TOM 1 - Silicon Photonics and Guided-Wave Optics
TOM 2 - Computational, Adaptive and Freeform Optics
TOM 3 - Optical System Design, Tolerancing and Manufacturing
TOM 4 - Bio-Medical Optics
TOM 5 - Resonant Nanophotonics
TOM 6 - Optical Materials: crystals, thin films, organic molecules and polymers, syntheses, characterization and devices
TOM 7 - Thermal radiation and energy management
TOM 8 - Nonlinear and Quantum Optics
TOM 9 - Optics at Nanoscale (ONS)
TOM 10 - Optical Microsystems (OMS)
TOM 11 - Waves in Complex Photonic Media
TOM 12 - Optofluidics
TOM 13 - Ultrafast Optical Technologies and Applications
TOM 14 - Advances and Applications of Optics and Photonics
EU Project Session
Early Stage Researcher Session organised by SIOF
Grand Challenges of Photonics Session
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TOM13 S14: Ultrafast: Thz science and nonlinear optics
16:00 - 17:30
Session Chair: Konstantin Vodopyanov, Univ. Cent. Florida, United States of America
16:00 - 16:30 Invited ID: 478 / TOM13 S14: 1 TOM 13 Ultrafast Optical Technologies and Applications
Advances in high-average power ultrafast THz sources
Frank Wulf, Tim Vogel, Samira Mansourzadeh, Felix Fobbe, Denizhan Kesim, Martin Saraceno, Clara Saraceno
Ruhr University Bochum, Germany
Ultrafast laser-driven THz sources for time-domain spectroscopy are a ubiquitous tool in many fields of science and are even starting to penetrate industrial fields. Whereas enormous progress has been achieved in achieving ultra-broadband operation and very high fields in the last decades, average power has for very long remained a bottleneck for many applications in spectroscopy and sensing. this talk, we will review recent progress in the generation and application of high-average power broadband Terahertz pulsed sources at MHz repetition rates for time-domain spectroscopy.
16:30 - 16:45 ID: 179 / TOM13 S14: 2 TOM 13 Ultrafast Optical Technologies and Applications
Fiber-laser driven gas-plasma based generation of high-power THz radiation
Joachim Buldt1, Henning Stark1, Michael Mueller1, Christian Grebing1,2, César Jauregui1, Jens Limpert1,2,3
1Institute of Applied Physics, Jena, Germany; 2Fraunhofer Institute for Applied Optics and Precision Engineering, Jena, Germany; 3Helmholtz-Institute, Jena, Germany
We present the generation of broadband terahertz radiation with the two-color gas plasma scheme. Driven by a multipass cell compressed high-power fiber laser system at a repetition rate of 200 kHz an average power of 94 mW is generated. A measurement based on the air-biased coherent detection scheme is used to characterize the full bandwidth of the generated pulses. By using the full potential of the driving laser further scaling of the generated THz power towards watt-level average power can be expected in the near future.
16:45 - 17:00 ID: 233 / TOM13 S14: 3 TOM 13 Ultrafast Optical Technologies and Applications
Electro-Absorption Modulation in colloidal Quantum Dots directly driven by MV/cm-THz Fields
Claudia Gollner1, Rokas Jutas1, Dimitry Dirin2,3, Simon Boehme2,3, Andrius Baltuška1,4, Maksym Kovalenko2,3
1TU Wien, Austria; 2Institute of Inorganic Chemistry, Switzerland; 3Empa-Swiss Federal Laboratories for Materials Science and Technology, Switzerland; 4Center for Physical Sciences & Technology, Lithuania
We report on a direct all optical encoding of a free-space terahertz signal onto an optical signal probing the absorption of CdSe/CdS quantum dots. The ultrafast electro-absorption modulator is based on the quantum confined stark effect. This method demonstrates the ability for high speed modulators with transition rates in the Tbit/s range and extinction ratio exceeding 6 dB. An extreme change in transmission of more than 15% is measured, which is, to the best of our knowledge, the highest value ever reported for solution processed electro-absorption materials at room temperature.
17:00 - 17:30 Invited ID: 555 / TOM13 S14: 4 TOM 13 Ultrafast Optical Technologies and Applications
Time and frequency-resolved nonlinear optical spectroscopy with amplified femtosecond pulse bursts
TU Wien, Austria
We present the methods for controlled pulse burst amplification in a single and dual femtosecond regenerative amplifier that enable a plethora of third and higher-order nonlinear spectroscopic techniques. High-resolution time-delay scans and narrowband frequency sweeping is obtained without any mechanically moving parts.