Sökning: "optical potential"
Visar resultat 1 - 5 av 549 avhandlingar innehållade orden optical potential.
1. Ultracold atoms in optical potentials : from noise-induced transport to superfluidity
Sammanfattning : In this thesis, both experimental studies and numerical simulations of ultracold atoms in optical potentials are presented in a collection of nine scientific papers. In particular, noise-induced transport in dissipative optical lattices and superfluid properties of Bose-Einstein condensates have been studied. LÄS MER
2. Optical Design for Stationary Solar Concentrators
Sammanfattning : Solar electricity is one of the most promising technologies for our future electricity supply. By using concentrators, it is possible to reduce the cost of generating photovoltaic electricity. This thesis discusses how to design stationary low concentrating systems for photovoltaic or PV/Thermal applications. LÄS MER
3. Electrochromic materials : optical, electrophysical and structural properties
Sammanfattning : .... LÄS MER
4. Reliability versus Cost in Next Generation Optical Access Networks
Sammanfattning : The ever increasing demands of Internet users caused by the introduction of new high bandwidth applications and online services as well as the growing number of users and devices connected to the Internet, bring many challenges for the operators, especially in the last mile section of the network. Next generation access architectures are expected to offer high sustainable bandwidth per user. LÄS MER
5. Optical Memories and Processing in Time- and Frequency Domain
Sammanfattning : Spectral hole burning and photon echoes are the techniques for frequency-selective optical memories, which have the potential to increase areal data storage density by a factor 10**7. They also have the capability to perform in-memory data processing. LÄS MER