Collaborative research: Compact room temperature operated THz emitters with scalable architecture and low electric power consumption

合作研究：具有可扩展架构和低功耗的紧凑型室温操作太赫兹发射器

• 批准号: 1708873
• 负责人: Alexey Belyanin
• 金额: $ 15.4万
• 依托单位: Texas A&M University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-15 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1708873&HistoricalAwards=false
• 关键词: Collaborative; research; Compact; room; temperature

Abstract Title: Compact and efficient room temperature operated terahertz emitters for industrial, medical and home security applications. Nontechnical: Terahertz sensing is an enabling technology for noninvasive detection of biological and chemical hazardous agents, cancer detection, detection of mines and explosives, security screening in buildings, airports, and other public space, as well as short-range covert communications in terahertz transmission windows of the atmosphere. Currently available terahertz sources are either bulky or require cryogenic cooling leading to high costs, high complexity, and often low reliability. The proposed novel design concept aims to address most of the deficiencies of the current state-of-the-art terahertz emitter technology. The target device implementation will be similar in terms of the complexity, reliability and size to widely used standard inexpensive near infrared diode lasers. The success of the proposed effort will enable wide deployment of terahertz imaging and spectroscopic sensors for the security screening, medical diagnostics, and industrial monitoring applications. The project requires strongly correlated effort between theory and experiment including extensive modeling, optimization of the device fabrication methodologies as well as detailed characterization and field testing of the novel laser emitters. The research effort is integrated with educational and outreach plans aimed at enhancing education opportunities at the New York and Texas public universities and local communities. Technical: The main goal of the project is the development of high-power diode lasers with built-in resonant nonlinearity for efficient intra-cavity difference frequency generation in the terahertz spectral range. The gain sections based on asymmetric coupled quantum wells utilize the unique band alignment that can be realized in an antimonide material system. Laser modes generated at two closely spaced wavelengths near 2 microns will serve as an intracavity pump field for difference frequency generation. The antimonide-based diode lasers emitting in that spectral region demonstrate some of the lowest threshold current densities ever achieved for semiconductor lasers, excellent temperature stability, and watt level output power, all at room temperature. The expected electrical power input necessary for the proposed device operation with micro to milliwatt terahertz output level will be two to three orders of magnitude lower than those of existing technologies. The proposed research offers experimental and theoretical studies of the fundamental problem of resonant optical nonlinearities in antimonide-based quantum-well systems in a wide range of carrier populations from nondegenerate to highly degenerate. The future development of the proposed devices will include fabrication of widely tunable terahertz emitters as well as integration with silicon photonics. Transfer of the technology to the arsenide or silicon platform will enable epi-side down mounting of large area arrays of the terahertz emitters to scale up the output terahertz power to tens of milliwatt level and perform terahertz beam shaping.

摘要标题：紧凑高效的室温操作太赫兹发射器，适用于工业、医疗和家庭安全应用。非技术性：太赫兹传感是一种使能技术，可用于无创检测生物和化学危险物质、癌症检测、地雷和爆炸物检测、建筑物、机场和其他公共空间的安全检查，以及太赫兹传输中的短程隐蔽通信大气之窗。目前可用的太赫兹源要么体积庞大，要么需要低温冷却，导致成本高、复杂性高，而且可靠性通常较低。所提出的新颖设计概念旨在解决当前最先进的太赫兹发射器技术的大部分缺陷。目标设备实现在复杂性、可靠性和尺寸方面将与广泛使用的标准廉价近红外二极管激光器相似。该计划的成功将使太赫兹成像和光谱传感器广泛部署用于安全检查、医疗诊断和工业监控应用。该项目需要理论和实验之间密切相关的努力，包括广泛的建模、器件制造方法的优化以及新型激光发射器的详细表征和现场测试。该研究工作与旨在增加纽约和德克萨斯州公立大学和当地社区教育机会的教育和推广计划相结合。技术：该项目的主要目标是开发具有内置谐振非线性的高功率二极管激光器，以在太赫兹光谱范围内有效地产生腔内差频。基于不对称耦合量子阱的增益部分利用可在锑化物材料系统中实现的独特能带对准。在 2 微米附近的两个紧密间隔的波长处产生的激光模式将用作产生差频的腔内泵浦场。在该光谱区域发射的锑基二极管激光器表现出半导体激光器有史以来达到的最低阈值电流密度、出色的温度稳定性和瓦特级输出功率，所有这些都在室温下进行。所提议的设备在微至毫瓦太赫兹输出水平下运行所需的预期电功率输入将比现有技术低两到三个数量级。拟议的研究为基于锑化物的量子阱系统中从非简并到高度简并的各种载流子群中的谐振光学非线性的基本问题提供了实验和理论研究。所提出设备的未来发展将包括制造广泛可调的太赫兹发射器以及与硅光子学的集成。将该技术转移到砷化物或硅平台将使太赫兹发射器的大面积阵列外延面朝下安装，从而将输出太赫兹功率扩大到数十毫瓦级别并进行太赫兹光束整形。

项目成果

GaSb-based diode lasers with asymmetric coupled quantum wells

具有不对称耦合量子阱的 GaSb 基二极管激光器

• DOI: 10.1063/1.5046426
• 发表时间: 2018
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Jiang, Jiang;Shterengas, Leon;Hosoda, Takashi;Belyanin, Alexei;Kipshidze, Gela;Belenky, Gregory
• 通讯作者: Belenky, Gregory

Dual-Wavelength Y-Branch DBR Lasers With 100 mW of CW Power Near 2 μm

双波长 Y 分支 DBR 激光器，具有 100 mW 连续功率，接近 2 μm

• DOI: 10.1109/lpt.2020.3009663
• 发表时间: 2020
• 期刊: IEEE Photonics Technology Letters
• 影响因子: 2.6
• 作者: Jiang, Jiang;Shterengas, Leon;Stein, Aaron;Kipshidze, Gela;Belyanin, Alexey;Belenky, Gregory
• 通讯作者: Belenky, Gregory

Dual-wavelength operation of GaSb-based diode lasers with asymmetric coupled quantum wells

具有不对称耦合量子阱的 GaSb 基二极管激光器的双波长操作

• DOI: 10.1364/cleo_si.2019.sm3n.7
• 发表时间: 2019
• 期刊: OSA Technical Digest
• 作者: Jiang, Jiang;Shterengas, Leon;Hosoda, Takashi;Stein, Aaron;Belyanin, Alexey;Kipshidze, Gela;Belenky, Gregory
• 通讯作者: Belenky, Gregory

Passively Mode-Locked 2.7 and 3.2 μm GaSb-Based Cascade Diode Lasers

被动锁模 2.7 和 3.2 μm GaSb 级联二极管激光器

• DOI: 10.1109/jlt.2020.2971605
• 发表时间: 2020
• 期刊: Journal of Lightwave Technology
• 影响因子: 4.7
• 作者: Feng, Tao;Shterengas, Leon;Hosoda, Takashi;Kipshidze, Gela;Belyanin, Alexey;Teng, Chu C.;Westberg, Jonas;Wysocki, Gerard;Belenky, Gregory
• 通讯作者: Belenky, Gregory

Passive Mode-Locking of 3.25 μm GaSb-Based Cascade Diode Lasers

• DOI: 10.1021/acsphotonics.8b01215
• 发表时间: 2018-12-01
• 期刊: ACS PHOTONICS
• 影响因子: 7
• 作者: Feng, Tao;Shterengas, Leon;Kipshidze, Gela
• 通讯作者: Kipshidze, Gela