Li Hongqing, Tang Wenjing, Shan Yingshuang, Wang Jing, Jiang Kai, Fan Mingqi, Chen Tao, Zhou Cheng, Xia Wei
School of Physics and Technology, University of Jinan, Jinan, 250022, China.
School of Information Science and Engineering, Shandong University, Jinan, 250100, China.
Front Optoelectron. 2025 Jun 11;18(1):14. doi: 10.1007/s12200-025-00157-3.
For 2 μm all-solid-state lasers, pulse modulation methods based on low-dimensional nanomaterial saturable absorbers (SAs) offer advantages such as compact structure, low cost, and ease of implementation. The construction of stable, highly nonlinear low-dimensional nanomaterial SAs is an urgent issue to be addressed. In this paper, two types of black phosphorus/rhenium disulfide (BP/ReS) heterojunction with high stability were prepared separately by liquid phase exfoliation (LPE) and mechanical exfoliation (ME) methods, the nonlinear saturable absorption characteristics of the two types of heterojunctions have been characterized in detail. Then, the pulse modulation applications of these two materials have been studied in a 2 μm all-solid-state thulium-doped yttrium aluminum perovskite (Tm:YAP) passively Q-switched pulsed laser. The BP/ReS heterojunction SA prepared by the LPE method demonstrates a thinner thickness and lower non-saturation optical loss, which achieved the maximum average output power 528 mW at a pump power of 6.37 W, with a narrowest pulse width of 366 ns, and a maximum peak power of 28.85 W. These results indicate that the BP/ReS heterojunction SA has great potential for optical modulation device applications.
对于2μm全固态激光器，基于低维纳米材料可饱和吸收体（SAs）的脉冲调制方法具有结构紧凑、成本低和易于实现等优点。构建稳定、高非线性的低维纳米材料可饱和吸收体是一个亟待解决的问题。本文分别采用液相剥离（LPE）法和机械剥离（ME）法制备了两种具有高稳定性的黑磷/二硫化铼（BP/ReS）异质结，详细表征了这两种异质结的非线性饱和吸收特性。然后，在2μm全固态掺铥钇铝钙钛矿（Tm:YAP）被动调Q脉冲激光器中研究了这两种材料的脉冲调制应用。通过LPE法制备的BP/ReS异质结可饱和吸收体具有更薄的厚度和更低的非饱和光损耗，在泵浦功率为6.37W时实现了最大平均输出功率528mW，最窄脉冲宽度为366ns，最大峰值功率为28.85W。这些结果表明，BP/ReS异质结可饱和吸收体在光调制器件应用方面具有巨大潜力。
