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    • 1 Watt femtosecond mid-IR Cr:ZnS laser 

      Sorokin, Evgeni; Tolstik, Nikolai; Sorokina, Irina T (Journal article; Peer reviewed, 2013)
      A room-temperature Kerr-Lens modelocked (KLM) Cr:ZnS laser generates <70 fs pulses duration (about eight optical cycles) with 5.6 nJ pulse energy and over 100 nm FWHM spectral width at 105-157 MHz repetition rates. The ...

    • 1.9 micron Tm3+-doped germanate fiber laser source for Si-processing 

      Dvoyrin, Vladislav; Sorokina, Irina T; Okhotnikov, Oleg; Mashinsky, Valery M.; Ischakova, Lyudmila D.; Dianov, Evgenii M; Khopin, Vladimir F.; Guryanov, Aleksey N. (Chapter, 2011)
      We report development of a novel Tm3+ -doped fiber laser source at 1.86 μm based on highly nonlinear 55GeO2-45SiO2 dispersion shifted fiber, applicable to 3D-volume microprocessing of Si.

    • The 11 year solar cycle UV irradiance effect and its dependency on the Pacific Decadal Oscillation 

      Guttu, Sigmund; Orsolini, Yvan J.; Stordal, Frode; Otterå, Odd Helge; Omrani, Nour-Eddine (Peer reviewed; Journal article, 2021)
      The stratospheric, tropospheric and surface impacts from the 11 year ultraviolet solar spectral irradiance (SSI) variability have been extensively studied using climate models and observations. Here, we demonstrate using ...

    • 2.4 μm dual-comb spectroscopy 

      Bernhardt, B; Sorokin, Evgeni; Jacquet, P; Thon, R; Becker, T; Sorokina, Irina T; Hansch, TW; Picque, Nathalie (Chapter, 2010)
      A proof-of-principle experiment of mid-infrared frequency comb Fourier transform spectroscopy is carried out with two interfering Cr2+:ZnSe femtosecond oscillators, emitting around 2400 nm. Spectra of acetylene are measured ...

    • 2.5D and 3D segmentation of brain metastases with deep learning on multinational MRI data 

      Ottesen, Jon André; Yi, Darvin; Tong, Elizabeth; Iv, Michael; Latysheva, Anna; Saxhaug, Cathrine; Jacobsen, Kari Dolven; Helland, Åslaug; Emblem, Kyrre E; Rubin, Daniel L.; Bjørnerud, Atle; Zaharchuk, Greg; Grøvik, Endre (Peer reviewed; Journal article, 2023)
      Introduction: Management of patients with brain metastases is often based on manual lesion detection and segmentation by an expert reader. This is a time- and labor-intensive process, and to that end, this work proposes ...

    • 2D in situ røntgenavbilding av aluminiumskum under kompresjon 

      Flatøe, Bjørnar Askeland (Master thesis, 2019)
      Dette studiet ble gjennomført for å bestemme nytteverdien av todimensjonale in situ røntgenavbildninger for å undersøke dynamiske prosesser i tredimensjonale prøver. Aluminium skumble undersøkt ved bruk av radiogram of ...

    • 2D-Fourieranalyse av strekkindusert endring i kollagenstruktur 

      Myhre, Frøydis Johanne Nystedt (Master thesis, 2009)

    • 2N+4-rule and an atlas of bulk optical resonances of zigzag graphene nanoribbons 

      Payod, R. B.; Grassano, D.; Santos, G. N. C.; Levshov, D. I.; Pulci, O.; Saroka, Vasil (Journal article; Peer reviewed, 2020)
      Development of on-chip integrated carbon-based optoelectronic nanocircuits requires fast and non-invasive structural characterization of their building blocks. Recent advances in synthesis of single wall carbon nanotubes ...

    • 31P MRS protocol optimization and repeatability testing in calf muscle of healthy volunteers on a clinical 7 Tesla MR scanner 

      Norum, Andreas (Master thesis, 2021)
      Hovedmålet for denne masteroppgaven var å etablere en skannprotokoll og evaluere repeterbarheten i 31P MRS i leggmuskelen hos friske frivillige på den kliniske 7T MR-skanneren ved St. Olavs Hospital. Startpunktet for ...

    • 3D image guided adaptive brachytherapy in patients with locally advanced cervical cancer: experience and clinical results from a minimum of six years of follow-up 

      Sundset, Marit; Wanderås, Anne Dybdahl; Danielsen, Signe; Alsaker, Mirjam Delange; Hagen, Bjørn; Marthinsen, Anne Beate Langeland (Peer reviewed; Journal article, 2021)
      In 2005, individualized 3D image guided brachytherapy was implemented for cervical cancer patients, in accordance with the (GYN) GEC ESTRO recommendation, at St. Olav's Hospital, Trondheim, Norway. This study reports the ...

    • 3D Maps of Mineral Composition and Hydroxyapatite Orientation in Fossil Bone Samples Obtained by X-ray Diffraction Computed Tomography 

      Mürer, Fredrik Kristoffer; Sanchez, Sophie; Alvarez-Murga, Michelle; Di Michiel, Marco; Pfeiffer, Franz; Bech, Martin; Breiby, Dag Werner (Journal article; Peer reviewed, 2018)
      Whether hydroxyapatite (HA) orientation in fossilised bone samples can be non-destructively retrieved and used to determine the arrangement of the bone matrix and the location of muscle attachments (entheses), is a question ...

    • 3D modelling of β'' in Al-Mg-Si: towards an atomistic level ab initio based examination of a full precipitate enclosed in a host lattice 

      Ehlers, Flemming J H; Dumoulin, Stephane; Holmestad, Randi (Journal article, 2014)
      We extend a first principles based hierarchical multi-scale model scheme for describing a fully coherent precipitate in a host lattice to 3D simulations. As our test system, the needle-shaped main hardening Al–Mg–Si alloy ...

    • 3D orientational imaging of gallbladder stones 

      Ruiz Martínez, Alejandro (Bachelor thesis, 2024)
      X-ray Diffraction Tensor Tomography is an emerging imaging technique to study the mineralogy and orientation of crystallites at a microscale level. In the work presented in this thesis, we have tested an algorithm developed ...

    • 3D TEM characterization of silver implanted silicon for intermediate band solar cells 

      Lysne, Hogne (Master thesis, 2017)
      As the need for renewable and sustainable energy sources are growing solar cells are turning into one of the most affordable and widely adopted solutions for renewable electricity production. This is driven by a steady ...

    • 3D-EPI with parallel imaging acceleration along two Axis: Evaluated with Phantom Study and BOLD fMRI 

      Vaksdal, Martin (Master thesis, 2013)
      The function of the human brain has for many years been an intriguing field of research, and has led to the discovery of functional MRI (fMRI). fMRI is dependent on high spatial and temporal resolution to acquire detailed ...

    • 3HSP J095507.9+355101: A flaring extreme blazar coincident in space and time with IceCube-200107A 

      Giommi, P.; Padovani, P.; Oikonomou, Foteini; Glauch, T.; Paiano, S.; Resconi, E. (Peer reviewed; Journal article, 2020)
      The uncertainty region of the highly energetic neutrino IceCube200107A includes 3HSP J095507.9+355101 (z = 0.557), an extreme blazar, which was detected in a high, very hard, and variable X-ray state shortly after the ...

    • The 3rd ESTRO-EFOMP core curriculum for medical physics experts in radiotherapy 

      Garibaldi, Cristina; Essers, Marion; Heijmen, Ben; Bertholet, Jenny; Koutsouveli, Efi; Schwarz, Marco; Bert, Christoph; Bodale, Marin; Casares-Magaz, Oscar; Gerskevitch, Eduard; Koniarova, Irena; Korreman, Stine; Lisbona, Albert; Lopez Medina, Antonio; Maas, Ad; Moeckli, Raphaël; Moore, Margaret; Petrovic, Borislava; Piotrowski, Tomasz; Poli, Esmeralda; Prezado, Yolanda; Reynaert, Nick; Redalen, Kathrine; Stylianou Markidou, Erato; Verellen, Dirk; Jornet, Nuria; Clark, Catharine H. (Peer reviewed; Journal article, 2022)
      Purpose To update the 2011 ESTRO-EFOMP core curriculum (CC) for education and training of medical physics experts (MPE)s working in radiotherapy (RT), in line with recent EU guidelines, and to provide a framework for ...

    • 3W Raman Soliton Tunable between 2-2.2 µm in Tm-Doped Fiber MOPA 

      Dvoyrin, Vladislav; Klimentov, Dmitry; Sorokina, Irina T (Chapter, 2013)
      The simple and compact Tm-doped fiber MOPA generates tunable between 2-2.2 µm Raman solitons with average power up to 3W. Pulses as short as 130 fs and energy up to 38 nJ were demonstrated.

    • 5 W Supercontinuum Generation at 1.9-2.5 μm from a Tm-Doped All-Fiber MOPA Laser 

      Dvoyrin, Vladislav; Sorokina, Irina T (Chapter, 2013)
      We report a simple method of generating flat-top high power (5W) supercontinuum from an all-silica-fiber Tm-MOPA laser emitting in the interesting for applications 1.96-2.48 μm range (at -5 dB level), covering transparency ...

    • 6.8 W all-fiber supercontinuum source at 1.9-2.5 um 

      Dvoyrin, Vladislav; Sorokina, Irina T (Journal article; Peer reviewed, 2014)
      We report a simple method of generating a spectrally flat and high average power spectral density (up to 14 mW/nm) optical supercontinuum in the 1.95–2.5 μm range covering a transparency window of the atmosphere. The ...