S. N. Smetanin, P. D. Kharitonova, A. G. Papashvili, L. I. Isaenko, A. F. Kurus, A. P. Yelisseyev, A. A. Goloshumova, A. A. Bushunov, A. A. Teslenko, V. A. Lazarev, M. K. Tarabrin
{"title":"具有增反射微结构的非线性LiGaS2和LiGaS2晶体将近红外激光辐射参数下转换为中红外","authors":"S. N. Smetanin, P. D. Kharitonova, A. G. Papashvili, L. I. Isaenko, A. F. Kurus, A. P. Yelisseyev, A. A. Goloshumova, A. A. Bushunov, A. A. Teslenko, V. A. Lazarev, M. K. Tarabrin","doi":"10.3103/S1541308X25600308","DOIUrl":null,"url":null,"abstract":"<p>The LiGaSe<sub>2</sub> and LiGaS<sub>2</sub> crystals with antireflection microstructures are comparatively tested as frequency down-converters into the mid-infrared range (4874 nm) in a two-stage optical parametric oscillator with a single cavity under intracavity pumping with a Nd:YLF laser with a wavelength of 1047 nm and a pulse duration of 25 ns. The first stage of optical parametric oscillation in the KTiOAsO<sub>4</sub> crystal produces two-micron radiation with wavelengths of 1724 and 2668 nm at a pulse energy of up to 2 mJ. In the second stage of conversion, the LiGaS<sub>2</sub> crystal with antireflection microstructures compared to LiGaSe<sub>2</sub> with antireflection microstructures proves to be more efficient despite the lower effective nonlinearity coefficient, which can be explained by the higher optical quality of the crystal. The energy of the radiation pulse with a wavelength of 4874 nm reaches the level of 100 nJ.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"33 4","pages":"291 - 297"},"PeriodicalIF":1.1000,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Parametric Down-Conversion of Near-IR Laser Radiation into the Mid-IR Range Using Nonlinear LiGaSe2 and LiGaS2 Crystals with Antireflection Microstructures\",\"authors\":\"S. N. Smetanin, P. D. Kharitonova, A. G. Papashvili, L. I. Isaenko, A. F. Kurus, A. P. Yelisseyev, A. A. Goloshumova, A. A. Bushunov, A. A. Teslenko, V. A. Lazarev, M. K. Tarabrin\",\"doi\":\"10.3103/S1541308X25600308\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The LiGaSe<sub>2</sub> and LiGaS<sub>2</sub> crystals with antireflection microstructures are comparatively tested as frequency down-converters into the mid-infrared range (4874 nm) in a two-stage optical parametric oscillator with a single cavity under intracavity pumping with a Nd:YLF laser with a wavelength of 1047 nm and a pulse duration of 25 ns. The first stage of optical parametric oscillation in the KTiOAsO<sub>4</sub> crystal produces two-micron radiation with wavelengths of 1724 and 2668 nm at a pulse energy of up to 2 mJ. In the second stage of conversion, the LiGaS<sub>2</sub> crystal with antireflection microstructures compared to LiGaSe<sub>2</sub> with antireflection microstructures proves to be more efficient despite the lower effective nonlinearity coefficient, which can be explained by the higher optical quality of the crystal. The energy of the radiation pulse with a wavelength of 4874 nm reaches the level of 100 nJ.</p>\",\"PeriodicalId\":732,\"journal\":{\"name\":\"Physics of Wave Phenomena\",\"volume\":\"33 4\",\"pages\":\"291 - 297\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2025-09-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physics of Wave Phenomena\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S1541308X25600308\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of Wave Phenomena","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.3103/S1541308X25600308","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Parametric Down-Conversion of Near-IR Laser Radiation into the Mid-IR Range Using Nonlinear LiGaSe2 and LiGaS2 Crystals with Antireflection Microstructures
The LiGaSe2 and LiGaS2 crystals with antireflection microstructures are comparatively tested as frequency down-converters into the mid-infrared range (4874 nm) in a two-stage optical parametric oscillator with a single cavity under intracavity pumping with a Nd:YLF laser with a wavelength of 1047 nm and a pulse duration of 25 ns. The first stage of optical parametric oscillation in the KTiOAsO4 crystal produces two-micron radiation with wavelengths of 1724 and 2668 nm at a pulse energy of up to 2 mJ. In the second stage of conversion, the LiGaS2 crystal with antireflection microstructures compared to LiGaSe2 with antireflection microstructures proves to be more efficient despite the lower effective nonlinearity coefficient, which can be explained by the higher optical quality of the crystal. The energy of the radiation pulse with a wavelength of 4874 nm reaches the level of 100 nJ.
期刊介绍：
Physics of Wave Phenomena publishes original contributions in general and nonlinear wave theory, original experimental results in optics, acoustics and radiophysics. The fields of physics represented in this journal include nonlinear optics, acoustics, and radiophysics; nonlinear effects of any nature including nonlinear dynamics and chaos; phase transitions including light- and sound-induced; laser physics; optical and other spectroscopies; new instruments, methods, and measurements of wave and oscillatory processes; remote sensing of waves in natural media; wave interactions in biophysics, econophysics and other cross-disciplinary areas.
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