Highly Efficient Laser Cryo-coolers Based on Adiabatic Bandgap Shift in Type-II Heterojunctions

基于 II 型异质结绝热带隙位移的高效激光低温冷却器

• 批准号: 0901855
• 负责人: Hooman Mohseni
• 金额: $ 31.92万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0901855&HistoricalAwards=false
• 关键词: Highly; Efficient; Laser; Cryo; coolers

Objective: the objective of this effort is to study and demonstrate adiabatic bandgap shift in type-II quantum wells, and use this process to cool a heat load to below 10 degrees Kelvin.Intellectual Merit: The proposed research provides an excellent testbed to study many important adiabatic and diabatic quantum processes such as Quantum Refrigeration, Quantum Heat Pumps, and Quantum Amplifiers. It also helps advancing research inmany related devices, such as quantum sensors and computers. Using type-II quantum wells, this research advances the deep physics involved in Type-II heterojunctions, including their non-linear electrooptic effects, carrier lifetime, and built-in electric field.Broader Impact: Small, non-mechanical cryogenic coolers resulted from this program can revolutionize the way we live, since they lead to practical access to our most sensitive optical sensor (superconductor single photon detector), magnetic sensors (SQUID), the most accurate voltage standard (Josephson Junction) and time standards (Superconductor Oscillators) to name a few. Simulation tools that will be developed in this research effort will become publicly available and shared with the scientific community through World Wide Web. Also, some of the results of this research will be incorporated in a solid-state course and an advanced course on modulators. Undergraduate and graduate students from under-represented and minority groups will be encouraged to take part in this research through Alliances for Graduate Education and the Professorate program at Northwestern University. We will also collaborate with a major company to validate the results, solicit feedback, and produce a commercialization path.

目的：这项工作的目的是研究和证明 II 型量子阱中的绝热带隙位移，并利用该过程将热负载冷却至开尔文 10 度以下。 智力优点：所提出的研究为研究许多重要的绝热和非绝热量子过程，例如量子制冷、量子热泵和量子放大器。它还有助于推进许多相关设备的研究，例如量子传感器和计算机。这项研究利用 II 型量子阱，推进了 II 型异质结涉及的深层物理学，包括非线性电光效应、载流子寿命和内置电场。 更广泛的影响：小型非机械低温冷却器该计划可以彻底改变我们的生活方式，因为它们可以实际使用我们最灵敏的光学传感器（超导单光子探测器）、磁传感器（SQUID）、最准确的电压标准（约瑟夫森结）和时间标准（超导振荡器）仅举几例。这项研究工作中开发的模拟工具将通过万维网公开并与科学界共享。此外，这项研究的一些结果将被纳入固态课程和调制器高级课程中。通过研究生教育联盟和西北大学的教授计划，将鼓励来自代表性不足和少数群体的本科生和研究生参与这项研究。我们还将与一家大公司合作来验证结果、征求反馈并制定商业化路径。