High Efficiency, Low Power-Consumption DFB Quantum Cascade Lasers Without Lateral Regrowth

Abstract Very low power-consumption distributed feedback (DFB) quantum cascade lasers (QCLs) at the wavelength around 4.9 μm were fabricated by conventional process without lateral regrowth of InP:Fe or using sidewall grating. Benefitted from the optimized materials and low waveguide loss, very low...

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Main Authors:	Zhi-Wei Jia, Li-Jun Wang, Jin-Chuan Zhang, Feng-Qi Liu, Yu-Hong Zhou, Dong-Bo Wang, Xue-Feng Jia, Ning Zhuo, Jun-Qi Liu, Shen-Qiang Zhai, Zhan-Guo Wang
Format:	Article
Language:	English
Published:	SpringerOpen 2017-04-01
Series:	Nanoscale Research Letters
Subjects:	Quantum cascade laser Distributed feedback Low power-consumption High efficiency
Online Access:	http://link.springer.com/article/10.1186/s11671-017-2064-2

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spelling	doaj-439ad019c880457f9dfde69749556a292020-11-24T21:14:33ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2017-04-011211510.1186/s11671-017-2064-2High Efficiency, Low Power-Consumption DFB Quantum Cascade Lasers Without Lateral RegrowthZhi-Wei Jia0Li-Jun Wang1Jin-Chuan Zhang2Feng-Qi Liu3Yu-Hong Zhou4Dong-Bo Wang5Xue-Feng Jia6Ning Zhuo7Jun-Qi Liu8Shen-Qiang Zhai9Zhan-Guo Wang10Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Key Laboratory of Low Dimensional Semiconductor Materials and DevicesKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Key Laboratory of Low Dimensional Semiconductor Materials and DevicesKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Key Laboratory of Low Dimensional Semiconductor Materials and DevicesKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Key Laboratory of Low Dimensional Semiconductor Materials and DevicesKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Key Laboratory of Low Dimensional Semiconductor Materials and DevicesKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Key Laboratory of Low Dimensional Semiconductor Materials and DevicesKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Key Laboratory of Low Dimensional Semiconductor Materials and DevicesKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Key Laboratory of Low Dimensional Semiconductor Materials and DevicesKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Key Laboratory of Low Dimensional Semiconductor Materials and DevicesKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Key Laboratory of Low Dimensional Semiconductor Materials and DevicesKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Key Laboratory of Low Dimensional Semiconductor Materials and DevicesAbstract Very low power-consumption distributed feedback (DFB) quantum cascade lasers (QCLs) at the wavelength around 4.9 μm were fabricated by conventional process without lateral regrowth of InP:Fe or using sidewall grating. Benefitted from the optimized materials and low waveguide loss, very low threshold current density of 0.5 kA/cm2 was obtained for a device with cavity length of 2 mm. Combined with the partial-high-reflection coating, the 1-mm-long DFB QCL achieved low power-consumption continuous wave (CW) operation up to 105 °C. The CW threshold power-consumptions were 0.72 and 0.78 W at 15 and 25 °C, respectively. The maximum CW output power was over 110 mW at 15 °C and still more than 35 mW at 105 °C. At 15 °C, wall-plug efficiency of 5.5% and slope efficiency of 1.8 W/A were deduced, which were very high for low power-consumption DFB QCLs.http://link.springer.com/article/10.1186/s11671-017-2064-2Quantum cascade laserDistributed feedbackLow power-consumptionHigh efficiency
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Zhi-Wei Jia Li-Jun Wang Jin-Chuan Zhang Feng-Qi Liu Yu-Hong Zhou Dong-Bo Wang Xue-Feng Jia Ning Zhuo Jun-Qi Liu Shen-Qiang Zhai Zhan-Guo Wang
spellingShingle	Zhi-Wei Jia Li-Jun Wang Jin-Chuan Zhang Feng-Qi Liu Yu-Hong Zhou Dong-Bo Wang Xue-Feng Jia Ning Zhuo Jun-Qi Liu Shen-Qiang Zhai Zhan-Guo Wang High Efficiency, Low Power-Consumption DFB Quantum Cascade Lasers Without Lateral Regrowth Nanoscale Research Letters Quantum cascade laser Distributed feedback Low power-consumption High efficiency
author_facet	Zhi-Wei Jia Li-Jun Wang Jin-Chuan Zhang Feng-Qi Liu Yu-Hong Zhou Dong-Bo Wang Xue-Feng Jia Ning Zhuo Jun-Qi Liu Shen-Qiang Zhai Zhan-Guo Wang
author_sort	Zhi-Wei Jia
title	High Efficiency, Low Power-Consumption DFB Quantum Cascade Lasers Without Lateral Regrowth
title_short	High Efficiency, Low Power-Consumption DFB Quantum Cascade Lasers Without Lateral Regrowth
title_full	High Efficiency, Low Power-Consumption DFB Quantum Cascade Lasers Without Lateral Regrowth
title_fullStr	High Efficiency, Low Power-Consumption DFB Quantum Cascade Lasers Without Lateral Regrowth
title_full_unstemmed	High Efficiency, Low Power-Consumption DFB Quantum Cascade Lasers Without Lateral Regrowth
title_sort	high efficiency, low power-consumption dfb quantum cascade lasers without lateral regrowth
publisher	SpringerOpen
series	Nanoscale Research Letters
issn	1931-7573 1556-276X
publishDate	2017-04-01
description	Abstract Very low power-consumption distributed feedback (DFB) quantum cascade lasers (QCLs) at the wavelength around 4.9 μm were fabricated by conventional process without lateral regrowth of InP:Fe or using sidewall grating. Benefitted from the optimized materials and low waveguide loss, very low threshold current density of 0.5 kA/cm2 was obtained for a device with cavity length of 2 mm. Combined with the partial-high-reflection coating, the 1-mm-long DFB QCL achieved low power-consumption continuous wave (CW) operation up to 105 °C. The CW threshold power-consumptions were 0.72 and 0.78 W at 15 and 25 °C, respectively. The maximum CW output power was over 110 mW at 15 °C and still more than 35 mW at 105 °C. At 15 °C, wall-plug efficiency of 5.5% and slope efficiency of 1.8 W/A were deduced, which were very high for low power-consumption DFB QCLs.
topic	Quantum cascade laser Distributed feedback Low power-consumption High efficiency
url	http://link.springer.com/article/10.1186/s11671-017-2064-2
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High Efficiency, Low Power-Consumption DFB Quantum Cascade Lasers Without Lateral Regrowth

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