Khalid Mamoona, Usman Muhammad, Arshad Irfan
Photonics and Communications Lab, Electrical Engineering Department, University of Engineering and Technology, Taxila, Pakistan.
Heliyon. 2023 Jan 18;9(1):e13031. doi: 10.1016/j.heliyon.2023.e13031. eCollection 2023 Jan.
The growing landscape of laser applications in ∼ 2 μm spectral region leads to the development of novel transparent media that provide low attenuation solutions for high power laser applications. This includes investigating glassy media such as heavy metal oxides (e.g. tellurite and germanate), fluoride and chalcogenides as an alternative to the most efficient and widely utilized silica glass. This review article discusses the potential of a heavy metal oxide lead-germanate glass (GeO-PbO-GaO-NaO) for ∼ 2.1 μm laser applications, with a focus on our contribution to the field. Firstly, a comparative study of commercially available silicates and fluorides with germanate glass is presented to reveal germanate to be a favorable material for 2.1 μm laser applications. Secondly, as our contribution to the field, we present the development of the first ∼ 2.1 μm small cavity single frequency laser action in a Ho doped GPGN glass that verifies its capability for ∼ 2 μm laser applications and beyond.
在约2微米光谱区域中，激光应用领域不断拓展，促使新型透明介质得以开发，为高功率激光应用提供低衰减解决方案。这包括研究诸如重金属氧化物（如碲酸盐和锗酸盐）、氟化物和硫系化合物等玻璃介质，以替代效率最高且应用最广泛的石英玻璃。本文综述了重金属氧化物锗酸铅玻璃（GeO-PbO-GaO-NaO）在约2.1微米激光应用方面的潜力，重点介绍了我们在该领域所做的贡献。首先，对市售硅酸盐、氟化物与锗酸盐玻璃进行了对比研究，结果表明锗酸盐是适用于2.1微米激光应用的理想材料。其次，作为我们在该领域的贡献，我们展示了首次在掺钬GPGN玻璃中实现约2.1微米小腔单频激光运转，这证实了其在约2微米及以上激光应用方面的能力。
