Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3270525
Keywords
cadmium compounds; fluorescence; high-speed optical techniques; II-VI semiconductors; photoluminescence; photonic crystals; semiconductor quantum dots; silicon compounds; two-photon processes
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Funding
- National Nature Science Foundation of China [60537010, 60736037, 60877030]
- National High Technology Research and Development Program of China [2009AA03Z406]
- Grant-in-Aid for Scientific Research [20510112]
- Grants-in-Aid for Scientific Research [20510112] Funding Source: KAKEN
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Two-photon excited fluorescence from CdSe quantum dots on a two-dimensional SiN photonic crystal surface is investigated by using a femtosecond laser. By using a photonic crystal, a 90-fold enhancement in the two-photon excited fluorescence in the vertical direction is achieved. This is the highest enhancement achieved so far in the two-photon excited fluorescence in the vertical direction. The mechanism of the enhancement for two-photon excited fluorescence from quantum dots on photonic crystals is analyzed.
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