TY - GEN
T1 - Slow terahertz light via resonant tunneling induced transparency in quantum well heterostructures
AU - Tzenov, Petar
AU - Jirauschek, Christian
N1 - Publisher Copyright:
© 2017 SPIE.
PY - 2017
Y1 - 2017
N2 - We present a theoretical and computational investigation of the possibility of achieving slow terahertz light by exploiting the tunneling induced transparency (TIT) effect in suitably engineered quantum well heterostructure devices. We design such a meta-material and show how TIT could lead to large values of the group refractive index, unfortunately at the cost of strong field attenuation due to decoherence. As a suitable alternative, we propose a grating, consisting of a buffer and a quantum cascade amplifier regions, arranged in such a way as to achieve slow light and simultaneously compensate for the large signal losses. Our calculations show that a binary message could be reliably transmitted through this system, with non-critical reduction of the signal to noise ratio, as we achieve a slow-down factor of more than 70.
AB - We present a theoretical and computational investigation of the possibility of achieving slow terahertz light by exploiting the tunneling induced transparency (TIT) effect in suitably engineered quantum well heterostructure devices. We design such a meta-material and show how TIT could lead to large values of the group refractive index, unfortunately at the cost of strong field attenuation due to decoherence. As a suitable alternative, we propose a grating, consisting of a buffer and a quantum cascade amplifier regions, arranged in such a way as to achieve slow light and simultaneously compensate for the large signal losses. Our calculations show that a binary message could be reliably transmitted through this system, with non-critical reduction of the signal to noise ratio, as we achieve a slow-down factor of more than 70.
KW - Quantum wells
KW - Slow light
KW - Tunneling induced transparency
UR - http://www.scopus.com/inward/record.url?scp=85017342439&partnerID=8YFLogxK
U2 - 10.1117/12.2262367
DO - 10.1117/12.2262367
M3 - Conference contribution
AN - SCOPUS:85017342439
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - 19th International Conference and School on Quantum Electronics
A2 - Gateva, Sanka
A2 - Dreischuh, Tanja
A2 - Serafetinides, Alexandros
A2 - Daskalova, Albena
PB - SPIE
T2 - 19th International Conference and School on Quantum Electronics: Laser Physics and Applications, ICSQE 2016
Y2 - 26 September 2016 through 30 September 2016
ER -