Post-Process Frequency Tuning of Single-Mode Quantum Cascade Laser at 4.7 THz

IF 2.2 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Journal of Quantum Electronics Pub Date : 2023-07-27 DOI:10.1109/JQE.2023.3295402

Tudor Olariu;Mattias Beck;Jérôme Faist

{"title":"Post-Process Frequency Tuning of Single-Mode Quantum Cascade Laser at 4.7 THz","authors":"Tudor Olariu;Mattias Beck;Jérôme Faist","doi":"10.1109/JQE.2023.3295402","DOIUrl":null,"url":null,"abstract":"We present a systematic study of the optical design, fabrication, and characterization of quantum cascade laser devices with a frequency around 4.7 THz, intended for use as local oscillators in the GREAT heterodyne receiver aboard SOFIA (Heyminck, et al., 2012), (Risacher et al., 2018). The measured devices exhibit consistent spectral performance, with approximately 75% of them having their emission frequency within a 6 GHz band relative to their nominal value. We present surface-emitting lasers capable of covering the required 4743–4748 GHz frequency interval, with powers up to 2.2mW at 40K in continuous wave. Their emission frequency can be tuned up to +2 GHz with current over 80mA and −5 GHz over the 20-60K range with temperature. Additionally, we explain how processing variability is exploited to shift the emission frequency post-process and post-measurement: occurring during an etching step, the undesired height difference between different sample areas can be minimized using custom thicknesses for depositing various materials. This alters the effective refractive index of the optical mode, thus changing the laser’s emission frequency.","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/3/10189366/10196420.pdf","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Journal of Quantum Electronics","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10196420/","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 1

Abstract

We present a systematic study of the optical design, fabrication, and characterization of quantum cascade laser devices with a frequency around 4.7 THz, intended for use as local oscillators in the GREAT heterodyne receiver aboard SOFIA (Heyminck, et al., 2012), (Risacher et al., 2018). The measured devices exhibit consistent spectral performance, with approximately 75% of them having their emission frequency within a 6 GHz band relative to their nominal value. We present surface-emitting lasers capable of covering the required 4743–4748 GHz frequency interval, with powers up to 2.2mW at 40K in continuous wave. Their emission frequency can be tuned up to +2 GHz with current over 80mA and −5 GHz over the 20-60K range with temperature. Additionally, we explain how processing variability is exploited to shift the emission frequency post-process and post-measurement: occurring during an etching step, the undesired height difference between different sample areas can be minimized using custom thicknesses for depositing various materials. This alters the effective refractive index of the optical mode, thus changing the laser’s emission frequency.

查看原文本刊更多论文

4.7太赫兹单模量子级联激光器的后处理频率调谐

我们对频率约为4.7THz的量子级联激光器件的光学设计、制造和表征进行了系统研究，该器件旨在用作SOFIA上的GREAT外差接收器中的本地振荡器（Heymick等人，2012），（Risacher等人，2018）。被测器件表现出一致的光谱性能，其中大约75%的器件的发射频率相对于其标称值在6GHz频带内。我们提出的表面发射激光器能够覆盖所需的4743–4748 GHz频率间隔，在40K的连续波中功率高达2.2mW。它们的发射频率可以在电流超过80mA的情况下调谐到+2 GHz，在温度超过20-60K的情况下可以调谐到-5 GHz。此外，我们解释了如何利用工艺可变性来改变工艺后和测量后的发射频率：发生在蚀刻步骤期间，可以使用定制厚度来沉积各种材料，最大限度地减少不同样品区域之间不希望的高度差。这改变了光学模式的有效折射率，从而改变了激光器的发射频率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

IEEE Journal of Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.70

自引率

4.00%

发文量

审稿时长

3.0 months

期刊介绍： The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics. The Journal comprises original contributions, both regular papers and letters, describing significant advances in the understanding of quantum electronics phenomena or the demonstration of new devices, systems, or applications. Manuscripts reporting new developments in systems and applications must emphasize quantum electronics principles or devices. The scope of JQE encompasses the generation, propagation, detection, and application of coherent electromagnetic radiation having wavelengths below one millimeter (i.e., in the submillimeter, infrared, visible, ultraviolet, etc., regions). Whether the focus of a manuscript is a quantum-electronic device or phenomenon, the critical factor in the editorial review of a manuscript is the potential impact of the results presented on continuing research in the field or on advancing the technological base of quantum electronics.

文献相关原料

公司名称	产品信息	采购帮参考价格