Zou Fen, Du Lei, Li Yong, Dong Hui
Center for Theoretical Physics & School of Physics and Optoelectronic Engineering, Hainan University, Haikou 570228, China.
Beijing Computational Science Research Center, Beijing 100193, China.
Phys Rev Lett. 2024 Apr 12;132(15):153602. doi: 10.1103/PhysRevLett.132.153602.
Frequency up-conversion, enabled by molecular optomechanical coupling, has recently emerged as a promising approach for converting infrared signals into the visible range through quantum coherent conversion of signals. However, detecting these converted signals poses a significant challenge due to their inherently weak signal intensity. In this work, we propose an amplification mechanism capable of enhancing the signal intensity by a factor of 1000 or more for the frequency up-converted infrared signal in a molecular optomechanical system. The mechanism takes advantage of the strong coupling enhancement with molecular collective mode and the Stokes sideband pump. This work demonstrates a feasible approach for up-converting infrared signals to the visible range.
由分子光机械耦合实现的频率上转换，最近已成为一种很有前景的方法，可通过信号的量子相干转换将红外信号转换到可见光范围。然而，由于这些转换信号的固有信号强度较弱，检测它们面临重大挑战。在这项工作中，我们提出了一种放大机制，能够将分子光机械系统中频率上转换红外信号的强度增强1000倍或更多。该机制利用了与分子集体模式和斯托克斯边带泵浦的强耦合增强。这项工作展示了一种将红外信号上转换到可见光范围的可行方法。
