Dr. Aji A. Anappara

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University of Konstanz
Fachbereich Physik
Modern Optics and Quantum Electronics
(Supported by Alexander von Humboldt-Foundation)Appointed: 2008
Professional Headshot of Aji A. Anappara

Mailing Address

Fachbereich Physik
Emmy Noether Gruppe Tera
University of Konstanz
Universitaetsstrasse 10
Konstanz, 78464
Germany

Contact Information

aji.anappara@sns.it

Qualifications

Ph.D., Scuola Normale Superiore (Italy), Physics, 2008.
M. Phil, University of Kerala, Physics, 2002.
B. Ed, University of Kerala, Physical Science, 2001.
M.Sc., University of Kerala, Physics, 2000.
B.Sc., University of Kerala, Physics, 1998.

Expertise and Research Interests

My research experience is in two different areas:

1. Semiconductor optics: Realizing the unprecedented light-matter coupling christened as "ultra-strong coupling" in the intersubband resonators. Femtosecond manipulation of light-matter interaction in intersubband microcavities.

2. Functional nanoceramics and dielectrics: Synthesis and characterization of Alumina-silver(metal-ceramic) nanocomposites and investigation of the electrical properties employing electrochemical impedance spectroscopy and thermal properties using photo-acoustic technique.

Probing the surface hydration-dehydration and their impact in the electrical response of low-dielectric constant silica aerogels using impedance spectroscopy.

Future Research

My future research interests include:

* Optical resonators
* Light-matter interaction
* Single photon detectors for mid-infrared & THz frequencies
* Optical storage and manipulation in photonic crystal nanocavities
* Bose-Einstein condensation of intersubband polaritons

Industrial Relevance

1. All-optical control of intersubband polariton coupling is a novel concept for the realization of femtosecond modulators for quantum information.

2.The strong-coupling of intersubband absorption with confined electromagnetic modes of a waveguide can be utilized to realize QWIPs (Quantum Well Infrared Photodetectors) with very low doping density and still having very good absorption; which may lead to high temperature operation of QWIPs.

Keywords

COS Keywords:

Composite Materials, Condensed Matter Physics, Dielectric Materials, Nanostructured Materials, Nanotechnology, Optics, Semiconductors.

Additional Terms:

Intersubband Polaritonics, Quantum Optics, Semiconductor Microcavities.

Languages

(Reading, Writing, Speaking)

English: (Fluent, Fluent, Fluent)
Malayalam: (Fluent, Fluent, Fluent)
Italian: (Basic, Basic, None)

Publications

  • Sajan D George, Aji A. Anappara, K. G. K. Warrier, P. R. S. Warrier, P. Radhakrishnan, V. P. N. Nampoori, C. P. G. Vallabhan (2008) Photoacoustic thermal characterization of Al2O3 - Ag ceramic nanocomposites, Materials Chemistry and Physics, 111 (1), 38
  • Aji A. Anappara, Alessandro Tredicucci, Fabio Beltram, Giorgio Biasiol, Lucia Sorba (2008) Tailoring light-matter interaction in intersubband microcavities, Physica E, 40 (6), 1906
  • Aji A. Anappara, Alessandro Tredicucci, Fabio Beltram, Giorgio Biasiol, Lucia Sorba, Simone De Liberato, Cristiano Ciuti (2007) Cavity polaritons from excited-subband transitions, Applied Physics Letters, 91, 231118
  • Aji A. Anappara, Alessandro Tredicucci, Fabio Beltram, Giorgio Biasiol, Lucia Sorba, Jan Devenson, David Barate, Roland Teissier (2007) Controlling polariton coupling in intersubband microcavities, International Conference on the Physics of Semiconductors, ICPS 2006, AIP Conf. Proc. 893, 523
  • Aji A. Anappara, David Barate, Alessandro Tredicucci, Jan Devenson, Roland Teissier, Alexei Baranov (2007) Giant intersubband polariton splitting in InAs/AlSb microcavities, Solid State Communications, 142 (6), 311
  • Aji A. Anappara, Alessandro Tredicucci, Fabio Beltram, Giorgio Biasiol, Lucia Sorba (2006) Tunnel-assisted manipulation of intersubband polaritons in asymmetric coupled quantum wells, Applied Physics Letters, 89 (17), 171109
  • Aji A. Anappara, Alessandro Tredicucci, Giorgio Biasiol, Lucia Sorba (2005) Electrical control of polariton coupling in intersubband microcavities, Applied Physics Letters, 87 (5), 51105
  • Aji A. Anappara, S. Rajeshkumar, P. Mukundan, P. R. S. Warrier, S. K. Ghosh, K. G. K. Warrier (2004) Impedance spectroscopic studies of sol-gel derived subcritically dried silica aerogels, Acta Materialia, 52 (2), 369
  • Sajan D. George, Aji A. Anappara, K. G. K. Warrier, P. Radhakrishnan, C. P. G. Vallabhan, V. P. N. Nampoori (2003) Laser-induced thermal characterization of nano Ag metal dispersed ceramic alumina matrix, Nanotechnology, USA, SPIE-Int. Soc. Opt. Eng, 5 pages
  • Aji A. Anappara, S. K. Ghosh, P. R. S. Warrier, K. G. K. Warrier, W. Wunderlich (2003) Impedance spectral studies of sol-gel alumina-silver nanocomposites, Acta Materialia, 51 (12), 3511

Profile Details

Last Updated: 10/6/2008

COS Expertise ID #1214636
Reference this profile directly: http://myprofile.cos.com/anappara