{"title":"888 nm laser diode end-pumped continuous wave and passively Q-switched Ho:YAG laser","authors":"Xiaofan Jing, Xinlu Zhang, Panqiang Kang, Changchang Shen, Jinjer Huang","doi":"10.1016/j.optlastec.2024.111893","DOIUrl":null,"url":null,"abstract":"<div><div>A 2.1 μm Ho:YAG laser directly pumped by an 888 nm laser diode was demonstrated for the first time, to the best of our knowledge. The output performances of continuous wave and passively Q-switched Ho:YAG laser were investigated at the different output coupler transmittances. For the continuous wave operation, the maximum output power of 396 mW was obtained at the absorbed pump power of 3.7 W, corresponding to the slope efficiency of 22.6 %. For the passively Q-switching operation, the maximum average output power was 103.2 mW at the absorbed pump power of 3.7 W, with a pulse width of 62.9 ns and a repetition frequency of 1.105 kHz. The experiment results show that the 888 nm laser diode is a promising pump source to achieve 2.1 μm laser output in Ho:YAG crystal.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"181 ","pages":"Article 111893"},"PeriodicalIF":4.6000,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Laser Technology","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030399224013513","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
A 2.1 μm Ho:YAG laser directly pumped by an 888 nm laser diode was demonstrated for the first time, to the best of our knowledge. The output performances of continuous wave and passively Q-switched Ho:YAG laser were investigated at the different output coupler transmittances. For the continuous wave operation, the maximum output power of 396 mW was obtained at the absorbed pump power of 3.7 W, corresponding to the slope efficiency of 22.6 %. For the passively Q-switching operation, the maximum average output power was 103.2 mW at the absorbed pump power of 3.7 W, with a pulse width of 62.9 ns and a repetition frequency of 1.105 kHz. The experiment results show that the 888 nm laser diode is a promising pump source to achieve 2.1 μm laser output in Ho:YAG crystal.
期刊介绍：
Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication.
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