Transforming conventional PPLN-based frequency converters to cover 13-30 microns: bridging gap between mid-infrared and THz regions

将传统的基于 PPLN 的变频器改造为覆盖 13-30 微米：弥合中红外和太赫兹区域之间的差距

• 批准号: 1027360
• 负责人: Yujie Ding
• 金额: $ 29万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1027360&HistoricalAwards=false
• 关键词: Transforming; conventional; PPLN; based; frequency

ObjectivePI plans to investigate efficient generation of far-infrared radiation in 13-30 µm based on difference-frequency generation in MgO-doped periodically-poled LiNbO3 (PPLN) at room temperature. The efficient conversion is made possible by utilizing a completely novel configuration under which the two incoming optical waves propagate inside a proton-exchanged waveguide, whereas the far-infrared radiation is emitted from the waveguide surface. PI?s goal is to achieve four emission wavelengths, with the peak and average powers reaching 2 W and 200 µW, respectively.Intellectual MeritSuch a novel approach is based on a potentially transformative concept, i.e. by taking advantage of the surface-emitting geometry PI will be able to dramatically expand the wavelengths generated from a MgO-doped PPLN waveguide to an extremely wide range in the far-infrared region. Such an expansion will enable researchers from different disciplines to achieve transformative applications in chemical sensing, biological and bio-medical diagnostics and therapy, and explosive and chemical-agent detections. Presently, no emitter is capable of covering 13-30 µm under the room-temperature operation.Broader ImpactIf this proposal is funded, PI will actively recruit a minority or female student to conduct the proposed research. The graduate student supported by this grant will work with PI to integrate the research results obtained during the funding period into three demos for classroom teaching, labs for undergraduate and graduate students, high-school student summer camps, and annual campus recruitment events. The compact and portable far-infrared emitters to be implemented through the proposed research will ultimately make huge impacts on society based on several important applications outlined above.

CIMPI计划研究在室温下基于MgO掺杂的极化LiNbO 3（PPLN）的差频产生的13-30 µm远红外辐射的有效产生。有效的转换是可能的，通过利用一个全新的配置下，两个入射光波内的质子交换波导传播，而远红外辐射从波导表面发射。派？的目标是实现四个发射波长，峰值和平均功率分别达到2 W和200 µW。智力优点这种新颖的方法是基于一个潜在的变革性的概念，即通过利用表面发射几何PI将能够显着扩展从MgO掺杂的PPLN波导产生的波长到远红外区域的极宽范围。这种扩展将使不同学科的研究人员能够在化学传感、生物和生物医学诊断和治疗以及爆炸物和化学制剂检测方面实现变革性应用。更广泛的影响如果这项建议获得资助，PI将积极招募一名少数民族或女性学生进行拟议的研究。该资助支持的研究生将与PI合作，将资助期间获得的研究成果整合到课堂教学，本科生和研究生实验室，高中生夏令营和年度校园招聘活动的三个演示中。通过拟议的研究实施的紧凑型和便携式远红外发射器将最终对社会产生巨大的影响，基于上述几个重要的应用。