{"title":"基于甘汞晶体的超宽带红外偏振光束合成器,效率超过92%,波前畸变低","authors":"Zhongjie Yue, Lulu Yang, Jian Song, Zhongjun Zhai, Lin Liu, Xin Wang, Xutang Tao, Guodong Zhang","doi":"10.1021/acsphotonics.5c00664","DOIUrl":null,"url":null,"abstract":"Midwave and long-wave infrared (MW & LWIR) lasers are essential for applications such as infrared detection and counteraction. However, generating high-power MW & LWIR lasers directly is challenging. Polarization beam combining technology provides an effective method to achieve high-power lasers with excellent beam quality. This study introduces Glan–Foucault type polarization beam combiner (PBC) based on the calomel (Hg<sub>2</sub>Cl<sub>2</sub>) single crystal (SC), which exhibits an exceptionally wide transmission range (0.38–25 μm), ultrahigh birefringence of 0.533@4.6 μm, and a favorable laser-induced damage threshold (LIDT<sub>(001)</sub> = 8.06 J/cm<sup>2</sup>@3.5 μm). The designed PBCs demonstrate an outstanding extinction ratio (ER) of up to 40 dB and a theoretical maximal transmittance of 81% across the full spectrum. When two fundamental mode Gaussian beams from the quantum cascade lasers (QCLs) were combined, the PBCs with infrared antireflection (AR) coatings achieved combining efficiencies of 93.5% at 4.6 μm and 92.4% at 9.2 μm, along with beam quality factors <i>M</i><sup>2</sup> of 1.23 and 1.17, respectively, without noticeable degradation. This work presents a novel polarization component for efficiently scaling the laser output power and maintaining good beam quality across mid- and far-infrared range.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"9 1","pages":""},"PeriodicalIF":6.5000,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ultrabroadband Infrared Polarization Beam Combiner Based on Calomel Crystals with High Efficiency Exceeding 92% and Low Wavefront Distortion\",\"authors\":\"Zhongjie Yue, Lulu Yang, Jian Song, Zhongjun Zhai, Lin Liu, Xin Wang, Xutang Tao, Guodong Zhang\",\"doi\":\"10.1021/acsphotonics.5c00664\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Midwave and long-wave infrared (MW & LWIR) lasers are essential for applications such as infrared detection and counteraction. However, generating high-power MW & LWIR lasers directly is challenging. Polarization beam combining technology provides an effective method to achieve high-power lasers with excellent beam quality. This study introduces Glan–Foucault type polarization beam combiner (PBC) based on the calomel (Hg<sub>2</sub>Cl<sub>2</sub>) single crystal (SC), which exhibits an exceptionally wide transmission range (0.38–25 μm), ultrahigh birefringence of 0.533@4.6 μm, and a favorable laser-induced damage threshold (LIDT<sub>(001)</sub> = 8.06 J/cm<sup>2</sup>@3.5 μm). The designed PBCs demonstrate an outstanding extinction ratio (ER) of up to 40 dB and a theoretical maximal transmittance of 81% across the full spectrum. When two fundamental mode Gaussian beams from the quantum cascade lasers (QCLs) were combined, the PBCs with infrared antireflection (AR) coatings achieved combining efficiencies of 93.5% at 4.6 μm and 92.4% at 9.2 μm, along with beam quality factors <i>M</i><sup>2</sup> of 1.23 and 1.17, respectively, without noticeable degradation. This work presents a novel polarization component for efficiently scaling the laser output power and maintaining good beam quality across mid- and far-infrared range.\",\"PeriodicalId\":23,\"journal\":{\"name\":\"ACS Photonics\",\"volume\":\"9 1\",\"pages\":\"\"},\"PeriodicalIF\":6.5000,\"publicationDate\":\"2025-06-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Photonics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1021/acsphotonics.5c00664\",\"RegionNum\":1,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Photonics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1021/acsphotonics.5c00664","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Ultrabroadband Infrared Polarization Beam Combiner Based on Calomel Crystals with High Efficiency Exceeding 92% and Low Wavefront Distortion
Midwave and long-wave infrared (MW & LWIR) lasers are essential for applications such as infrared detection and counteraction. However, generating high-power MW & LWIR lasers directly is challenging. Polarization beam combining technology provides an effective method to achieve high-power lasers with excellent beam quality. This study introduces Glan–Foucault type polarization beam combiner (PBC) based on the calomel (Hg2Cl2) single crystal (SC), which exhibits an exceptionally wide transmission range (0.38–25 μm), ultrahigh birefringence of 0.533@4.6 μm, and a favorable laser-induced damage threshold (LIDT(001) = 8.06 J/cm2@3.5 μm). The designed PBCs demonstrate an outstanding extinction ratio (ER) of up to 40 dB and a theoretical maximal transmittance of 81% across the full spectrum. When two fundamental mode Gaussian beams from the quantum cascade lasers (QCLs) were combined, the PBCs with infrared antireflection (AR) coatings achieved combining efficiencies of 93.5% at 4.6 μm and 92.4% at 9.2 μm, along with beam quality factors M2 of 1.23 and 1.17, respectively, without noticeable degradation. This work presents a novel polarization component for efficiently scaling the laser output power and maintaining good beam quality across mid- and far-infrared range.
期刊介绍:
Published as soon as accepted and summarized in monthly issues, ACS Photonics will publish Research Articles, Letters, Perspectives, and Reviews, to encompass the full scope of published research in this field.