Resonant filtered fiber amplifiers

Autor: Martin D. Maack, Jens K. Lyngsø, Sidsel Petersen, Johannes Weirich, Jesper Lagsgaard, Danny Noordegraaf, Kristian Rymann Hansen, Thomas Tanggaard Alkeskjold, Mette C. Jørgensen, Marko Laurila, Christina B. Olausson

Publikováno v: 2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR).

In this paper we present our recent result on utilizing resonant/bandgap fiber designs to achieve high performance ytterbium doped fiber amplifiers for achieving diffraction limited beam quality in large mode area fibers, robust bending performance a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f20a793b101a4e28bd012860ef7d1fba
https://doi.org/10.1109/cleopr.2013.6600009

Cross-correlated imaging of single-mode photonic crystal rod fiber with distributed mode filtering

Autor: Roman Barankov, Mette Marie Jørgensen, Jes Broeng, Thomas Tanggaard Alkeskjold, Jesper Lægsgaard, Siddharth Ramachandran, Marko Laurila

Publikováno v: Laurila, M, Barankov, R, Jørgensen, M M, Alkeskjold, T T, Broeng, J, Lægsgaard, J & Ramachandran, S 2013, ' Cross-correlated imaging of single-mode photonic crystal rod fiber with distributed mode filtering ', Optics Express, vol. 21, no. 8, pp. 9215-9229 . https://doi.org/10.1364/OE.21.009215

Photonic crystal bandgap fibers employing distributed mode filtering design provide near diffraction-limited light outputs, a critical property of fiber-based high-power lasers. Microstructure of the fibers is tailored to achieve single-mode operatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20dcc16bffeeb2b10bda1869942d2c3d
https://pubmed.ncbi.nlm.nih.gov/23609632

Cross-correlated imaging of distributed mode filtering rod fiber

Autor: Sidsel Rübner Petersen, Mette Marie Jørgensen, Roman Barankov, Thomas Tanggaard Alkeskjold, Jes Broeng, Siddharth Ramachandran, Jesper Lægsgaard, Marko Laurila

Publikováno v: Fiber Lasers X: Technology, Systems, and Applications.

We analyze the modal properties of an 85μm core distributed mode filtering rod fiber using cross-correlated (C 2 ) imaging. We evaluate suppression of higher-order modes (HOMs) under severely misaligned mode excitation and identify a single-mode reg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a622738bc65183503621a83bad6ccf9b
https://doi.org/10.1117/12.2002808

Modal instability of rod fiber amplifiers: a semi-analytic approach

Autor: Kristian Rymann Hansen, Mette Marie Jørgensen, Marko Laurila, Thomas Tanggaard Alkeskjold, Jesper Lægsgaard

Publikováno v: Fiber Lasers X: Technology, Systems, and Applications.

The modal instability (MI) threshold is estimated for four rod fiber designs by combining a semi-analytic model with the finite element method. The thermal load due to the quantum defect is calculated and used to numerically determine the mode distri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4640c57b43e50cbe79a3f71a97e3768
https://doi.org/10.1117/12.2001412

Thermal-induced refractive index change effects on distributed modal filtering properties of rod-type photonic crystal fibers

Autor: Enrico Coscelli, Stefano Selleri, Annamaria Cucinotta, Lasse Leick, Thomas Tanggaard Alkeskjold, Mette M. Joergensen, Jesper Lægsgaard, Federica Poli, Marko Laurila, Jes Broeng

Publikováno v: IEEE Photonics Conference 2012.

The effects of thermally-induced refractive index change on distributed modal filtering rod-type photonic crystal fibers are numerically investigated. Results have shown a significant blue-shift of the single-mode range for increasing temperature.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fb70f9d2e47213a3341d77e47bf00a2c
https://doi.org/10.1109/ipcon.2012.6358870