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to temporal compression of the NIR pulses, leading to higher
peak powers and, consequently, to more efficient nonlinear
frequency down-conversion illustrated in Fig 6b. The corresponding
terahertz spectral amplitudes are shown in Fig.
6c. The development of an efficient terahertz system with a
broadband spectral window can allow the access of molecular
resonance for sensing applications.
Conclusion
In this article, a novel approach for preparing ultrashort pulses
from gas-filled antiresonant fiber has been presented to achieve
efficient broadband terahertz generation and detection. The
linear properties of an evacuated waveguide become nonlinear
by tuning the gas pressure, creating a broadband terahertz
spectrum due to SPM. The approach is extremely interesting
due to the low cost of the technology and the simplicity of the
waveguide architecture. The development of efficient terahertz
systems with broadband spectral window can allow the access
of molecular resonances for ultrasensitive sensing applications.
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Jakeya Sultana (jakeyaete09ruet@gmail.com) received the
B.Sc. degree from Rajshahi University of Engineering and
Technology and the M.Sc. degree from Islamic University of
Technology, Bangladesh in 2014 and 2017, respectively. She is
a Ph.D. degree candidate in the School of Electrical and Electronic
Engineering of The University of Adelaide, Australia.
Her research interests include anti-resonant fibers for terahertz
application and super-continuum generation.
Md. Saiful Islam (M'18) is conducting Ph.D. research in the
School of Electrical and Electronic Engineering at The University
of Adelaide, Australia. His research interests include
optical fiber communication, PCF based terahertz waveguides,
terahertz sensors, surface plasmon resonance biosensors, topological
insulators, metamaterials for sensing applications.
Md. Selim Habib (S'13-SM'19) is an Assistant Professor of
Electrical and Computer Engineering at Florida Polytechnic
University in Lakeland, Florida. He received the B.Sc. and
M.Sc. degrees in electrical and electronic engineering from
Rajshahi University of Engineering Technology, Rajshahi, Bangladesh
in 2008 and 2012, respectively. He received the Ph.D.
degree in photonics engineering from Technical University of
Denmark, Copenhagen, Denmark, in 2017.
Mayank Kaushik as been a Research Scientist with the the
Defense Science and Technology Organisation, Edinburgh,
Australia since March 2012. He obtained a bachelor's degree in
electronic and telecommunication engineering in 2005 from the
NRI Institute of Information Science and Technology at Bhopal,
India. In 2006, he received his Master's Degree in Electronic and
Telecommunication Engineering (Adv.), from the University of
Adelaide in December 2007. In 2013, he received his PhD from the
University of Adelaide in Electrical and Electronic Engineering.
Alex Dinovitser (M'18) is a Postdoctoral Fellow at The University
of Adelaide, Australia. He has worked within the
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