Pokryszka Piotr, Xu Yingchu, Chang Wonkeun, Krzempek Karol
Laser Spectroscopy Group, Faculty of Electronics, Photonics and Microsystems, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, Wroclaw, 50-370, Poland.
School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore.
Sci Rep. 2024 Nov 16;14(1):28251. doi: 10.1038/s41598-024-76704-3.
We demonstrate the first successful stabilization of a dissipative soliton resonance (DSR) mode-locked (ML) laser source using straightforward techniques. Our setup employed a figure-8 (F8) resonator configuration and a nonlinear optical loop mirror (NOLM) to achieve stable mode-locking, generating 1064 nm rectangular pulses with a 3 ns duration at a repetition frequency of ~ 1 MHz. The pulses were boosted in an all-fiber amplifier chain and reached 30 µJ and 10 kW peak power per pulse at 30 W average output power. We addressed a critical gap in the literature by actively stabilizing key DSR pulse parameters: average output power (improved by a factor of 51), pulse repetition frequency (improved by 7583 using cross-phase modulation for synchronization), and pulse duration (improved by a factor of ~ 4). Additionally, we included a numerical analysis to explore the pulse formation mechanisms in DSR ML lasers working in a F8 configuration. Our findings show that non-complex all-in-fiber DSR ML lasers can reliably produce high-energy pulses with stable, repeatable parameters, making them suitable for future applications e.g. in nonlinear frequency conversion, laser micromachining, or LIDAR.
我们首次展示了使用简单技术成功稳定耗散孤子共振(DSR)锁模(ML)激光源。我们的装置采用了8字形(F8)谐振器配置和非线性光学环镜(NOLM)来实现稳定锁模,在约1MHz的重复频率下产生持续时间为3ns的1064nm矩形脉冲。这些脉冲在全光纤放大器链中得到增强,在30W平均输出功率下,每个脉冲达到30µJ和10kW的峰值功率。我们通过主动稳定关键的DSR脉冲参数填补了文献中的一个关键空白:平均输出功率(提高了51倍)、脉冲重复频率(使用交叉相位调制进行同步提高了7583)和脉冲持续时间(提高了约4倍)。此外,我们进行了数值分析,以探索在F8配置下工作的DSR ML激光器中的脉冲形成机制。我们的研究结果表明,非复杂的全光纤DSR ML激光器能够可靠地产生具有稳定、可重复参数的高能量脉冲,使其适用于未来的应用,例如非线性频率转换、激光微加工或激光雷达。