Thursday, 3 May 2012

THz papers at CLEO 2012

For  anyone who is interested in terahertz applications and is attending CLEO 2012 next week


6-11th May 2012


San Jose Convention Center, San Jose, CA


For information see http://www.cleoconference.org/home.aspx


The following terahertz talks may be of interest - if anyone would like to write a report on these terahertz sessions at this conference we will be happy to post here.  We have selected these talks just out of interest.



TITLE: Generation of ultrabroadband coherent infrared wave with 200 THz bandwidth using air plasma driven by intense sub 10 fs pulses


AUTHORS (FIRST NAME, LAST NAME): Eiichi Matsubara1, Masaya Nagai1, Masaaki Ashida1
INSTITUTIONS (ALL): 1. Osaka university, Toyonaka, Japan.
ABSTRACT BODY:
Abstract (35 Word Limit): We demonstrated the generation of infrared wave exceeding 200 THz through air plasma using sub-10-fs pulses produced by hollow fiber compression. Electro-optic sampling with 20-μm GaSe crystal assures the wave is coherent.


TITLE: High Field THz Pulse Generation and Nonlinear THz Dynamics

AUTHORS (FIRST NAME, LAST NAME): Frank Hegmann1
INSTITUTIONS (ALL): 1. University of Alberta, Alberta, AB, Canada.
ABSTRACT BODY:
Abstract (35 Word Limit): The generation of intense single-cycle THz pulses and their application to the study of ultrafast nonlinear THz dynamics in semiconductors, such as terahertz-pulse-induced intervalley scattering and hot electron effective mass anisotropy, are described.


TITLE: Highly efficient generation of single-cycle MV/cm THz pulses in organic crystals

AUTHORS (FIRST NAME, LAST NAME): Clemens Ruchert1, Carlo Vicario1, Fernando Ardana1, Christoph P. Hauri1
INSTITUTIONS (ALL): 1. Paul Scherrer Institute, Villigen PSI, Switzerland.
ABSTRACT BODY:
Abstract (35 Word Limit): We present the generation of high-power single-cycle THz pulses in organic salt crystals. Broadband THz radiation with MV/cm electric field strength is produced by optical rectification driven with a powerful femtosecond optical parametric amplifier.

TITLE: Fiber Drawn 2D Polymeric Photonic Crystal THz Filters

AUTHORS (FIRST NAME, LAST NAME): Matthias Stecher1, 4, Christian Jansen1, Mehdi Ahmadi-Boroujeni1, Richard Lwin2, Alessio Stefani3, Ole Bang3, Martin Koch1, Graham E. Town4
INSTITUTIONS (ALL): 1. AG Exp. Halbleiterphysik, Philipps-Universität Marburg, Marburg, Germany.
2. Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, Sydney, NSW, Australia.
3. DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark.
4. Department of Electronic Engineering, Macquarie University, Sydney, NSW, Australia.
ABSTRACT BODY:
Abstract (35 Word Limit): We report on polymeric 2D photonic crystal filters for THz frequencies fabricated by a standard fiber drawing technique. The frequency and angle dependent transmission spectra were characterized in a pulsed terahertz (THz) time domain spectrometer.

TITLE: THz control of matter states: Coherent excitons beyond the Rabi-splitting

AUTHORS (FIRST NAME, LAST NAME): Benjamin Ewers1, Niko S. Koester1, Ronja Woscholski1, Martin Koch1, Sangam Chatterjee1, Galina Khitrova2, Hyatt M. Gibbs2, Andrea C. Klettke1, Mackillo Kira1, Stephan W. Koch1
INSTITUTIONS (ALL): 1. Faculty of Physics and Materials Sciences Center, Philipps-Universität Marburg, Marburg, Germany.
2. College of Optical Sciences, The University of Arizona, Tucson, AZ, United States.
ABSTRACT BODY:
Abstract (35 Word Limit): We investigate the interaction of strong single-cycle THz pulses with a coherent excitonic population, observing the transition from Rabi flopping of the 1s-2p transition to multi THz-photon ionization with increasing field strength.

TITLE: Nonlinear THz spectroscopy of graphene

AUTHORS (FIRST NAME, LAST NAME): Pamela Bowlan1, Elias Martinez-Moreno1, Klaus Reimann1, Michael Woerner1, Thomas Elsaesser1
INSTITUTIONS (ALL): 1. Max-Born-Institut, Berlin, Germany.
ABSTRACT BODY:
Abstract (35 Word Limit): Carrier dynamics in graphene at low energies are studied using two-dimensional THz spectroscopy. Pump-probe signals much faster than the acoustic phonon energy are observed due to a combination of intra- and interband absorption.

TITLE: THz Metrological Traceability and Suitable Detectors

AUTHORS (FIRST NAME, LAST NAME): Ralf Müller1, Werner Bohmeyer2, Karsten Lange2, Andreas Steiger1
INSTITUTIONS (ALL): 1. Physikalisch-Technische Bundesanstalt (PTB), Berlin, Berlin, Germany.
2. Sensor- und Lasertechnik (SLT), Neuenhagen, Brandenburg, Germany.
ABSTRACT BODY:
Abstract (35 Word Limit): PTB, the metrology institute of Germany, operates the worldwide first and still unique THz detector calibration facility traceable to SI. A project in cooperation with SLT company is dedicated to develop suitable pyroelectric THz detectors.