Pub Date : 2024-03-27DOI: 10.1134/s0030400x23050041
E. P. Chukalina, T. A. Igolkina, D. N. Karimov
Abstract
We report on the high-resolution Fourier spectroscopy study of KY3F10:Pr3+ crystals. The analysis of the transmission and luminescence spectra allowed us to refine and supplement the information on the crystal-field levels of the Pr3+ ion. The value of the hyperfine splitting of the ground state of Pr3+ in the KY3F10 cubic host is estimated. The observed shape of the spectral lines indicates the presence of defects in the sample under study.
{"title":"Spectroscopic Study of KY3F10 Crystals Doped with Praseodymium","authors":"E. P. Chukalina, T. A. Igolkina, D. N. Karimov","doi":"10.1134/s0030400x23050041","DOIUrl":"https://doi.org/10.1134/s0030400x23050041","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>We report on the high-resolution Fourier spectroscopy study of KY<sub>3</sub>F<sub>10</sub>:Pr<sup>3+</sup> crystals. The analysis of the transmission and luminescence spectra allowed us to refine and supplement the information on the crystal-field levels of the Pr<sup>3+</sup> ion. The value of the hyperfine splitting of the ground state of Pr<sup>3+</sup> in the KY<sub>3</sub>F<sub>10</sub> cubic host is estimated. The observed shape of the spectral lines indicates the presence of defects in the sample under study.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140311968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-27DOI: 10.1134/s0030400x23020133
S. O. Leonov, M. P. Frolov, Yu. V. Korostelin, Ya. K. Skasyrsky, P. Yu. Fjodorow, A. S. Shelkovnikov, V. I. Kozlovsky, A. N. Kireev, M. A. Gubin
Abstract
The results on intensity noise and repetition frequency stability measurements for a passively mode-locked Cr:ZnSe laser pumped by a thulium-doped fiber laser at a wavelength of 1.94 pm are presented. The stability parameters and intensity noise are compared for three different generation regimes of the Cr:ZnSe laser. The laser operated at a repetition rate of 129.5 MHz and a central wavelength of 2.45 pm.
{"title":"Intensity Noise and Pulse Repetition Frequency Stability Measurements of a Passive Mode-Locked Cr:ZnSe Laser","authors":"S. O. Leonov, M. P. Frolov, Yu. V. Korostelin, Ya. K. Skasyrsky, P. Yu. Fjodorow, A. S. Shelkovnikov, V. I. Kozlovsky, A. N. Kireev, M. A. Gubin","doi":"10.1134/s0030400x23020133","DOIUrl":"https://doi.org/10.1134/s0030400x23020133","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The results on intensity noise and repetition frequency stability measurements for a passively mode-locked Cr:ZnSe laser pumped by a thulium-doped fiber laser at a wavelength of 1.94 pm are presented. The stability parameters and intensity noise are compared for three different generation regimes of the Cr:ZnSe laser. The laser operated at a repetition rate of 129.5 MHz and a central wavelength of 2.45 pm.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140312238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-27DOI: 10.1134/s0030400x23050144
A. O. Selsky, O. I. Moskalenko, A. A. Koronovsky
Abstract
Noise influence on characteristics of current, flowing through semiconductor superlattice of nanodevice with prospects of using in terahertz spectroscopy, is examined. It is demonstrated, that the limit voltage, at which the current oscillations start, slightly depends on noise intensity. Oscillation amplitude increases at some noise intensity values for case without magnetic field and in the presence of a tilted magnetic field. At the same time with increase of noise intensity at developed oscillations the basic frequency decreases, while higher harmonics amplitudes can significantly decrease.
{"title":"Noise Influence on Characteristics of Current, Flowing through Semiconductor Superlattice, in High Frequency Oscillation Mode","authors":"A. O. Selsky, O. I. Moskalenko, A. A. Koronovsky","doi":"10.1134/s0030400x23050144","DOIUrl":"https://doi.org/10.1134/s0030400x23050144","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Noise influence on characteristics of current, flowing through semiconductor superlattice of nanodevice with prospects of using in terahertz spectroscopy, is examined. It is demonstrated, that the limit voltage, at which the current oscillations start, slightly depends on noise intensity. Oscillation amplitude increases at some noise intensity values for case without magnetic field and in the presence of a tilted magnetic field. At the same time with increase of noise intensity at developed oscillations the basic frequency decreases, while higher harmonics amplitudes can significantly decrease.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140312540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-27DOI: 10.1134/s0030400x23050016
S. A. Bibicheva, A. E. Rupasov, P. A. Danilov, A. A. Ionin, N. A. Smirnov, S. I. Kudryashov, S. N. Shelygina, R. A. Zakoldaev
Abstract
The interaction of femtosecond laser pulses with the surface of silica glass has been studied. As a result of interference between the incident radiation and surface plasmon polaritons, the formation of self-organizing subwavelength periodic structures with a period of 250 nm was observed. The minimum pulse energy at which recording occurs without surface ablation has been revealed.
{"title":"Self-Organizing Half-Wave Gratings on the Surface of Silica Glass","authors":"S. A. Bibicheva, A. E. Rupasov, P. A. Danilov, A. A. Ionin, N. A. Smirnov, S. I. Kudryashov, S. N. Shelygina, R. A. Zakoldaev","doi":"10.1134/s0030400x23050016","DOIUrl":"https://doi.org/10.1134/s0030400x23050016","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The interaction of femtosecond laser pulses with the surface of silica glass has been studied. As a result of interference between the incident radiation and surface plasmon polaritons, the formation of self-organizing subwavelength periodic structures with a period of 250 nm was observed. The minimum pulse energy at which recording occurs without surface ablation has been revealed.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140312064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}