Quantum Electronics最新文献_第3页

Thermoelastic stresses in high-power CW diode laser arrays assembled on CuW and AlN submounts 高功率连续波二极管激光阵列在CuW和AlN底座上的热弹性应力

IF 0.9 4区工程技术

Quantum Electronics Pub Date : 2022-05-01 DOI: 10.1070/qel18040

V. P. Gordeev, V. A. Oleshchenko, V. V. Bezotosnyi

引用次数: 0

Interaction of an array of single-electron quantum dots with a microcavity field with allowance for Coulomb correlations 考虑库仑相关的单电子量子点阵列与微腔场的相互作用

IF 0.9 4区工程技术

Quantum Electronics Pub Date : 2022-05-01 DOI: 10.1070/QEL18046

A. V. Tsukanov, I. Kateev

引用次数: 2

Two-level gas laser with transverse diode pumping 具有横向二极管泵浦的二能级气体激光器

IF 0.9 4区工程技术

Quantum Electronics Pub Date : 2022-05-01 DOI: 10.1070/QEL18038

A. Parkhomenko, A. Shalagin

{"title":"Two-level gas laser with transverse diode pumping","authors":"A. Parkhomenko, A. Shalagin","doi":"10.1070/QEL18038","DOIUrl":"https://doi.org/10.1070/QEL18038","url":null,"abstract":"We theoretically study a new method for generating laser radiation by a two-level system without population inversion in the ‘red’ wing of its spectral line under resonant absorption of broadband radiation from pump laser diodes. A two-level system simulates the atoms of an active gas in an atmosphere of a high-pressure buffer gas. The effect results from the fact that in the ‘red’ wing of the spectral line, the probability of stimulated emission exceeds the probability of absorption if the homogeneous broadening due to the interaction of particles with the buffer gas significantly exceeds the natural one (at high pressures of the buffer gas). Analytical formulae are obtained that describe the operation of a two-level gas laser with transverse diode pumping. It is found that the longer the active medium, the higher the buffer gas pressure and pump radiation intensity, and the smaller the width of the pump radiation spectrum, the greater the efficiency of conversion of pump radiation into laser radiation. In a sufficiently long active medium (the length of the medium is 50 times its width), the conversion efficiency can reach 44 % at a buffer gas pressure of 5 atm, a pump diode radiation intensity of 3 kW cm−2, and a half-width of its spectrum of 1 cm−1. A two-level gas laser with transverse diode pumping is capable of generating continuous optical radiation with a very high (up to 100 kW) power. The frequency of laser radiation can be tuned by several tens of cm−1.","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"37 1","pages":"426 - 312"},"PeriodicalIF":0.9,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85032915","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}

引用次数: 1

Optical second harmonic generation: role of symmetry and local resonances (review) 光学二次谐波的产生:对称性和局部共振的作用(复习)

IF 0.9 4区工程技术

Quantum Electronics Pub Date : 2022-05-01 DOI: 10.1070/qel18037

I. Baranova, T. Dolgova, I. Kolmychek, A. Maydykovskiy, E. Mishina, T. Murzina, A. A. Fedyanin

{"title":"Optical second harmonic generation: role of symmetry and local resonances (review)","authors":"I. Baranova, T. Dolgova, I. Kolmychek, A. Maydykovskiy, E. Mishina, T. Murzina, A. A. Fedyanin","doi":"10.1070/qel18037","DOIUrl":"https://doi.org/10.1070/qel18037","url":null,"abstract":"We report some results of studying optical second-harmonic generation (SHG) on surfaces and at interfaces of centrosymmetric media, in resonant nano- and microstructures, and in ferroelectric materials. The research was carried out at the Department of Quantum Electronics of the Lomonosov Moscow State University under the supervision of Professor O.A. Aktsipetrov, and subsequently developed by his disciples. As examples that clearly demonstrate the possibilities of the SHG method for examining nonstandard objects of nonlinear optics, we discuss the behaviour of the nonlinear optical response of single-crystal silicon and germanium surfaces and their interfaces with oxides, as well as nonlinear electroreflection. Optical interferometry and its possibilities are briefly described using the example of these systems. Unique sensitivity of SHG to the symmetry and resonance properties of nanostructures, including magnetic ones, is shown, which determines the efficiency of this method for investigating such systems. Finally, we demonstrate that the SHG effect is a unique remote and sensitive method for studying ferroelectric structures.","PeriodicalId":20775,"journal":{"name":"Quantum Electronics","volume":"50 1","pages":"407 - 312"},"PeriodicalIF":0.9,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83991837","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}

引用次数: 1

Superluminescence in the phonon wing of the photoluminescence spectrum of NV centres in diamond optically pumped at λ = 532 nm λ = 532 nm光抽运金刚石NV中心光致发光光谱声子翼的超发光

IF 0.9 4区工程技术

Quantum Electronics Pub Date : 2022-05-01 DOI: 10.1070/qel18044

E. Lipatov, D. E. Genin, M. Shulepov, E. N. Tel’minov, A. Savvin, A. Eliseev, V. Vins

引用次数: 3

The concept of a stigmatic flat-field X-ray spectrograph based on conical diffraction 基于锥形衍射的柱头平场x射线摄谱仪的概念

IF 0.9 4区工程技术

Quantum Electronics Pub Date : 2022-05-01 DOI: 10.1070/QEL18048

A. O. Kolesnikov, E. Ragozin, A. Shatokhin

引用次数: 0

Attenuation of the intensities of spectral components of a multiwavelength pulsed laser system by means of the Bragg diffraction of radiation by several acoustic waves 用几种声波辐射的布拉格衍射法对多波长脉冲激光系统光谱成分强度的衰减