Large-Mode-Area (LMA) ytterbium-doped PCF rod fiber laser with stable and close to diffraction limited beam quality with 110W…”
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Single-frequency ytterbium doped photonic bandgap fiber amplifier at 1178 nm by Chen, Mingchen, Shirakawa, Akira, Fan, Xinyan, Ueda, Ken-Ichi, Olausson, Christina B, Lyngsø, Jens K, Broeng, Jes

“…1178 nm single-frequency amplification by Yb doped photonic bandgap fiber has been demonstrated. 24.6 W output power and 12 dB gain were obtained without…”
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Thermal Effects on the Single-Mode Regime of Distributed Modal Filtering Rod Fiber by Coscelli, E., Poli, F., Alkeskjold, T. T., Jorgensen, M. M., Leick, L., Broeng, J., Cucinotta, A., Selleri, S.

“…Power scaling of fiber laser systems requires the development of innovative active fibers, capable of providing high pump absorption, ultralarge effective…”
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