Quantum Electronics最新文献

{"title":"Study of second optical harmonic generation in terahertz pulse-induced antiferromagnetic NiO","authors":"O. Chefonov, A. Ovchinnikov, M. Agranat","doi":"10.1070/qel17996","DOIUrl":"https://doi.org/10.1070/qel17996","url":null,"abstract":"Intense terahertz pulses and a process of second harmonic generation are promising methods for exciting and studying an ultrafast dynamic response in magnetically ordered systems, ferroelectrics, and multiferroics on the picosecond time scale. In the present work, we report experimental results on generation of second optical harmonic in centrosymmetric antiferromagnetic NiO induced by intense terahertz pulses with an electric field strength of up to 20 MV cm−1.","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"466 1","pages":"269 - 273"},"PeriodicalIF":0.9,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82721289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Backward SRS suppression of picosecond pulses in water upon moving the pump beam waist from the water volume through the surface","authors":"S. M. Pershin, A. I. Vodchits, I. Khodasevich, V. Orlovich, A. Kudryavtseva, N. V. Tcherniega","doi":"10.1070/qel18005","DOIUrl":"https://doi.org/10.1070/qel18005","url":null,"abstract":"We report, for the first time to our knowledge, suppression of backward stimulated Raman scattering (BSRS) of picosecond pulses (57 ps, 532 nm) due to the development of optical breakdown in the surface (0 – 3 mm) water layer with a shift of the beam waist (lens focal length of 83 mm) to the water – air interface without changing the pump pulse energy (∼1.3 – 1.5 mJ). In this case, SRS generation in forward direction is observed even in the presence of breakdown. When the focal plane coincides with the surface, the BSRS generation is restored without optical breakdown, despite an increase in the pump radiation intensity due to a decrease in the beam diameter. It is significant that the optical breakdown threshold in the water volume was unattainable even with an increase in the pump pulse energy by more than an order of magnitude – up to 16 mJ. The mechanism of self-consistent summation of nonlinear optical processes, such as electrostriction, beam self-focusing, beam phase conjugation, and BSRS pulse compression is discussed.","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"10 1","pages":"283 - 288"},"PeriodicalIF":0.9,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90555405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Post-compression of femtosecond laser pulses using self-phase modulation: from kilowatts to petawatts in 40 years","authors":"E. Khazanov","doi":"10.1070/qel18001","DOIUrl":"https://doi.org/10.1070/qel18001","url":null,"abstract":"The pulse duration at the output of femtosecond lasers is usually close to the Fourier limit, and can be shortened by increasing the spectral width. To this end, use is made of self-phase modulation when a pulse propagates in a medium with cubic nonlinearity. Then, the pulse with a chirp (frequency dependence of the spectrum phase) is compressed due to a linear dispersion element, which introduces a chirp of the same modulus, but opposite in sign. This pulse post-compression, known since the 1960s, has been widely used and is being developed up to the present for pulses with energies from fractions of a nJ to tens of J. The review is devoted to the theoretical foundations of this method, problems of energy scaling, and a discussion of the results of more than 150 experimental studies.","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"6 1","pages":"208 - 226"},"PeriodicalIF":0.9,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86116897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phase combining of radiation from a two-channel explosively pumped photodissociation iodine laser with an SBS mirror","authors":"S. Garanin, Y. Dolgopolov, G. N. Kachalin, A. V. Kopalkin, S. M. Kulikov, S. N. Pevnyi, F. Starikov, S. A. Sukharev","doi":"10.1070/qel17997","DOIUrl":"https://doi.org/10.1070/qel17997","url":null,"abstract":"A two-channel double-pass iodine explosively pumped photodissociation laser (EPPL) with an explosively pumped master oscillator (MO) and an SBS mirror is studied. The radiation source, determined by an aperture 6 mm in diameter, through which the radiation from MO enters the turbulent surface air path, is located at a distance of 2.5 km from the amplifier unit input. An SBS mirror with a kinoform raster of microlenses is used to compensate for the amplifier and path optical inhomogeneities and to match the phases in the EPPL channels. The energy and spatial characteristics of the EPPL output radiation are studied experimentally and numerically. Good agreement is obtained between the experimental and calculated distribution of the energy density of the output EPPL radiation in the plane of the MO aperture, which is a pattern of interference between the two channels. The maximum energy density in the aperture plane is by more than 4 times greater than in the case of a single-channel EPPL.","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"96 1","pages":"289 - 295"},"PeriodicalIF":0.9,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87685379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Light bullets in transparent dielectrics","authors":"V.P. Kandidov, E.D. Zaloznaya, A.E. Dormidonov, V.O. Kompanets, S.V. Chekalin","doi":"10.1070/qel18000","DOIUrl":"https://doi.org/10.1070/qel18000","url":null,"abstract":"This paper presents a retrospective analysis of the development of notions in nonlinear optics: from beam self-focusing and pulse filamentation to light bullets – wave packets extremely compressed in space and time during laser light propagation in the bulk of a transparent medium. We describe the state of the art in studies of mid-IR light bullets in condensed media and air.","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"86 ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138514197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sixty years of nonlinear optics","authors":"S. Grechin, A. Savel’ev","doi":"10.1070/QEL18010","DOIUrl":"https://doi.org/10.1070/QEL18010","url":null,"abstract":"Apparently, the concept of ‘nonlinear optics’ was first introduced by S.I. Vavilov when analysing the results of absorption saturation in uranium glasses obtained in 1926. In particular, he noted that “In an absorbing medium ‘nonlinearity’ should be observed not only in relation to absorption. The latter is related to dispersion, so the speed of light propagation in a medium, generally speaking, must also depend on the light power”. One of the defining criteria for nonlinear optics, according to S.I. Vavilov, is the violation of the superposition principle. Sixteen years later, in 1942, E. SchrÖdinger, considering the problem of light scattering by electrons, also defined the processes as nonlinearly optical. Nonlinear optics, as an independent branch of physics, dates back to the work by Franken et al. in 1961, when the generation of the second harmonic of ruby laser radiation was obtained at an extremely low efficiency (~10–12) in terms of the number of photons: only 106 second harmonic photons. But already in 1962, second harmonic generation was realised in the phase-matched regime with a conversion efficiency that was several orders of magnitude higher. Then, literally within a few years, it was possible to obtain effective generation of the third and fourth harmonics and of the sum frequency, to implement parametric amplification and generation, and to observe stimulated Raman scattering, two-photon absorption, and other nonlinear effects. The works of Pockels, Kerr, Faraday and others, performed back in the 19th century, turned out to be the basis for understanding the essence of the effects observed, and research on nonlinear optics itself became a logical continuation of work on radiophysics, nonlinear electrodynamics of the microwave range, optics, hydrodynamics and acoustics, the theory of oscillations, etc. As with many other branches of physics, it is difficult to give an exact definition of nonlinear optics by specifying its boundaries. In 1965 one of the founders of nonlinear optics, R.V. Khokhlov, divided nonlinear wave processes into two groups: dispersive and nondispersive, in each of which these effects are possible in reactive and absorbing media. Such a definition does not raise the question that nonlinear optical processes are possible only under high-intensity irradiation, which is not infrequently done even today. R. Boyd adheres to the same approach in his 2020 monograph, with clarification for parametric and nonparametric processes in dispersive media. It is difficult to say to what extent the existing definitions correspond to the problems of nonlinear optics of tomorrow, but even now the rapid development of quantum nonlinear optics clearly indicates the importance of nonlinear optical processes occurring with single quanta, i.e., in the regime of extremely low intensities. Research in the field of nonlinear optics is carried out by many teams of scientists around the world. An invaluable contribution to the formation a","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"9 1","pages":"207 - 207"},"PeriodicalIF":0.9,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79523537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient SRS of chirped Ti : sapphire laser pulses in BaWO4 crystals","authors":"I. Kinyaevskiy, V. Kovalev, A. Koribut, Y. Grudtsyn, L. Seleznev, E. Dunaeva, A. Ionin","doi":"10.1070/qel18002","DOIUrl":"https://doi.org/10.1070/qel18002","url":null,"abstract":"We report an experimental study of SRS of chirped 40-ps Ti : sapphire laser pulses with a transform-limited duration of 0.35 ps and centre wavelength of 925 nm in BaWO4 crystals. The highest generation efficiency for the ∼925 cm−1 shifted Stokes signal of SRS by the ν 1 vibrational mode of BaWO4 crystals has been reached using three sequentially located crystals with a total length of 3.3 cm. The position of the crystals after a focusing mirror has been optimised, which has ensured a pump-to-Stokes conversion efficiency of ∼50 % in terms of spectral brightness and ∼20 % in terms of pulse energy.","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"39 1","pages":"278 - 282"},"PeriodicalIF":0.9,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73778847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the ninetieth birthday of O.N. Krokhin","authors":"S. Bagayev, S. Garanin, N. Kolachevsky, V. Konov, I. B. Kovsh, Y. Kulchin, V. Panchenko, Yu. M. Popov, G. Rykovanov, A. S. Semenov, A. Sergeev, R. Suris, A. Shalagin, I. Shcherbakov","doi":"10.1070/qel18009","DOIUrl":"https://doi.org/10.1070/qel18009","url":null,"abstract":"","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"54 1","pages":"306 - 306"},"PeriodicalIF":0.9,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74043133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optical and generation characteristics of new nonlinear Ba2Ga8GeS16 and Ba2Ga8(GeSe2)S14 crystals for the mid-IR range","authors":"V. Badikov, D. V. Badikov, G. Shevyrdyaeva, V. Laptev, A. A. Melnikov, S. Chekalin","doi":"10.1070/qel17995","DOIUrl":"https://doi.org/10.1070/qel17995","url":null,"abstract":"Ba2Ga8GeS16 and Ba2Ga8(GeSe2)S14 single crystals of large size and good optical quality have been grown for the first time. Their linear optical characteristics – transmission spectra in the range of 0.3 – 25 μm, dispersion of principal refractive indices, and birefringence – have been measured. Irradiation of the crystals by 100-fs laser pulses with a wavelength of 8.3 μm initiated second-harmonic generation with an efficiency comparable with that obtained for the AgGaS2 crystal.","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"1 1","pages":"296 - 300"},"PeriodicalIF":0.9,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83166055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonlinear frequency conversion of a Ho :YAG laser beam","authors":"K. V. Vorontsov, S. Garanin, N.A. Egorov, N. Zakharov, R.A. Zorin, V.B. Kolomeets, V.I. Lazarenko, A. Nadezhin, G.N. Nomakonov, K.A. Tulyakov, Yu. N. Frolov","doi":"10.1070/qel18007","DOIUrl":"https://doi.org/10.1070/qel18007","url":null,"abstract":"We report the results of experiments on frequency conversion of a Ho : YAG laser beam (wavelength λ ∼ 2.1 μm) into the near-, mid-, and far-IR regions, aimed at expanding the spectral composition of compact multispectral sources of coherent radiation. The experimentally found laser conversion efficiency into the second harmonic reaches 32 % and 54 % in the cw and repetitively pulsed regimes, respectively. The parametric conversion efficiency into the mid-IR range (λ = 3.5 – 5.0 μm) reaches 55 %, while for the far-IR range (λ = 8 – 8.2 μm) it turns out to be 10.5 %.","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"97 1","pages":"262 - 268"},"PeriodicalIF":0.9,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80685112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}