{"title":"基于像差补偿端泵浦Nd:YAG棒放大器的近衍射限制皮秒激光器，峰值功率超过100 MW，平均功率超过300 W。","authors":"Chuanguo Xie, Yifu Zhou, Xiaoyan Qiu, Xiaofeng He, Ziyue Chen, Jinbo Wu, Junyang Dong, Liying Chen, Bin Liu, Jian Chen, Bingfeng Ju, Chong Liu","doi":"10.1364/OL.565263","DOIUrl":null,"url":null,"abstract":"<p><p>A high-energy picosecond laser based on high-power diodes end-pumped Nd:YAG rod amplifiers with efficient birefringence compensation was demonstrated. The maximum linearly polarized output power from the amplifiers was up to 302 W at 250 kHz with a pulse energy of 1.2 mJ, achieving a peak power of more than 100 MW. It was found that once the issue of thermally induced birefringence in end-pumped Nd:YAG rod amplifiers is addressed, spherical aberration emerges as the primary factor responsible for beam degradation. The wavefront distortion of the amplified beam was measured, and a spherical aberration compensation plate was applied. The beam quality M<sup>2</sup> factor was improved from 1.9 to 1.2. An average power of 183 W green light was achieved through second harmonic generation with a conversion efficiency of 65%. This represents the highest, to the best of our knowledge, output with high beam quality for a picosecond Nd:YAG MOPA laser.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 15","pages":"4658-4661"},"PeriodicalIF":3.3000,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Near-diffraction-limited picosecond laser based on aberration-compensated end-pumped Nd:YAG rod amplifiers with more than 100 MW peak power and 300 W average power.\",\"authors\":\"Chuanguo Xie, Yifu Zhou, Xiaoyan Qiu, Xiaofeng He, Ziyue Chen, Jinbo Wu, Junyang Dong, Liying Chen, Bin Liu, Jian Chen, Bingfeng Ju, Chong Liu\",\"doi\":\"10.1364/OL.565263\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>A high-energy picosecond laser based on high-power diodes end-pumped Nd:YAG rod amplifiers with efficient birefringence compensation was demonstrated. The maximum linearly polarized output power from the amplifiers was up to 302 W at 250 kHz with a pulse energy of 1.2 mJ, achieving a peak power of more than 100 MW. It was found that once the issue of thermally induced birefringence in end-pumped Nd:YAG rod amplifiers is addressed, spherical aberration emerges as the primary factor responsible for beam degradation. The wavefront distortion of the amplified beam was measured, and a spherical aberration compensation plate was applied. The beam quality M<sup>2</sup> factor was improved from 1.9 to 1.2. An average power of 183 W green light was achieved through second harmonic generation with a conversion efficiency of 65%. This represents the highest, to the best of our knowledge, output with high beam quality for a picosecond Nd:YAG MOPA laser.</p>\",\"PeriodicalId\":19540,\"journal\":{\"name\":\"Optics letters\",\"volume\":\"50 15\",\"pages\":\"4658-4661\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2025-08-01\",\"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.565263\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.565263","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}
Near-diffraction-limited picosecond laser based on aberration-compensated end-pumped Nd:YAG rod amplifiers with more than 100 MW peak power and 300 W average power.
A high-energy picosecond laser based on high-power diodes end-pumped Nd:YAG rod amplifiers with efficient birefringence compensation was demonstrated. The maximum linearly polarized output power from the amplifiers was up to 302 W at 250 kHz with a pulse energy of 1.2 mJ, achieving a peak power of more than 100 MW. It was found that once the issue of thermally induced birefringence in end-pumped Nd:YAG rod amplifiers is addressed, spherical aberration emerges as the primary factor responsible for beam degradation. The wavefront distortion of the amplified beam was measured, and a spherical aberration compensation plate was applied. The beam quality M2 factor was improved from 1.9 to 1.2. An average power of 183 W green light was achieved through second harmonic generation with a conversion efficiency of 65%. This represents the highest, to the best of our knowledge, output with high beam quality for a picosecond Nd:YAG MOPA laser.
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.
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