Jeong Hansol, Kim Deok Woo, Kim Hyunhak, Cha Myoungsik, Moon Han Seb
Department of Physics, Pusan National University, Geumjeong-gu, Busan, 46241, South Korea.
Quantum Sensors Research Center, Pusan National University, Geumjeong-gu, Busan, 46241, South Korea.
Sci Rep. 2024 Jun 12;14(1):13485. doi: 10.1038/s41598-024-63627-2.
We propose a method for actively controlling the frequency of an optical frequency comb (OFC) using sum-frequency generation (SFG) with a nonlinear crystal. For the first time, OFC generation was experimentally demonstrated via sum-frequency mixing of a narrowband continuous wave (CW) laser and a passively mode-locked fiber laser. By adjusting the optical frequency of the CW laser, we successfully controlled the offset-frequency of the SFG-OFC, which was mapped from the OFC of the pulse pump laser. Furthermore, by comparing the spectral widths of the SFG-OFC modes generated from two CW lasers with different spectral widths, we confirmed that the spectral characteristics of the SFG-OFC modes depended on the spectral features of the CW laser.
我们提出了一种利用非线性晶体通过和频产生（SFG）来主动控制光学频率梳（OFC）频率的方法。首次通过窄带连续波（CW）激光器与被动锁模光纤激光器的和频混频实验证明了OFC的产生。通过调整CW激光器的光频率，我们成功地控制了SFG - OFC的偏移频率，该偏移频率是从脉冲泵浦激光器的OFC映射而来的。此外，通过比较由具有不同光谱宽度的两个CW激光器产生的SFG - OFC模式的光谱宽度，我们证实了SFG - OFC模式的光谱特性取决于CW激光器的光谱特征。
