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Near-Full Current Dynamic Range THz Quantum Cascade Laser Frequency Comb
The present study proposes a terahertz quantum cascade laser frequency comb (THz QCL FC) with a semi-insulated surface plasma waveguide characterized by a low threshold current density, high power and a wide current dynamic range. The gain dispersion value and the nonlinear susceptibility were optim...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9964135/ https://www.ncbi.nlm.nih.gov/pubmed/36838173 http://dx.doi.org/10.3390/mi14020473 |
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author | Ma, Yu Li, Weijiang Li, Yuanyuan Liu, Junqi Zhuo, Ning Yang, Ke Zhang, Jinchuan Zhai, Shenqiang Liu, Shuman Wang, Lijun Liu, Fengqi |
author_facet | Ma, Yu Li, Weijiang Li, Yuanyuan Liu, Junqi Zhuo, Ning Yang, Ke Zhang, Jinchuan Zhai, Shenqiang Liu, Shuman Wang, Lijun Liu, Fengqi |
author_sort | Ma, Yu |
collection | PubMed |
description | The present study proposes a terahertz quantum cascade laser frequency comb (THz QCL FC) with a semi-insulated surface plasma waveguide characterized by a low threshold current density, high power and a wide current dynamic range. The gain dispersion value and the nonlinear susceptibility were optimized based on the combination of a hybrid bound-to-continuum active region with a semi-insulated surface plasmon waveguide. Without any extra dispersion compensator, stable frequency comb operation within a current dynamic range of more than 97% of the total was revealed by the intermode beat note map. Additionally, a total comb spectral emission of about 300 GHz centered around 4.6 THz was achieved for a 3 mm long and 150 µm wide device. At 10 K, a maximum output power of 22 mW was obtained with an ultra-low threshold current density of 64.4 A·cm(−2). |
format | Online Article Text |
id | pubmed-9964135 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-99641352023-02-26 Near-Full Current Dynamic Range THz Quantum Cascade Laser Frequency Comb Ma, Yu Li, Weijiang Li, Yuanyuan Liu, Junqi Zhuo, Ning Yang, Ke Zhang, Jinchuan Zhai, Shenqiang Liu, Shuman Wang, Lijun Liu, Fengqi Micromachines (Basel) Article The present study proposes a terahertz quantum cascade laser frequency comb (THz QCL FC) with a semi-insulated surface plasma waveguide characterized by a low threshold current density, high power and a wide current dynamic range. The gain dispersion value and the nonlinear susceptibility were optimized based on the combination of a hybrid bound-to-continuum active region with a semi-insulated surface plasmon waveguide. Without any extra dispersion compensator, stable frequency comb operation within a current dynamic range of more than 97% of the total was revealed by the intermode beat note map. Additionally, a total comb spectral emission of about 300 GHz centered around 4.6 THz was achieved for a 3 mm long and 150 µm wide device. At 10 K, a maximum output power of 22 mW was obtained with an ultra-low threshold current density of 64.4 A·cm(−2). MDPI 2023-02-18 /pmc/articles/PMC9964135/ /pubmed/36838173 http://dx.doi.org/10.3390/mi14020473 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Ma, Yu Li, Weijiang Li, Yuanyuan Liu, Junqi Zhuo, Ning Yang, Ke Zhang, Jinchuan Zhai, Shenqiang Liu, Shuman Wang, Lijun Liu, Fengqi Near-Full Current Dynamic Range THz Quantum Cascade Laser Frequency Comb |
title | Near-Full Current Dynamic Range THz Quantum Cascade Laser Frequency Comb |
title_full | Near-Full Current Dynamic Range THz Quantum Cascade Laser Frequency Comb |
title_fullStr | Near-Full Current Dynamic Range THz Quantum Cascade Laser Frequency Comb |
title_full_unstemmed | Near-Full Current Dynamic Range THz Quantum Cascade Laser Frequency Comb |
title_short | Near-Full Current Dynamic Range THz Quantum Cascade Laser Frequency Comb |
title_sort | near-full current dynamic range thz quantum cascade laser frequency comb |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9964135/ https://www.ncbi.nlm.nih.gov/pubmed/36838173 http://dx.doi.org/10.3390/mi14020473 |
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