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100 % amplitude modulation of an external cavity terahertz QCL using an optoelectronic chopper based on metamaterials and graphene

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100 % amplitude modulation of an external cavity terahertz QCL using an optoelectronic chopper based on metamaterials and graphene. / Kindness, S. J.; Jessop, D. S.; Wei, B. et al.
2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference. OSA - The Optical Society, 2017. CB_2_4 (Optics InfoBase Conference Papers; Vol. Part F82-CLEO_Europe 2017).

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paperpeer-review

Harvard

Kindness, SJ, Jessop, DS, Wei, B, Wallis, R, Kamboj, VS, Xiao, L, Ren, Y, Braeuninger-Weimer, P, Hofmann, S, Beere, HE, Ritchie, DA & Degl'lnnocenti, R 2017, 100 % amplitude modulation of an external cavity terahertz QCL using an optoelectronic chopper based on metamaterials and graphene. in 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference., CB_2_4, Optics InfoBase Conference Papers, vol. Part F82-CLEO_Europe 2017, OSA - The Optical Society, The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017, Munich, Germany, 25/06/17.

APA

Kindness, S. J., Jessop, D. S., Wei, B., Wallis, R., Kamboj, V. S., Xiao, L., Ren, Y., Braeuninger-Weimer, P., Hofmann, S., Beere, H. E., Ritchie, D. A., & Degl'lnnocenti, R. (2017). 100 % amplitude modulation of an external cavity terahertz QCL using an optoelectronic chopper based on metamaterials and graphene. In 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference Article CB_2_4 (Optics InfoBase Conference Papers; Vol. Part F82-CLEO_Europe 2017). OSA - The Optical Society.

Vancouver

Kindness SJ, Jessop DS, Wei B, Wallis R, Kamboj VS, Xiao L et al. 100 % amplitude modulation of an external cavity terahertz QCL using an optoelectronic chopper based on metamaterials and graphene. In 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference. OSA - The Optical Society. 2017. CB_2_4. (Optics InfoBase Conference Papers).

Author

Kindness, S. J. ; Jessop, D. S. ; Wei, B. et al. / 100 % amplitude modulation of an external cavity terahertz QCL using an optoelectronic chopper based on metamaterials and graphene. 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference. OSA - The Optical Society, 2017. (Optics InfoBase Conference Papers).

Bibtex

@inproceedings{e14697f0ebb64187884af8176f6d8535,
title = "100 % amplitude modulation of an external cavity terahertz QCL using an optoelectronic chopper based on metamaterials and graphene",
abstract = "The continuous development of terahertz (THz) sources has opened up many potential applications in spectroscopy, imaging and communications. One popular THz source is the quantum cascade laser (QCL), which has many desirable properties including compactness and high output power with a narrow emission frequency. For such a source to be successfully integrated into a THz communication system, it is necessary to have control over the amplitude, frequency and phase. For wireless communication purposes, amplitude modulators must have a reasonable modulation depth and be capable of fast modulation speeds to take full advantage of the greater bandwidth opened up by using a THz carrier wave. To this purpose, we have developed optoelectronic split ring resonator (SRR) and graphene amplitude modulators which have been combined with a THz QCL thus realising an external cavity set-up which uses the SRR/graphene devices to efficiently modulate the light feedback into the laser cavity. The SRR/graphene device is lithographically designed to have maximum reflectivity at the QCL emission frequency (2.9 THz) and the graphene acts as a variable dampener, capable of electrically modulating the reflectivity. Similar SRR/graphene device architectures have been used previously for amplitude modulation by varying the reflection from a standard CW QCL output, achieving modulation speeds >100 MHz with a modulation depth limited to around 20 %",
author = "Kindness, {S. J.} and Jessop, {D. S.} and B. Wei and R. Wallis and Kamboj, {V. S.} and L. Xiao and Y. Ren and P. Braeuninger-Weimer and S. Hofmann and Beere, {H. E.} and Ritchie, {D. A.} and R. Degl'lnnocenti",
year = "2017",
month = jun,
day = "29",
language = "English",
series = "Optics InfoBase Conference Papers",
publisher = "OSA - The Optical Society",
booktitle = "2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference",
note = "The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017 ; Conference date: 25-06-2017 Through 29-06-2017",

}

RIS

TY - GEN

T1 - 100 % amplitude modulation of an external cavity terahertz QCL using an optoelectronic chopper based on metamaterials and graphene

AU - Kindness, S. J.

AU - Jessop, D. S.

AU - Wei, B.

AU - Wallis, R.

AU - Kamboj, V. S.

AU - Xiao, L.

AU - Ren, Y.

AU - Braeuninger-Weimer, P.

AU - Hofmann, S.

AU - Beere, H. E.

AU - Ritchie, D. A.

AU - Degl'lnnocenti, R.

PY - 2017/6/29

Y1 - 2017/6/29

N2 - The continuous development of terahertz (THz) sources has opened up many potential applications in spectroscopy, imaging and communications. One popular THz source is the quantum cascade laser (QCL), which has many desirable properties including compactness and high output power with a narrow emission frequency. For such a source to be successfully integrated into a THz communication system, it is necessary to have control over the amplitude, frequency and phase. For wireless communication purposes, amplitude modulators must have a reasonable modulation depth and be capable of fast modulation speeds to take full advantage of the greater bandwidth opened up by using a THz carrier wave. To this purpose, we have developed optoelectronic split ring resonator (SRR) and graphene amplitude modulators which have been combined with a THz QCL thus realising an external cavity set-up which uses the SRR/graphene devices to efficiently modulate the light feedback into the laser cavity. The SRR/graphene device is lithographically designed to have maximum reflectivity at the QCL emission frequency (2.9 THz) and the graphene acts as a variable dampener, capable of electrically modulating the reflectivity. Similar SRR/graphene device architectures have been used previously for amplitude modulation by varying the reflection from a standard CW QCL output, achieving modulation speeds >100 MHz with a modulation depth limited to around 20 %

AB - The continuous development of terahertz (THz) sources has opened up many potential applications in spectroscopy, imaging and communications. One popular THz source is the quantum cascade laser (QCL), which has many desirable properties including compactness and high output power with a narrow emission frequency. For such a source to be successfully integrated into a THz communication system, it is necessary to have control over the amplitude, frequency and phase. For wireless communication purposes, amplitude modulators must have a reasonable modulation depth and be capable of fast modulation speeds to take full advantage of the greater bandwidth opened up by using a THz carrier wave. To this purpose, we have developed optoelectronic split ring resonator (SRR) and graphene amplitude modulators which have been combined with a THz QCL thus realising an external cavity set-up which uses the SRR/graphene devices to efficiently modulate the light feedback into the laser cavity. The SRR/graphene device is lithographically designed to have maximum reflectivity at the QCL emission frequency (2.9 THz) and the graphene acts as a variable dampener, capable of electrically modulating the reflectivity. Similar SRR/graphene device architectures have been used previously for amplitude modulation by varying the reflection from a standard CW QCL output, achieving modulation speeds >100 MHz with a modulation depth limited to around 20 %

M3 - Conference contribution/Paper

AN - SCOPUS:85039920088

T3 - Optics InfoBase Conference Papers

BT - 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference

PB - OSA - The Optical Society

T2 - The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017

Y2 - 25 June 2017 through 29 June 2017

ER -