Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Ossi Kimmelma"'
Autor:
Pauli Kiiveri, Joona Koponen, Juha Harra, Ossi Kimmelma, Jijo Paul, Ville Aallos, Steffen Novotny, Hannu Husu, Heikki Ihalainen
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 6, Pp 1-10 (2019)
Refractive index profile of the core is a key design parameter in fiber lasers and amplifiers. During manufacturing, the initial information of the index profile is obtained from the preform, while ultimately the performance is defined by the index p
Externí odkaz:
https://doaj.org/article/b95c7d2976504a0cb03aeb6468da4eb0
Autor:
Mingshu Chen, Alexander Rainville, Manoj Kanskar, Jim Zhang, Ossi Kimmelma, Arto Nieminen, Donald Sipes, Brian Schulz, Carson Shollenbarger, Tong Zhou, Russell Wilcox, Almantas Galvanauskas
Publikováno v:
Fiber Lasers XX: Technology and Systems.
Autor:
Eike, Brockmüller, Felix, Wellmann, Daniel, Lutscher, Ossi, Kimmelma, Tyson, Lowder, Steffen, Novotny, Roland, Lachmayer, Jörg, Neumann, Dietmar, Kracht
Publikováno v:
Optics express. 30(15)
We report on the development of a side-fused signal-pump combiner with an integrated feed-through 34/250-µm chirally coupled core fiber. The manufacturing process involves a novel rotationally symmetrical cladding restructuring using a CO
Autor:
Pauli Kiiveri, Mikko Kuusisto, Joona Koponen, Ossi Kimmelma, Ville Aallos, Juha Harra, Hannu Husu, Päivi Kyllönen, Manoj Kanskar
Publikováno v:
Fiber Lasers XIX: Technology and Systems.
Autor:
Ossi Kimmelma, Heikki Ihalainen, Ville Aallos, Steffen Novotny, Hannu Husu, Jijo Paul, Pauli Kiiveri, Juha Harra, Joona Koponen
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 6, Pp 1-10 (2019)
Refractive index profile of the core is a key design parameter in fiber lasers and amplifiers. During manufacturing, the initial information of the index profile is obtained from the preform, while ultimately the performance is defined by the index p
Autor:
Eike Brockmüller, Felix Wellmann, Daniel Lutscher, Ossi Kimmelma, Tyson Lowder, Steffen Novotny, Roland Lachmayer, Jörg Neumann, Dietmar Kracht
Publikováno v:
Optics Express. 30:25946
We report on the development of a side-fused signal-pump combiner with an integrated feed-through 34/250-µm chirally coupled core fiber. The manufacturing process involves a novel rotationally symmetrical cladding restructuring using a CO2-laser bea
Autor:
Hannu Husu, Steffen Novotny, Joona Koponen, Jijo Paul, Pauli Kiiveri, Juha Harra, Ville Aallos, Heikki Ihalainen, Ossi Kimmelma
Publikováno v:
Fiber Lasers XVI: Technology and Systems.
It is possible to predict more accurately the laser fiber refractive index when we apply a stress induced index change model together with the measured preform index profile data. The improved fiber index difference estimates enable to fine tune the
Autor:
Ville Aallos, Ossi Kimmelma, Almantas Galvanauskas, I-Ning Hu, Joona Koponen, Jim Zhang, M. Kanskar
Publikováno v:
Fiber Lasers XV: Technology and Systems.
We report on the performance of a standard Yb-doped DC-LMA fiber and compare it to a similar core-size chirally-coupled core (3C®) fiber in a co-pumped fiber amplifier configuration. We used Yb-doped 20/400/0.064 DC LMA fiber for the power amplifier
Publikováno v:
Applied optics. 56(4)
The measurement of fundamental mode bend loss is thoroughly studied in large-mode-area few-mode optical fibers. The influencing factors, including spectral properties of the light source, modal power content and cladding light, are experimentally inv
Autor:
Ilkka Tittonen, Ossi Kimmelma
Publikováno v:
Optics Communications. 282:2930-2933
Pulsed UV lasers at the wavelengths of 374 and 280 nm are realized by cascaded second harmonic generation (SHG) and sum frequency generation (SFG) processes using a Nd:YAG laser at 1123 nm. The Nd:YAG laser is longitudinally pumped and passively Q-sw