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International Conference on Coherent and Nonlinear Optics最新文献

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Amplification and lasing at M-band of luminescence m波段发光的放大和激光
International Conference on Coherent and Nonlinear Optics Pub Date : 2010-09-10 DOI: 10.1117/12.881507
P. I. Khadzhi, I. Beloussov, N. Rosanov, S. Fedorov, D. A. Markov, A. V. Corovai
{"title":"Amplification and lasing at M-band of luminescence","authors":"P. I. Khadzhi, I. Beloussov, N. Rosanov, S. Fedorov, D. A. Markov, A. V. Corovai","doi":"10.1117/12.881507","DOIUrl":"https://doi.org/10.1117/12.881507","url":null,"abstract":"A new lasing mechanism for semiconductors like CuCl, CuBr is proposed based on the two-photon pumping of biexcitons from the ground state of the crystal and generation or amplification of light in the region of M-band of luminescence due to the optical exciton-biexciton conversion. It was shown that the net gain essentially depends on the level of two-photon pumping and rapidly decreases deep into the crystal due to the spatial depletion of pump radiation. Estimations for CuCl give the values of lasing photons with the energy about 3,2 eV and the maximum small signal gain about the value of the exciton absorption coefficient.","PeriodicalId":309922,"journal":{"name":"International Conference on Coherent and Nonlinear Optics","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115072564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Slab RF discharge overtone CO laser 平板射频放电泛音一氧化碳激光器
International Conference on Coherent and Nonlinear Optics Pub Date : 2010-09-10 DOI: 10.1117/12.879131
A. Ionin, A. Kozlov, L. Seleznev, D. Sinitsyn
{"title":"Slab RF discharge overtone CO laser","authors":"A. Ionin, A. Kozlov, L. Seleznev, D. Sinitsyn","doi":"10.1117/12.879131","DOIUrl":"https://doi.org/10.1117/12.879131","url":null,"abstract":"Compact slab repetitively-pulsed RF discharge overtone CO laser is developed. Results of parametric study of the laser with cryogenically cooled electrode system operating in sealed-off mode are reported. The average output power of the laser was up to 0.5 W with maximal efficiency of ~1.5 %. More than ~80 ro-vibrational overtone CO laser lines (summarizing two spectral ranges 2.5-3.1 μm and 3.1-4.2 μm corresponding to two sets of laser resonator mirrors used in the experiments) were observed. Start-up experiments on development the laser head of new design with enlarged active medium length (40 cm) were carried out. Preliminarily the output power of the overtone CO laser with the new laser head reached 0.75 W at the efficiency up to 1 %.","PeriodicalId":309922,"journal":{"name":"International Conference on Coherent and Nonlinear Optics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115312503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Laser treatment of the heterolayers GeO2:Ge-QDs GeO2:Ge-QDs异质层的激光处理
International Conference on Coherent and Nonlinear Optics Pub Date : 2010-09-10 DOI: 10.1117/12.882043
E. B. Gorokhov, V. Volodin, A. Kuznetsov, B. Chichkov, K. Astankova, I. Azarov
{"title":"Laser treatment of the heterolayers GeO2:Ge-QDs","authors":"E. B. Gorokhov, V. Volodin, A. Kuznetsov, B. Chichkov, K. Astankova, I. Azarov","doi":"10.1117/12.882043","DOIUrl":"https://doi.org/10.1117/12.882043","url":null,"abstract":"Treatments by femtosecond Ti-sapphire laser (wavelength is 800 nm, pulse duration is <30 fs) and nanosecond KrF excimer laser (wavelength is 248 nm, pulse duration is 25 ns) were performed to study the impact of laser fluence, pulse duration and energy of photons on the process of chemical and structural reconstructions in GeOx and GeO2:Ge heterolayers. The solid GeOx films are metastable and decompose into two phases - Ge and GeO2. Nanosecond KrF laser irradiation produces significant shrinkage of GeOx films and GeO2:Ge heterolayers caped by thin SiNxOy or SiO2 films. Pulse annealing by both types of lasers stimulate as the process of nanoclusters forming and crystallization of initial amorphous Ge-nanoclusters in the GeO2 matrix. The possibility to use the solid germanium monoxide (GeO(s)) and GeO2:Ge heterolayers (without cap layers) as nano-resist in laser nanolithography was demonstrated. The new nanostructured material was formed - the layers of nanofoam GeO2 which can be obtained only with application of femtosecond laser pulse treatments.","PeriodicalId":309922,"journal":{"name":"International Conference on Coherent and Nonlinear Optics","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123211474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The comparison of models for calculating heat conduction losses in laser cutting of metals 金属激光切割热传导损失计算模型的比较
International Conference on Coherent and Nonlinear Optics Pub Date : 2010-09-10 DOI: 10.1117/12.881859
M. G. Galushkin, V. Golubev, R. V. Grishaev, M. Khomenko
{"title":"The comparison of models for calculating heat conduction losses in laser cutting of metals","authors":"M. G. Galushkin, V. Golubev, R. V. Grishaev, M. Khomenko","doi":"10.1117/12.881859","DOIUrl":"https://doi.org/10.1117/12.881859","url":null,"abstract":"Numerical comparisons of some models for estimating the power losses due to heat conduction in process of gas-assisted laser cutting are presented in this paper. In spite of differences between these models their results match fairly well.","PeriodicalId":309922,"journal":{"name":"International Conference on Coherent and Nonlinear Optics","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130305027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Characterization of Ce3+ and Yb3+ doped LiF-LuF3-YF3 solid solutions as new UV active media Ce3+和Yb3+掺杂LiF-LuF3-YF3固溶体作为新型UV活性介质的表征
International Conference on Coherent and Nonlinear Optics Pub Date : 2010-09-10 DOI: 10.1117/12.881885
A. Nizamutdinov, V. Semashko, A. Naumov, S. Korableva, M. Marisov, V. Efimov, L. Nurtdinova
{"title":"Characterization of Ce3+ and Yb3+ doped LiF-LuF3-YF3 solid solutions as new UV active media","authors":"A. Nizamutdinov, V. Semashko, A. Naumov, S. Korableva, M. Marisov, V. Efimov, L. Nurtdinova","doi":"10.1117/12.881885","DOIUrl":"https://doi.org/10.1117/12.881885","url":null,"abstract":"Here laser studies of Ce3+:LiLuxMe1-x F4 (Me=Y3+,Yb3+) mixed crystals homologous to well-known Ce3+:LiYF4and Ce3+:LiLuF4 UV crystalline active media are reported. Optical spectroscopy and X-ray diffraction studies have proved scheelite structure of the investigated mixture crystals. Advantages of LiLuYF4:Ce3++Yb3+ mixture crystals were detected. Among them an opportunity to wider tuning range of laser oscillation in comparison to LiLuF4:Ce3++Yb3+ active medium by means of varying YF3/LuF3 content relation. As it was shown from laser experiments mutual shift of 5d-4f emitting transition of Ce3+ ions and color centers absorption band due to lattice parameter change gives an optimum for YF3/LuF3 content relation corresponding to minimal overlap and maximal amplification band. EPR and optical spectroscopy revealed the optimum ratio of Y3+ ions and Lu3+ in solid solutions of LiF-LuF3-YF3, where the segregation coefficient Ce3+ of ions is increased 3-5 times compared with crystals LiYF4 and LiLuF4.","PeriodicalId":309922,"journal":{"name":"International Conference on Coherent and Nonlinear Optics","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125256589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Photophysical, photochemical, and lasing properties of dipyrromethenes: active media for tunable lasers 二吡咯烯的光物理、光化学和激光特性:可调谐激光器的活性介质
International Conference on Coherent and Nonlinear Optics Pub Date : 2010-09-10 DOI: 10.1117/12.880914
L. Samsonova, R. Kuznetsova, T. Kopylova, E. Antina, N. Zulina, E. N. Tel'minov, Yu. A. Aksenova, S. Yutanova
{"title":"Photophysical, photochemical, and lasing properties of dipyrromethenes: active media for tunable lasers","authors":"L. Samsonova, R. Kuznetsova, T. Kopylova, E. Antina, N. Zulina, E. N. Tel'minov, Yu. A. Aksenova, S. Yutanova","doi":"10.1117/12.880914","DOIUrl":"https://doi.org/10.1117/12.880914","url":null,"abstract":"Photophysical and lasing properties of the well known PM567, PM580 and PM697 and three new dipyrromethene derivatives are presented. The laser efficiency and spectrum characteristics were investigated as functions of dye concentration and pumping intensity in ethanol solutions under second harmonic of Nd-YAG-laser. Laser characteristics and photostability for PM567 are presented also in the solid state matrixes (P(MMA=13%POSS), PMMA).","PeriodicalId":309922,"journal":{"name":"International Conference on Coherent and Nonlinear Optics","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128825706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nonlinear refraction and nonlinear absorption in nanoporous glass composite activated by functional dyes 功能染料活化纳米多孔玻璃复合材料的非线性折射和非线性吸收
International Conference on Coherent and Nonlinear Optics Pub Date : 2010-09-10 DOI: 10.1117/12.881883
L. M. Koldunov, M. Koldunov, A. Petuhov, I. Pokotilo, A. V. Sizuhin
{"title":"Nonlinear refraction and nonlinear absorption in nanoporous glass composite activated by functional dyes","authors":"L. M. Koldunov, M. Koldunov, A. Petuhov, I. Pokotilo, A. V. Sizuhin","doi":"10.1117/12.881883","DOIUrl":"https://doi.org/10.1117/12.881883","url":null,"abstract":"The nonlinear refraction and nonlinear absorption of 40 nanosecond (FWHM) 532 nm pulses through the samples made of nanoporous glass polymer composite doped with phthalocyanine and porphyrin dyes is investigated. The laser damage resistance of 28 nanosecond (FWHM) 532 nm pulses in nanoporous glass polymer composite is measured. It is demonstrated that the nanoporous glass polymer composite is a good solid-state host material for nonlinear element of laser optics.","PeriodicalId":309922,"journal":{"name":"International Conference on Coherent and Nonlinear Optics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124695852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Control over the parameters of THz waves interacting with semiconductor free carriers 太赫兹波与半导体自由载流子相互作用参数的控制
International Conference on Coherent and Nonlinear Optics Pub Date : 2010-09-10 DOI: 10.1117/12.880731
E. V. Moiseenko, A. V. Shepelev
{"title":"Control over the parameters of THz waves interacting with semiconductor free carriers","authors":"E. V. Moiseenko, A. V. Shepelev","doi":"10.1117/12.880731","DOIUrl":"https://doi.org/10.1117/12.880731","url":null,"abstract":"An exploration of THz range causes the necessity of dynamic control over the parameters of the radiation - modulation of its intensity, phase and polarization. In this range optical properties of semiconductors are mainly defined by the interaction of radiation with semiconductor plasma. A strong influence of the external field on parameters of a plasma of any kind, including the carrier plasma, opens possibilities for controlling parameters of THz radiation. The characteristic modulation time is defined by the carriers relaxation time (about 10-12 s), i.e. has the same order of magnitude as a THz wave period. For the calculation of an influence of an external quasi-static electric field on the parameters of the plasma and on the optical properties of the semiconductor all main mechanisms of carrier scattering and relaxation were accounted. For AIIIBV semiconductors the calculations of the response of the complex permittivity of carrier plasma on the external field were done numerically. An analysis of the reflection coefficients based on generalized Fresnel equations showed a variation of the reflection coefficient of the semiconductor under the influence of the field by dozens percent. Static parameters of semiconductors which provide a maximum modulation depth were defined. In case when an external field is a THz band field itself, the dependence of the permittivity on the intensity results in the harmonics generation. An analysis of the specific features of the generation showed an appearance of frequency resonances and a unique non-monotonic way of the dependence of the harmonic intensity on the pump wave field.","PeriodicalId":309922,"journal":{"name":"International Conference on Coherent and Nonlinear Optics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121148337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Ion synthesis and nonlinear optical properties of metal nanoparticles 金属纳米粒子的离子合成及非线性光学性质
International Conference on Coherent and Nonlinear Optics Pub Date : 2010-09-10 DOI: 10.1117/12.881143
A. Stepanov
{"title":"Ion synthesis and nonlinear optical properties of metal nanoparticles","authors":"A. Stepanov","doi":"10.1117/12.881143","DOIUrl":"https://doi.org/10.1117/12.881143","url":null,"abstract":"Recent results on synthesis of silver nanoparticles by ion implantation in various dielectrics are presented. Composites demonstrate specific nonlinear-optical properties such as saturated and two-photon absorption in visible spectral area.","PeriodicalId":309922,"journal":{"name":"International Conference on Coherent and Nonlinear Optics","volume":"330 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117063732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Cloning of microstructures due to irradiation of thin gold foil by femtosecond laser radiation 飞秒激光辐照薄金箔的微结构克隆
International Conference on Coherent and Nonlinear Optics Pub Date : 2010-09-10 DOI: 10.1117/12.880200
B. Mironov, S. A. Aseyev, S. Chekalin
{"title":"Cloning of microstructures due to irradiation of thin gold foil by femtosecond laser radiation","authors":"B. Mironov, S. A. Aseyev, S. Chekalin","doi":"10.1117/12.880200","DOIUrl":"https://doi.org/10.1117/12.880200","url":null,"abstract":"The analysis of the possibilities of microstructuring (micromachining) of various solids by sharply focused femtosecond laser (fsl) capable of providing for a high intensity for moderate pulse energies remains quite topical. Usually the process takes place immediately at the focal spot and an extended structure can only be formed by scanning the sample. In our experiments focusing fsl pulses into a vacuum setup we produced extended microstructures (microdamages) on a few tens nm thickness gold foil deposited onto a fused-quartz substrate. The structure length has been an order of magnitude larger than the typical size of the irradiated region. The detection of Au+ photoions ensured a highly-sensitivite on-line diagnostics of this phenomenon and in the limit can be used for the probing of the picostructuring of solids irradiated by a laser. In the next step we are \"cloning\" the microstructure (microdamage) from one surface to another when there is a few tens microns vacuum-spacing between them and only one surface with a metal film is \"directly\" irradiated by fsl pulses. For the expertiment we prepared two similar fused-quartz prisms and pressed one sample to another. The clearance is determined by the thickness of a spacer (Cu-foil). The possible explanations are given.","PeriodicalId":309922,"journal":{"name":"International Conference on Coherent and Nonlinear Optics","volume":"385 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126033141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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