Sökning: "Optics"

Visar resultat 11 - 15 av 1186 avhandlingar innehållade ordet Optics.

1. 11. Majorana Representation in Quantum Optics : SU(2) Interferometry and Uncertainty Relations

   Författare :Saroosh Shabbir; Gunnar Björk; Maria Chekhova; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Majorana representation; Quantum optics; interferometry; SU 2 group; angular momentum; arbitrary optical gates; Fysik; Physics;

   Sammanfattning : The algebra of SU(2) is ubiquitous in physics, applicable both to the atomic spin states and the polarisation states of light. The method developed by Majorana and Schwinger to represent pure, symmetric spin-states of arbitrary value as a product of spin-1/2 states is a powerful tool that allows for a great conceptual and practical simplification. LÄS MER

3. 12. Comparative optics of prosobranch eyes

   Författare :Jan-Olof Seyer; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ampularia; Littorina; Strombus; evolution; visual ecology; summation; convergence; optic nerve; resolution; sensitivity; optics; eye; gastropod; prosobranch; Animal anatomy; animal morphology; Djurs anatomi och morfologi;

   Sammanfattning : Functional aspects of the large diversity of eye design in prosobranch molluscs was investigated using morphological and optical methods. Three species from different habitats were investigated. Littorina littorea from Scandinavian intertidal rock habitats, Strombus raninus and S. gigas from tropical sand-flats and Ampularia sp. LÄS MER

4. 13. Quantum optics in constrained geometries

   Författare :Björn Hessmo; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum chemistry; quantum optics; atom optics; complementarity; magnetic traps; laser cooling; quantum information; quantal phases; Kvantkemi; Quantum chemistry; Kvantkemi; Quantum Chemistry; kvantkemi;

   Sammanfattning : When light exhibits particle properties, and when matter exhibits wave properties quantum mechanics is needed to describe physical phenomena. A two-photon source produces nonmaximally entangled photon pairs when the source is small enough to diffract light. It is shown that diffraction degrades the entanglement. LÄS MER

5. 14. TPV optics studies : on the use of non-imaging optics for improvement of edge filter performance in thermophotovoltaic applications

   Författare :Eva Lindberg; Högskolan Dalarna; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

7. 15. Nanofabrication of Diffractive Soft X-ray Optics

   Författare :Magnus Lindblom; Hans M. Hertz; Erik H. Anderson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanofabrication; Zone plate; x-ray; diffractive x-ray optics; x-ray microscopy; Optics; Optik; Physics; Fysik;

   Sammanfattning : This thesis summarizes the present status of the nanofabrication of diffractive optics, i.e. zone plates, and test objects for soft x-ray microscopy at KTH. The emphasis is on new and improved fabrication processes for nickel and germanium zone plates. LÄS MER