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Low Power Consumption Substrate-Emitting DFB Quantum Cascade Lasers

In the present work, an ultra-low power consumption substrate-emitting distributed feedback (DFB) quantum cascade laser (QCL) was developed. The continuous-wave (CW) threshold power dissipation is reduced to 0.43 W at 25 °C by shortening the cavity length to 0.5 mm and depositing high-reflectivity (...

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Autores principales: Liu, Chuan-Wei, Zhang, Jin-Chuan, Jia, Zhi-Wei, Zhuo, Ning, Zhai, Shen-Qiang, Wang, Li-Jun, Liu, Jun-Qi, Liu, Shu-Man, Liu, Feng-Qi, Wang, Zhan-Guo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5581747/
https://www.ncbi.nlm.nih.gov/pubmed/28866815
http://dx.doi.org/10.1186/s11671-017-2281-8
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author Liu, Chuan-Wei
Zhang, Jin-Chuan
Jia, Zhi-Wei
Zhuo, Ning
Zhai, Shen-Qiang
Wang, Li-Jun
Liu, Jun-Qi
Liu, Shu-Man
Liu, Feng-Qi
Wang, Zhan-Guo
author_facet Liu, Chuan-Wei
Zhang, Jin-Chuan
Jia, Zhi-Wei
Zhuo, Ning
Zhai, Shen-Qiang
Wang, Li-Jun
Liu, Jun-Qi
Liu, Shu-Man
Liu, Feng-Qi
Wang, Zhan-Guo
author_sort Liu, Chuan-Wei
collection PubMed
description In the present work, an ultra-low power consumption substrate-emitting distributed feedback (DFB) quantum cascade laser (QCL) was developed. The continuous-wave (CW) threshold power dissipation is reduced to 0.43 W at 25 °C by shortening the cavity length to 0.5 mm and depositing high-reflectivity (HR) coating on both facets. As far as we know, this is the recorded threshold power dissipation of QCLs in the same conditions. Single-mode emission was achieved by employing a buried second-order grating. Mode-hop free emission can be observed within a wide temperature range from 15 to 105 °C in CW mode. The divergence angles are 22.5(o) and 1.94(o) in the ridge-width direction and cavity-length direction, respectively. The maximum optical power in CW operation was 2.4 mW at 25 °C, which is sufficient to spectroscopy applications.
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spelling pubmed-55817472017-09-19 Low Power Consumption Substrate-Emitting DFB Quantum Cascade Lasers Liu, Chuan-Wei Zhang, Jin-Chuan Jia, Zhi-Wei Zhuo, Ning Zhai, Shen-Qiang Wang, Li-Jun Liu, Jun-Qi Liu, Shu-Man Liu, Feng-Qi Wang, Zhan-Guo Nanoscale Res Lett Nano Express In the present work, an ultra-low power consumption substrate-emitting distributed feedback (DFB) quantum cascade laser (QCL) was developed. The continuous-wave (CW) threshold power dissipation is reduced to 0.43 W at 25 °C by shortening the cavity length to 0.5 mm and depositing high-reflectivity (HR) coating on both facets. As far as we know, this is the recorded threshold power dissipation of QCLs in the same conditions. Single-mode emission was achieved by employing a buried second-order grating. Mode-hop free emission can be observed within a wide temperature range from 15 to 105 °C in CW mode. The divergence angles are 22.5(o) and 1.94(o) in the ridge-width direction and cavity-length direction, respectively. The maximum optical power in CW operation was 2.4 mW at 25 °C, which is sufficient to spectroscopy applications. Springer US 2017-09-02 /pmc/articles/PMC5581747/ /pubmed/28866815 http://dx.doi.org/10.1186/s11671-017-2281-8 Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Liu, Chuan-Wei
Zhang, Jin-Chuan
Jia, Zhi-Wei
Zhuo, Ning
Zhai, Shen-Qiang
Wang, Li-Jun
Liu, Jun-Qi
Liu, Shu-Man
Liu, Feng-Qi
Wang, Zhan-Guo
Low Power Consumption Substrate-Emitting DFB Quantum Cascade Lasers
title Low Power Consumption Substrate-Emitting DFB Quantum Cascade Lasers
title_full Low Power Consumption Substrate-Emitting DFB Quantum Cascade Lasers
title_fullStr Low Power Consumption Substrate-Emitting DFB Quantum Cascade Lasers
title_full_unstemmed Low Power Consumption Substrate-Emitting DFB Quantum Cascade Lasers
title_short Low Power Consumption Substrate-Emitting DFB Quantum Cascade Lasers
title_sort low power consumption substrate-emitting dfb quantum cascade lasers
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5581747/
https://www.ncbi.nlm.nih.gov/pubmed/28866815
http://dx.doi.org/10.1186/s11671-017-2281-8
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