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Improved light extraction from emitters in high refractive index materials using solid immersion lenses
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.ORCID iD: 0000-0002-2082-9583
2002 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 92, no 2, 660-665 p.Article in journal (Refereed) Published
Abstract [en]

Solid immersion lenses (SILs) are optically transparent, truncated spheres, brought in contact with a sample to be imaged. The combination of a conventional optical microscope and a SIL results in a highly effective numerical aperture of the imaging system that can improve the resolution. In addition, when imaging high refractive index samples, such as semiconductors, the light collection efficiency can be increased drastically. We investigate the collection efficiency as a function of the SILs geometry and refractive index, using an analytical expression for the light dispersion through an arbitrarily truncated sphere. The theoretical results are compared to experimental measurements obtained on single quantum dots and are found to be in good agreement.

Place, publisher, year, edition, pages
2002. Vol. 92, no 2, 660-665 p.
Keyword [en]
gaas quantum-wells, numerical aperture, single photons, spontaneous emission, spatial-resolution, microcavity, dot, microscope, time
URN: urn:nbn:se:kth:diva-21676DOI: 10.1063/1.1487913ISI: 000176600000003OAI: diva2:340374
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Björk, Gunnar
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