Fast Swept-Wavelength, Low Threshold-Current, Continuous-Wave External Cavity Quantum Cascade Laser

Abstract We present a low threshold-current and fast wavelength-tuning external cavity quantum cascade laser (EC-QCL) using a scanning galvanometer in the Littman-Metcalf cavity geometry. The EC-QCL could repeatedly swept at 100 Hz over its full tuning range of about 290 nm (2105 cm−1 to 2240 cm−1),...

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Main Authors:	Xuefeng Jia, Lijun Wang, Zhiwei Jia, Ning Zhuo, Jinchuan Zhang, Shenqiang Zhai, Junqi Liu, Shuman Liu, Fengqi Liu, Zhanguo Wang
Format:	Article
Language:	English
Published:	SpringerOpen 2018-10-01
Series:	Nanoscale Research Letters
Subjects:	Quantum cascade laser External cavity Fast swept-wavelength
Online Access:	http://link.springer.com/article/10.1186/s11671-018-2765-1

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record_format	Article
spelling	doaj-e62ce0238ce24074af36704dce0897742020-11-24T21:44:15ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2018-10-011311510.1186/s11671-018-2765-1Fast Swept-Wavelength, Low Threshold-Current, Continuous-Wave External Cavity Quantum Cascade LaserXuefeng Jia0Lijun Wang1Zhiwei Jia2Ning Zhuo3Jinchuan Zhang4Shenqiang Zhai5Junqi Liu6Shuman Liu7Fengqi Liu8Zhanguo Wang9Key Laboratory of Semiconductor Materials Science & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of SciencesKey Laboratory of Semiconductor Materials Science & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of SciencesKey Laboratory of Semiconductor Materials Science & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of SciencesKey Laboratory of Semiconductor Materials Science & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of SciencesKey Laboratory of Semiconductor Materials Science & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of SciencesKey Laboratory of Semiconductor Materials Science & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of SciencesKey Laboratory of Semiconductor Materials Science & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of SciencesKey Laboratory of Semiconductor Materials Science & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of SciencesKey Laboratory of Semiconductor Materials Science & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of SciencesKey Laboratory of Semiconductor Materials Science & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of SciencesAbstract We present a low threshold-current and fast wavelength-tuning external cavity quantum cascade laser (EC-QCL) using a scanning galvanometer in the Littman-Metcalf cavity geometry. The EC-QCL could repeatedly swept at 100 Hz over its full tuning range of about 290 nm (2105 cm−1 to 2240 cm−1), providing a scan rate of 59.3 μm s−1. The continuous-wave (CW) threshold current of the EC-QCL was as low as 250 mA and the maximum output power was 20.8 mW at 400 mA for a 3-mm-long QCL gain chip. With a sawtooth wave modulation, a scan resolution of < 0.2 cm−1 can be achieved within the tuning range. The low power-consumption and fast swept-wavelength EC-QCL will be beneficial to many applications.http://link.springer.com/article/10.1186/s11671-018-2765-1Quantum cascade laserExternal cavityFast swept-wavelength
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Xuefeng Jia Lijun Wang Zhiwei Jia Ning Zhuo Jinchuan Zhang Shenqiang Zhai Junqi Liu Shuman Liu Fengqi Liu Zhanguo Wang
spellingShingle	Xuefeng Jia Lijun Wang Zhiwei Jia Ning Zhuo Jinchuan Zhang Shenqiang Zhai Junqi Liu Shuman Liu Fengqi Liu Zhanguo Wang Fast Swept-Wavelength, Low Threshold-Current, Continuous-Wave External Cavity Quantum Cascade Laser Nanoscale Research Letters Quantum cascade laser External cavity Fast swept-wavelength
author_facet	Xuefeng Jia Lijun Wang Zhiwei Jia Ning Zhuo Jinchuan Zhang Shenqiang Zhai Junqi Liu Shuman Liu Fengqi Liu Zhanguo Wang
author_sort	Xuefeng Jia
title	Fast Swept-Wavelength, Low Threshold-Current, Continuous-Wave External Cavity Quantum Cascade Laser
title_short	Fast Swept-Wavelength, Low Threshold-Current, Continuous-Wave External Cavity Quantum Cascade Laser
title_full	Fast Swept-Wavelength, Low Threshold-Current, Continuous-Wave External Cavity Quantum Cascade Laser
title_fullStr	Fast Swept-Wavelength, Low Threshold-Current, Continuous-Wave External Cavity Quantum Cascade Laser
title_full_unstemmed	Fast Swept-Wavelength, Low Threshold-Current, Continuous-Wave External Cavity Quantum Cascade Laser
title_sort	fast swept-wavelength, low threshold-current, continuous-wave external cavity quantum cascade laser
publisher	SpringerOpen
series	Nanoscale Research Letters
issn	1931-7573 1556-276X
publishDate	2018-10-01
description	Abstract We present a low threshold-current and fast wavelength-tuning external cavity quantum cascade laser (EC-QCL) using a scanning galvanometer in the Littman-Metcalf cavity geometry. The EC-QCL could repeatedly swept at 100 Hz over its full tuning range of about 290 nm (2105 cm−1 to 2240 cm−1), providing a scan rate of 59.3 μm s−1. The continuous-wave (CW) threshold current of the EC-QCL was as low as 250 mA and the maximum output power was 20.8 mW at 400 mA for a 3-mm-long QCL gain chip. With a sawtooth wave modulation, a scan resolution of < 0.2 cm−1 can be achieved within the tuning range. The low power-consumption and fast swept-wavelength EC-QCL will be beneficial to many applications.
topic	Quantum cascade laser External cavity Fast swept-wavelength
url	http://link.springer.com/article/10.1186/s11671-018-2765-1
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Fast Swept-Wavelength, Low Threshold-Current, Continuous-Wave External Cavity Quantum Cascade Laser

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