Nano-Optical Control of Hot-Spot Field Superenhancement on a Corrugated Silver Surface

Aeschlimann M, Brixner T, Cunovic S, Fischer A, Melchior P, Pfeiffer W, Rohmer M, Schneider C, Strüber C, Tuchscherer P, Voronine D (2012)
IEEE Journal of Selected Topics in Quantum Electronics 18(1): 275-282.

Journal Article | Published | English

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Abstract
Coherent control of ultrafast nano-optical excitations of a corrugated silver surface is demonstrated by means of predetermined few-parameter scans and adaptive polarization laser pulse shaping. "Hot spots" in the multiphoton photoemission signals are enhanced and manipulated with a high contrast. Switching between separated and closely spaced hot spots is shown. The latter allows controlling the shape of hot spots and yields improved nanofocusing and "purification" of the photoemission signals. Complex pulse shapes were obtained in adaptive optimizations whose features were reproducible in repeated runs. Predetermined few-parameter control scans provide insight into the interpretation of optimal pulse shapes. The results indicate the existence of long coherence lifetimes on a corrugated silver surface. This combination of collective strong nanoplasmonic near-field enhancement and long-lived coherence may be used to achieve an even stronger field enhancement ("superenhancement") making these hot spots ideal candidates for future nanophotonic, spectroscopic, sensor and quantum information applications. In addition the observation of such long coherence lifetimes is relevant to the understanding of surface-enhanced spectroscopies such as single-molecule Raman spectroscopy.
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Aeschlimann M, Brixner T, Cunovic S, et al. Nano-Optical Control of Hot-Spot Field Superenhancement on a Corrugated Silver Surface. IEEE Journal of Selected Topics in Quantum Electronics. 2012;18(1):275-282.
Aeschlimann, M., Brixner, T., Cunovic, S., Fischer, A., Melchior, P., Pfeiffer, W., Rohmer, M., et al. (2012). Nano-Optical Control of Hot-Spot Field Superenhancement on a Corrugated Silver Surface. IEEE Journal of Selected Topics in Quantum Electronics, 18(1), 275-282.
Aeschlimann, M., Brixner, T., Cunovic, S., Fischer, A., Melchior, P., Pfeiffer, W., Rohmer, M., Schneider, C., Strüber, C., Tuchscherer, P., et al. (2012). Nano-Optical Control of Hot-Spot Field Superenhancement on a Corrugated Silver Surface. IEEE Journal of Selected Topics in Quantum Electronics 18, 275-282.
Aeschlimann, M., et al., 2012. Nano-Optical Control of Hot-Spot Field Superenhancement on a Corrugated Silver Surface. IEEE Journal of Selected Topics in Quantum Electronics, 18(1), p 275-282.
M. Aeschlimann, et al., “Nano-Optical Control of Hot-Spot Field Superenhancement on a Corrugated Silver Surface”, IEEE Journal of Selected Topics in Quantum Electronics, vol. 18, 2012, pp. 275-282.
Aeschlimann, M., Brixner, T., Cunovic, S., Fischer, A., Melchior, P., Pfeiffer, W., Rohmer, M., Schneider, C., Strüber, C., Tuchscherer, P., Voronine, D.: Nano-Optical Control of Hot-Spot Field Superenhancement on a Corrugated Silver Surface. IEEE Journal of Selected Topics in Quantum Electronics. 18, 275-282 (2012).
Aeschlimann, Martin, Brixner, Tobias, Cunovic, Stefan, Fischer, Alexander, Melchior, Pascal, Pfeiffer, Walter, Rohmer, Martin, Schneider, Christian, Strüber, Christian, Tuchscherer, Philip, and Voronine, Dmitri. “Nano-Optical Control of Hot-Spot Field Superenhancement on a Corrugated Silver Surface”. IEEE Journal of Selected Topics in Quantum Electronics 18.1 (2012): 275-282.
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