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Students' Critical Perceptions About Mathematics Education
(Chapter, 2019)This paper presents excerpts from 10 semi-structured interviews conducted with 8th and 9th grade students in a Norwegian countryside school. Interviews were conducted to gain an insight into students' potential to critically ... -
STUDENTS’ BEHAVIOUR IN GROUP DISCUSSIONS DURING ONLINE TEACHING
(Chapter, 2021)Group discussions are used as a tool to increase student activity. In this paper students’ behaviour in group discussions during online teaching is investigated. The students’ activity and participation in the group ... -
Synchrotron X-ray Characterization of Atomic and Nanoscale Structures in Aperiodic Materials from Ambient to Extreme Conditions — Synergic Collaboration with Large-scale Computer Simulations
(World Scientific Series in Nanoscience and Nanotechnology;, Chapter, 2021)With the advent of the third generation of synchrotron sources and the development of light source techniques, the high energy (E > 50 keV) X-ray scattering technique has become feasible, leading to new approaches for ... -
Teaching In Student-Centred Active Learning Spaces: How Relational, Pedagogical, Spatial, And Technological Aspects Intertwine And Affect The Learning Environment
(Chapter, 2023)Higher educational institutions internationally have shown a growing interest in developing learning spaces that support student-centred learning approaches. For engineering education, this development aligns well with an ... -
Three-optical-cycle frequency comb centered around 4.2 µm using OP-GaP-based half-harmonic generation
(Chapter, 2016)We report a broadband mid-infrared frequency comb with three-optical-cycle pulse duration centered around 4.2 µm, with up to 220 mW average power, via OP-GaP-based half-harmonic generation pumped by mode-locked fiber lasers. -
Topology-based construction of business-integrated material modelling workflows
(Chapter, 2022)Designing a new product requires information from the business and physical domains, which implies integrating business decision tools with process and material simulation processes to form an overall workflow. The integration ... -
Towards Mid-IR Waveguide Lasers: Transition Metal Doped ZnS Thin Films
(Chapter; Peer reviewed, 2016)Thin films of Cr and Fe-doped ZnS suitable for waveguide mid-IR applications, with well-isolated TM2+ peaks, and Cr2+ absorption and fluorescence comparable to bulk crystals were investigated. Raman data indicate that the ... -
Ultrabroad Continuous-Wave Tuning of Ceramic Cr:ZnSe and Cr:ZnS Lasers
(Chapter, 2010)Using a single set of optics, we demonstrate ultrabroad tuning over more than 1300 nm from 1973 to 3349 nm in Cr:ZnSe and from 1962 to 3195 nm in Cr:ZnS at <10 GHz linewidth. -
Ultrafast fiber-based lasers beyond 2 µm
(Chapter, 2017)The talk reviews recent advances in fiber based ultrafast mid-IR lasers and frequency combs, outlines the trends in materials as well as novel approaches for generation of ultra-broadband spectra above 2 mm. -
Watt-level Kerr-Lens Mode-Locked Cr:ZnS Laser at 2.4 μm
(Chapter, 2013)Power scaling of Kerr-lens mode-locked Cr:ZnS femtosecond oscillator allows reaching 1 W output power and pulse energies over 8 nJ. Soliton and chirped-pulse regimes result in 68 fs and 0.8-2 ps pulses, respectively. -
Yb-Doped Fiber Lasers Operating in the Range of 1147-1200 nm
(Chapter, 2012)Pump source brightness and heat production per unit fiber length were found to be the critical parameters for the realized and investigated Yb-doped fiber lasers operating in the range of 1147-1200 nm. -
Yb-Tm energy transfer in Y-codoped fibers
(Chapter, 2013)Experimental investigation of Yb-Tm energy transfer process in Yb/Tm-doped fibers with Y-codoping provided a fairly high energy transfer efficiency of 50 %, making lasers based on these glass fibers attractive for diode-pumping ...