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Folosirea ghidurilor de unda supraconductoare la detectia rapida si eficienta a fotonilor

Folosirea ghidurilor de unda supraconductoare la detectia rapida si eficienta a fotonilor. C unostinte : ecuatiile lui Maxwell , ecuatiile de unda ,supraconductori, ghiduri de unda , folosirea unor programe de calcul. Ghid de unda supraconductor-detector de fotoni.

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Folosirea ghidurilor de unda supraconductoare la detectia rapida si eficienta a fotonilor

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  1. Folosirea ghidurilor de unda supraconductoare la detectia rapida si eficienta a fotonilor Cunostinte: ecuatiile lui Maxwell, ecuatiile de unda,supraconductori, ghiduri de unda, folosirea unor programe de calcul

  2. Ghid de unda supraconductor-detector de fotoni • Detectia luminii are loc pentru frecvente mai mari decat decat o valoare data (gapul de frecventa in supraconductor) si consta in anihilarea unor perechi de electroni Cooper si crearea unui numar de electroni normali de doua ori mai mare decat numarul perechilor Cooper distruse.

  3. Schema unui detector de fotonicu un ghid de unda • Viteza de faza mare, lungimea de propagare mica

  4. Ghid de unda planar supraconductor

  5. Distributia spatiala a modului TM0 (optim-absorbtie mare in YBCO, absorbtie mica in aur ) dGOLD = 10nm 30nm

  6. Moduri ghidate • Modul fundamental TE0

  7. Moduri ghidate • Modul TE1

  8. Modul leaky • Modul leaky

  9. Ghiduri de unda supraconductoare • Sectiunea transversala

  10. Moduri • (a)TE0 (b) TM0

  11. Indicele de refractie efectiv

  12. Indicele de refractie efectiv

  13. Ghiduri de unda supraconductoare • Sectiunea transversala

  14. Moduri • (a)TM0 (b) TM1

  15. Puterea totala • Puterea totala

  16. Bibliografie • 1. V. A. Popescu, N. N. Puscas, G. Perrone, Sensitivity of traveling wave photodetectors in superconducting box-shaped plasmon-polariton optical waveguides, Journal of Superconductivity and Novel Magnetism, Published online, 31 July 2010 • 2. V. A. Popescu, N. N. Puscas, G. Perrone, Power absorbtion efficiency in superconducting box-shaped optical waveguides, Journal of Superconductivity and Novel Magnetism, Published online, 18 June 2010 • 4. V. A. Popescu, Increase the power absorbtion efficiency in superconducting waveguides, Optoelectronics and Advanced Materials – Rapid Communications (OAM-RC) Vol. 4, ISS 5, pag. 735 – 739, (2010) • 5. V. A. Popescu, N. N. Puscas, Comparison between TE and TM modes in superconducting multilayer optical planar waveguides, Optoelectronics and Advanced Materials – Rapid Communications (OAM-RC) Vol. 4, ISS 8, pag. 1102 – 1105, (2010) • and Advanced Materials (JOAM), Vol. 11, ISS 6, pag. 777-781, (2009) • 9. V. A. Popescu, N. N. Puscas, Determination of field profile in multiple superconducting quantum well optical planar waveguides, Optoelectronics and Advanced Materials – Rapid Communications (OAM-RC) Vol. 3, ISS 10, pag. 982 – 984, (2009) • 10. V. A. Popescu, Power absorption efficiency in plasmon - polariton optical superconducting planar and rib waveguides Optoelectronics and Advanced Materials – Rapid Communications (OAM-RC), Vol. 3, ISS 12, pag. 1259 – 1263, (2009). • Vasile Popescu vapopescu@yahoo.com

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