Lander Gower Nathalie, Levy Shiran, Piperno Silvia, Addamane Sadhvikas J, Reno John L, Albo Asaf
Faculty of Engineering, Bar-Ilan University, Ramat Gan 5290002, Israel.
The Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel.
Nanophotonics. 2024 Jan 10;13(10):1725-1733. doi: 10.1515/nanoph-2023-0617. eCollection 2024 Apr.
We propose a method to extract the upper laser level's (ULL's) excess electronic temperature from the analysis of the maximum light output power ( ) and current dynamic range Δ = ( - ) of terahertz quantum cascade lasers (THz QCLs). We validated this method, both through simulation and experiment, by applying it on THz QCLs supporting a clean three-level system. Detailed knowledge of electronic excess temperatures is of utmost importance in order to achieve high temperature performance of THz QCLs. Our method is simple and can be easily implemented, meaning an extraction of the excess electron temperature can be achieved without intensive experimental effort. This knowledge should pave the way toward improvement of the temperature performance of THz QCLs beyond the state-of-the-art.
我们提出了一种方法，通过分析太赫兹量子级联激光器（THz QCLs）的最大光输出功率（ ）和电流动态范围Δ = ( - )，来提取上激光能级（ULL）的过剩电子温度。我们通过模拟和实验，将该方法应用于支持纯净三能级系统的太赫兹量子级联激光器，从而验证了此方法。为了实现太赫兹量子级联激光器的高温性能，详细了解过剩电子温度至关重要。我们的方法简单且易于实施，这意味着无需大量实验工作就能实现过剩电子温度的提取。这一知识应为超越当前技术水平改善太赫兹量子级联激光器的温度性能铺平道路。
