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Opt Express. 2008 Jun 23;16(13):9829-37.

Controlled sub-nanometer tuning of photonic crystal resonator by carbonaceous nano-dots.

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  • 1Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea.


We propose and demonstrate a scheme that enables spectral tuning of a photonic crystal high-quality resonant mode, in steps finer than 0.2 nm, via electron beam induced deposition of carbonaceous nano-dots. The position and size of a nano-dot with a diameter of <100 nm are controlled to an accuracy on the order of nanometers. The possibility of selective modal tuning is also demonstrated by placing nano-dots at locations pre-determined by theoretical computation. The lasing threshold of a photonic crystal mode tends to increase when a nano-dot is grown at the point of strong electric field, showing the absorptive nature of the nano-dot.

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