{"title":"Femtosecond laser inscription of Bragg gratings in Tm<sup>3+</sup>-doped fluorotellurite glass fibers for lasing at 2.3 µm.","authors":"Shanren Liu, Qian Zhang, Bo Wang, Junjie Wang, Qi Guo, Zhixu Jia, Guanshi Qin, Peiqing Zhang, Shixun Dai, Qidai Chen, Hongbo Sun, Yongsen Yu","doi":"10.1364/OL.544758","DOIUrl":null,"url":null,"abstract":"<p><p>In this paper, fiber Bragg gratings (FBGs) are inscribed in Tm<sup>3+</sup>-doped fluorotellurite glass fiber (TDFTF) and applied to construction of a 2.3-µm all-fiber laser. The FBGs with a center wavelength of 2.3 µm are fabricated by using the femtosecond laser point-by-point method combined with the slit beam shaping technique. Both the reflectivity and insertion loss of FBGs are investigated for different pulse energies, grating orders, and grating lengths. The FBG with a reflectivity of 90.4% is inscribed at one end of a 1.5-m-long TDFTF. Employing a 1410-nm/1570-nm dual-wavelength upconversion pumping technique, lasing at 2.3 µm is achieved. The maximum unsaturated output power is 1.88 W, and the slope efficiency is 37%. High stability has been demonstrated for both the wavelength and output power of the laser over an hour. This research is crucial for advancing the development of high-power fiber lasers operating at 2.3 µm.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"49 23","pages":"6805-6808"},"PeriodicalIF":3.1000,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.544758","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, fiber Bragg gratings (FBGs) are inscribed in Tm3+-doped fluorotellurite glass fiber (TDFTF) and applied to construction of a 2.3-µm all-fiber laser. The FBGs with a center wavelength of 2.3 µm are fabricated by using the femtosecond laser point-by-point method combined with the slit beam shaping technique. Both the reflectivity and insertion loss of FBGs are investigated for different pulse energies, grating orders, and grating lengths. The FBG with a reflectivity of 90.4% is inscribed at one end of a 1.5-m-long TDFTF. Employing a 1410-nm/1570-nm dual-wavelength upconversion pumping technique, lasing at 2.3 µm is achieved. The maximum unsaturated output power is 1.88 W, and the slope efficiency is 37%. High stability has been demonstrated for both the wavelength and output power of the laser over an hour. This research is crucial for advancing the development of high-power fiber lasers operating at 2.3 µm.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
