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Dr Henkjan Gersen

Biography

Dr. Henkjan Gersen joined the Department of Physics at the University of Bristol in November 2006 as a Lecturer to work in the field of experimental nano-optics and was in 2008 promoted to Senior Lecturer. He started his research career in a research group (Prof. Niek van Hulst, Univ. of Twente, NL) that has an impressive track record in the field of single molecule detection and scanning probe microscopy. Dr Gerse made key contributions in the field of scanning probe microscopy in optics, as evidenced by a PhD obtained cum laude (highest honour) and publications in high impact journals (Science, Nature Physics, Nature Photonics and Phys. Rev. Lett).

Dr Gersen initially worked on single molecule detection with excitation mode NSOM, demonstrating that individual photons (from molecules) can be actively redistributed by nearby subwavelength sized metal objects[1]. He then continued at the Centre Suisse d'Electronique et Microtechnique, where he designed and constructed an NSOM to test novel cantilever type probes[2]. In his PhD he subsequently demonstrated a novel non-invasive collection mode NSOM technique to “visualize” optical pulses as they propagate through an optical device with both temporal and spatial resolution[3-5]. This led to the first time-resolved NSOM experiments in photonic crystal waveguides, revealing the propagation of ultraslow light[6] and the first direct measurements of their dispersion diagrams[7].

After his PhD studies HG was awarded a personal Marie Curie fellowship to work with Prof. Besenbacher (Aarhus Univ, Denmark) to study optical processes on molecular scales by combining STM-based approaches with optics[8-10]. HG has already developed considerable experience of managing resources and developing technology, having secured and managed funding for his Marie-Curie fellowship, a BBSRC Technology Development Research Initiative as well as an EPSRC first grant.

[1] H. Gersen, M.F. Garcia-Parajo, L. Novotny, J.A. Veerman, L. Kuipers, and N.F. van hulst, Phys. Rev. Lett. 25, 5312 (2000)

[2] R. Eckert, J.M. Freyland, H. Gersen, H. Heinzelmann, G. Schurmann, W. Noell, U. Staufer, and N.F. De Rooij, Appl. Phys. Lett. 77, 3696 (2000)

[3] M.L.M. Balistreri, H. Gersen, J.P. Korterik, L. Kuipers, and N.F. Van Hulst, Science, 294, 1080 (2001)

[4] H. Gersen, J.P. Korterik, N.F. Van Hulst and L. Kuipers, Phys. Rev. E, 68, 022604 (2003)

[5] H. Gersen, E.M.P.H. Van Dijk, J.P. Korterik, N.F. Van Hulst and L. Kuipers, Phys. Rev. E, 70, 066609 (2004)

[5] H. Gersen, D.J.W. Klunder, J.P. Korterik, A. Driessen, N.F. Van Hulst and L. Kuipers, Opt. Lett. 29, 1291 (2004)

[6] H. Gersen, T.J. Karle, R.J.P. Engelen, W. Bogaerts, J.P. Korterik, N.F. Van Hulst, T. Krauss, and L. Kuipers, Phys. Rev. Lett, 94, 073903 (2005)

[7] H. Gersen, T.J. Karle, R.J.P. Engelen, W. Bogaerts, J.P. Korterik, N.F. Van Hulst, T. Krauss, and L. Kuipers, Phys. Rev. Lett, 94, 123901 (2005)

[8] J.A. Miwa, S. Weigelt, H. Gersen, F. Besenbacher, F. Rosei, and T.R. Linderoth, J. Am. Chem. Soc, 128, 3164 (2006)

[9] H. Gersen, R. Schaub, W. Xu, I. Stensgaard, E. Laegsgaard, T.R. Linderoth., and F. Besenbacher,. Appl. Phys. Lett., 89, 264102 (2006) 

[10] Xu W, Dong MD, Gersen H, et al.  SMALL, 3 p854-858 (2007)