Development of Low-Cost and Portable Semiconductor Laser Based Evanescent-Wave THz Sensors
低成本便携式半导体激光器倏逝波太赫兹传感器的开发
基本信息
- 批准号:1437168
- 负责人:
- 金额:$ 31.5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2014
- 资助国家:美国
- 起止时间:2014-09-01 至 2017-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Many molecules have characteristic spectral fingerprints at terahertz frequencies, which makes this frequency range unique for applications in spectroscopic sensing of chemical and biological species. However, progress in development of terahertz sensors is lacking due to the challenges associated with generation and detection of terahertz waves. Quantum-cascade lasers are the most powerful solid-state sources of terahertz radiation that have been developed in the past decade. However, they are required to be cooled much below room-temperature for operation, which makes it challenging to implement conventional optical sensing techniques with such lasers. This award will support development of a low-cost and compact terahertz sensor instrument based on arrays of chip-scale terahertz lasers for broadband spectroscopic sensing of solid or liquids. A unique "evanescent-wave" sensing scheme will allow measurement of terahertz properties of the analyte placed in ambient conditions while the laser chip is cooled inside a portable cryocooler for operation. A successful demonstration has the potential to spawn development of affordable commercial sensors at terahertz frequencies that would find applications in cell biology, process engineering, crystal engineering, pharmaceutical quality control, identification of counterfeit drugs, identification of explosives, and even drug discovery. Educational opportunities in the area of photonics and quantum-mechanics will be facilitated at various levels including that for elementary and middle-school students and engineering undergraduates. The project will also enable opportunities for interdisciplinary research across different academic departments of the university.This project will develop an intracavity evanescent-wave terahertz spectroscopic sensor with integrated arrays of terahertz quantum-cascade lasers on a semiconductor chip that would interact with an analyte in either liquid or solid-phase. A key characteristic of such lasers is that the evanescent-mode of the laser cavity can extend few millimeters above the appropriately designed cavities, which could therefore interact with analyte placed in ambient conditions while it is not in contact with the cooled laser chip. The resonant frequency of the laser interrogates the complex permittivity of the analyte. The fact that electronic non-linear mixing still works at terahertz frequencies, on-chip mixing will be utilized to efficiently down-convert the sensed terahertz signal to microwave frequency region. Hence, all that is needed to record the sensed data is a hand-held microwave spectrum analyzer. The need for expensive terahertz detectors as well as a terahertz spectrometer is completely eliminated, whereas the functionality attained can be similar to or better than that from many advanced spectroscopy techniques.
许多分子在太赫兹频率下具有特征光谱指纹,这使得该频率范围对于化学和生物物种的光谱传感应用是独特的。然而,由于太赫兹波的产生和检测相关的挑战,太赫兹传感器的开发缺乏进展。量子级联激光器是过去十年中开发的最强大的太赫兹辐射固态源。然而,它们需要被冷却到远低于室温的温度才能工作,这使得用这种激光器实现传统的光学传感技术具有挑战性。该奖项将支持基于芯片级太赫兹激光器阵列的低成本和紧凑型太赫兹传感器仪器的开发,用于固体或液体的宽带光谱传感。一个独特的“渐逝波”传感方案将允许测量放置在环境条件下的分析物的太赫兹特性,而激光芯片在便携式制冷机内冷却以进行操作。一个成功的演示有可能催生出价格合理的太赫兹频率商业传感器的开发,这些传感器将在细胞生物学、工艺工程、晶体工程、药品质量控制、假药识别、爆炸物识别甚至药物发现中找到应用。将在各个层次上促进光子学和量子力学领域的教育机会,包括为小学和中学学生以及工程本科生提供教育机会。该项目还将为该大学不同学术部门的跨学科研究提供机会。该项目将开发一种腔内倏逝波太赫兹光谱传感器,该传感器在半导体芯片上集成了太赫兹量子级联激光器阵列,可与液相或固相分析物相互作用。这种激光器的一个关键特性是,激光腔的消逝模式可以在适当设计的腔上方延伸几毫米,因此可以与放置在环境条件下的分析物相互作用,而不与冷却的激光芯片接触。激光器的谐振频率询问分析物的复介电常数。电子非线性混频仍然在太赫兹频率下工作的事实,将利用片上混频来有效地将感测到的太赫兹信号下变频到微波频率区域。因此,记录感测数据所需的全部是手持式微波频谱分析仪。完全消除了对昂贵的太赫兹探测器和太赫兹光谱仪的需求,而获得的功能可以类似于或优于许多先进的光谱技术。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Sushil Kumar其他文献
CdS sintered films: growth and characteristics
CdS 烧结薄膜:生长和特性
- DOI:
10.1016/j.physb.2003.08.129 - 发表时间:
2004 - 期刊:
- 影响因子:2.8
- 作者:
M. Sharma;Sushil Kumar;L. Sharma;T. Sharma;M. Husain - 通讯作者:
M. Husain
Reliable geographic routing protocol for vehicular ad-hoc networks under shadowing and multipath environments
适用于阴影和多路径环境下车载自组织网络的可靠地理路由协议
- DOI:
10.1109/icoiact.2018.8350734 - 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
Reena Kasana;Sushil Kumar - 通讯作者:
Sushil Kumar
Lychee-Associated Hypoglycaemic Encephalopathy: A New Disease of Children Described in India
荔枝相关低血糖脑病:印度描述的一种新的儿童疾病
- DOI:
- 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
Sushil Kumar;R. Kumari;R. Pandey - 通讯作者:
R. Pandey
Synthesis and Preliminary Pharmacological Evaluation of 2-(4-(Aryl substituted) piperazin-1-yl)-N- phenylacetamides: Potential Antipsychotics
2-(4-(芳基取代)哌嗪-1-基)-N-苯乙酰胺的合成和初步药理学评价:潜在的抗精神病药
- DOI:
- 发表时间:
2011 - 期刊:
- 影响因子:0
- 作者:
Sushil Kumar;A. Wahi;Ranjit Singh - 通讯作者:
Ranjit Singh
ccidental ingestion of mosquito repellent liquid
意外摄入驱蚊液
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:0
- 作者:
Bhavana Tiwari;Sushil Kumar;Ambedkar Nagar - 通讯作者:
Ambedkar Nagar
Sushil Kumar的其他文献
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{{ truncateString('Sushil Kumar', 18)}}的其他基金
Phase-locked arrays of high-power terahertz lasers with ultra-narrow beams
超窄光束高功率太赫兹激光器锁相阵列
- 批准号:
1609168 - 财政年份:2016
- 资助金额:
$ 31.5万 - 项目类别:
Standard Grant
UNS : Nanoplasmonic interferometric sensor array for dynamic multiplexed functional assay of white blood cells
UNS:用于白细胞动态多重功能测定的纳米等离子体干涉传感器阵列
- 批准号:
1512417 - 财政年份:2015
- 资助金额:
$ 31.5万 - 项目类别:
Standard Grant
CAREER: Development of high-performance terahertz intersubband lasers
职业:高性能太赫兹子带间激光器的开发
- 批准号:
1351142 - 财政年份:2014
- 资助金额:
$ 31.5万 - 项目类别:
Standard Grant
High power quantum cascade lasers for terahertz applications
用于太赫兹应用的高功率量子级联激光器
- 批准号:
1128562 - 财政年份:2011
- 资助金额:
$ 31.5万 - 项目类别:
Standard Grant
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