Opportunities for sustainable economic development of the coastal territories of the Baltic Sea Region in the context of digital transformation

The article explores opportunities for the sustainable economic development of coastal territories in the Baltic Sea region (BSR) arising in blue economy sectors in the framework of digital transformation. The study argues that a more active commercialisation of territorial resources can facilitate the sustainable economic development of the BSR coastal territories, following digitally-driven innovations. The paper provides an overview of methodological approaches to territorial sustainability. It also assesses the 2009-2018 level of the socio-economic development of the BSR coastal territories, underpins the importance of the blue economy and highlights the role of digital transformation in reaching the UN Sustainable Development Goals (SDGs) in the BSR through digitally-driven innovations. A comparative and problem-targeted statistics analyses show significant differences in the level and dynamics of socio-economic development in the BSR coastal territories with their GRP per capita being generally lower than the national or macroregional average. A review of literature on sustainable development in the BSR has shown that a more active use of unique resources of the coastal territories along with a technology-driven growth of blue economy sectors can counterbalance the negative impact of the territories’ uneven development on the progress towards the SDGs in the BSR. Increasing the competitiveness of the BSR coastal territories requires investment in digital solutions in the blue economy sectors and the creation of a communication infrastructure. The review of key innovations in the blue economy sectors shows that their implementation gives impetus to other industries by reducing costs, creating new jobs, and improving the quality of products and services

TRIGA-SPEC: A setup for mass spectrometry and laser spectroscopy at the research reactor TRIGA Mainz

The research reactor TRIGA Mainz is an ideal facility to provide neutron-rich nuclides with production rates sufficiently large for mass spectrometric and laser spectroscopic studies. Within the TRIGA-SPEC project, a Penning trap as well as a beam line for collinear laser spectroscopy are being installed. Several new developments will ensure high sensitivity of the trap setup enabling mass measurements even on a single ion. Besides neutron-rich fission products produced in the reactor, also heavy nuclides such as 235-U or 252-Cf can be investigated for the first time with an off-line ion source. The data provided by the mass measurements will be of interest for astrophysical calculations on the rapid neutron-capture process as well as for tests of mass models in the heavy-mass region. The laser spectroscopic measurements will yield model-independent information on nuclear ground-state properties such as nuclear moments and charge radii of neutron-rich nuclei of refractory elements far from stability. This publication describes the experimental setup as well as its present status.Comment: 20 pages, 17 figure

Coherent optical link over hundreds of metres and hundreds of terahertz with subfemtosecond timing jitter

Recent developments in stabilized lasers have resulted in ultrastable optical oscillators with spectral purities below 1 Hz refs 1 - 6. These oscillators are not transportable at present and operate at a single frequency. To realize their full potential, a highly coherent, frequency-diverse fibre-optic network is needed to faithfully transfer the optical signals to remote sites and to different optical frequencies. Here we demonstrate such a coherent network composed of erbium fibre and Ti: sapphire laser-based, optical-frequency combs(7-9), stabilized optical-fibre links(4,10) and cavity-stabilized lasers(4-6). We coherently transmit an optical carrier over 750 m of optical fibre with conversions to wavelengths of 657, 767, 1,126 and 1,535 nm, an overall timing jitter of 590 attoseconds, and a frequency instability of 12 mHz for the 195 THz carrier in 1 s and 250 mu Hz in 1,000 s. This first remote synchronization of two frequency combs also demonstrates a factor of 30 improvement in the relative stability of fibre frequency combs(11,12)

Assessing written work by determining competence to achieve the module-specific learning outcomes.

This chapter describes lasers and other sources of coherent light that operate in a wide wavelength range. First, the general principles for the generation of coherent continuous-wave and pulsed radiation are treated including the interaction of radiation with matter, the properties of optical resonators and their modes as well as such processes as Q-switching and mode-locking. The general introduction is followed by sections on numerous types of lasers, the emphasis being on todayʼs most important sources of coherent light, in particular on solid-state lasers and several types of gas lasers. An important part of the chapter is devoted to the generation of coherent radiation by nonlinear processes with optical parametric oscillators, difference- and sum-frequency generation, and high-order harmonics. Radiation in the extended ultraviolet (EUV) and x-ray ranges can be generated by free electron lasers (FEL) and advanced x-ray sources. Ultrahigh light intensities up to 1021 W/cm2 open the door to studies of relativistic laser–matter interaction and laser particle acceleration. The chapter closes with a section on laser stabilization