发布求助
文献互助 智能选刊 最新文献

International Conference on Laser and Laser Information Technologies最新文献

筛选
英文 中文
High-power CW CO2 laser beam channeled penetration into liquid 大功率连续波CO2激光束穿透液体
International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563216
V. Golubev, A. Grezev, N. Kumar, N. Grezev, M. Kupatadze, G. L. Poltev
{"title":"High-power CW CO2 laser beam channeled penetration into liquid","authors":"V. Golubev, A. Grezev, N. Kumar, N. Grezev, M. Kupatadze, G. L. Poltev","doi":"10.1117/12.563216","DOIUrl":"https://doi.org/10.1117/12.563216","url":null,"abstract":"The results are presented of an experimental research and estimating modeling of kW-level CW CO2 laser focused beam penetration into liquid and sustaining keyhole (KH). The conditions of evaporative and turbulent convective heat losses from the KH surface to the bulk of the liquid were varied. A drastic dependence of KH depth upon heat exchange conditions was stated.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131382978","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
Fluorescent and photodynamic properties of infrared photosensitizer bacteriochlorophyllide-serine 红外光敏剂细菌叶绿素丝氨酸的荧光和光动力学性质
International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563144
I. Meerovich, I. Kubasova, G. A. Meerovich, A. A. Stratonnikov, S. Demura, A. Brandis, V. Rosenbach‐Belkin, A. Scherz
{"title":"Fluorescent and photodynamic properties of infrared photosensitizer bacteriochlorophyllide-serine","authors":"I. Meerovich, I. Kubasova, G. A. Meerovich, A. A. Stratonnikov, S. Demura, A. Brandis, V. Rosenbach‐Belkin, A. Scherz","doi":"10.1117/12.563144","DOIUrl":"https://doi.org/10.1117/12.563144","url":null,"abstract":"The study is devoted to investigation of fluorescent and photodynamic properties of near-infrared photosensitizer bacteriochlorophyllide-serine. The peculiarities of its fluorescence under different laser excitation conditions, dynamics of concentration and selectivity of accumulation were investigated. Photodynamic therapy of mice and investigation of tissue deoxygenation during tumor irradiation were performed. It was shown that bacteriochlorophyllide-serine is an effective photosensitizer for PDT and fluorescent diagnostics of tumors.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124799327","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
Power pulses source 功率脉冲源
International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563078
Roumen Karov, R. Trendafilov, Galina Dicheva
{"title":"Power pulses source","authors":"Roumen Karov, R. Trendafilov, Galina Dicheva","doi":"10.1117/12.563078","DOIUrl":"https://doi.org/10.1117/12.563078","url":null,"abstract":"Laser diodes power sources providing currents ranging up to 100 amperes for a period of 5 ns to 100 μs are well known. Power Pulses Source is researched and refined in this paper, which gives the possibility for expanding of its application in the field of optical electronics, medicine and welding technologies. The power pulses source is controlled by universal and general elements. The power pulses source possibilities are researched in theory and experiments, with present supply providing currents ranging from 30 to 300 amperes and a period of 100 ns to 10 μs. A multiple variation powering from 24 to 50 volts is expected. The increasing of the pulses power is achieved by key elements placed in parallel. The experimental and simulation results are presented with the help of graphics and tables. The research is done for different loads, which allow the power pulse source to have wide application in different areas.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129939790","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
Optical wireless multispot diffusing configuration: link quality assessment using statistical approach 光无线多点扩散配置:用统计方法评估链路质量
International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563215
S. Jivkova, Stanislav Shurulinkov, M. Kavehrad
{"title":"Optical wireless multispot diffusing configuration: link quality assessment using statistical approach","authors":"S. Jivkova, Stanislav Shurulinkov, M. Kavehrad","doi":"10.1117/12.563215","DOIUrl":"https://doi.org/10.1117/12.563215","url":null,"abstract":"With proper system design, infrared multi-spot diffusing (MSD) communication links promise an order of magnitude higher bit rates compared to existing radio links. Because of the uniform distribution of the secondary sources (diffusing spots) the channel characteristics and system performance practically do not depend on the particular receiver position with respect to transmitter. However, the amount of received optical signal and noise power depends strongly on the receiver position and orientation with respect to the diffusing spots grid and the ambient light sources. The only way to properly describe such a link is to use a statistical approach. Using this approach, the impact of the optical subsystems on the channel characteristics is investigated and the results prove undoubtedly the great potential of MSD configuration.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128490035","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
Lasers and new trends in laser-tissue interaction 激光和激光与组织相互作用的新趋势
International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563115
A. Serafetinides, D. Papadopoulos
{"title":"Lasers and new trends in laser-tissue interaction","authors":"A. Serafetinides, D. Papadopoulos","doi":"10.1117/12.563115","DOIUrl":"https://doi.org/10.1117/12.563115","url":null,"abstract":"Mid-IR lasers are already used successfully in numerous surgical operations. The Er:YAG and the HF laser, are the main laser sources emitting in the 3.0 μm range of the spectrum, and as this wavelength coincides with the peak of the water and other main soft and hard tissue components absorption curves, it is clear that these lasers would be very useful in numerous medical fields as dentistry, dermatology, angioplasty, ophthalmology etc. Recently, the development of flexible, low loss, able to deliver high power and safe to enter the human body waveguides and fibers for pulsed mid-infrared laser radiation initiated the efforts of the extension of laser surgery in the area of the minimally invasive endoscopy. The laser-induced fluorescence (LIF) is proposed for diagnosis in several pathologies, as in arterial atherosclerosis, in malignancy or for early dental caries detection. LIF is also investigated as a suitable method for monitoring the on line laser surgery interventions.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114937752","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
Opto-acoustic spectroscopy diagnostics of bubble formation in blood during laser TMR 激光TMR过程中血液气泡形成的光声光谱诊断
International Conference on Laser and Laser Information Technologies Pub Date : 2002-04-30 DOI: 10.1117/12.464135
A. Kubyshkin, V. Vasiltsov, V. Panchenko, Ye V. Zelenov
{"title":"Opto-acoustic spectroscopy diagnostics of bubble formation in blood during laser TMR","authors":"A. Kubyshkin, V. Vasiltsov, V. Panchenko, Ye V. Zelenov","doi":"10.1117/12.464135","DOIUrl":"https://doi.org/10.1117/12.464135","url":null,"abstract":"The mechanism of channel punching in the heart muscle (myocardium) by a pulse of high-power CO2 laser was studied. Water, PMMA and biotissue of animals were used as the models. Diagnostics of the punching process was performed by the methods of registration of sound vibrations in the air and back scattering of laser radiation. It has been revealed that at channel punching in various media, sound vibrations are excited in the spectrum region from 1 to 3.5 kHz, which are due to turbulent pulsation of vapor- drop flow ejected from the channel. The spectrum of acoustic vibrations depends on positions of the channel bottom and is sensitive to the boundary between the myocardial tissue and blood. The measurement of sound vibrations spectra can serve as the basis for diagnostics of the process of channel punching in myocardium.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115380960","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
Adaptive laser robot based on serial transport robot and independent manipulator of optics 基于串行运输机器人和光学独立机械手的自适应激光机器人
International Conference on Laser and Laser Information Technologies Pub Date : 2002-04-30 DOI: 10.1117/12.464162
I. Egorov, A. L. Marigin, V. Umnov
{"title":"Adaptive laser robot based on serial transport robot and independent manipulator of optics","authors":"I. Egorov, A. L. Marigin, V. Umnov","doi":"10.1117/12.464162","DOIUrl":"https://doi.org/10.1117/12.464162","url":null,"abstract":"The paper presents the structure and the description of the laser-robot, constructed on the basis of the serial transport robot and kinematics of the independent manipulator, connected to it by independent manipulator of optics. The distributed adaptive control system provides work of the robot in conditions of uncertainty and unstationarity of objects of processing, force-and-moment unloading, cooling of rejecting mirrors and submission of gases in a zone of processing.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123142431","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
Experience in laser stereolithography and its application in manufacturing wind-tunnel aerodynamic models of various purposes 激光立体光刻技术及其在各种风洞气动模型制造中的应用经验
International Conference on Laser and Laser Information Technologies Pub Date : 2002-04-30 DOI: 10.1117/12.464177
Yuri A. Azarov, V. Vermel, A. V. Kornushenko, M. Novikov, S. Kamaev, M. Markov
{"title":"Experience in laser stereolithography and its application in manufacturing wind-tunnel aerodynamic models of various purposes","authors":"Yuri A. Azarov, V. Vermel, A. V. Kornushenko, M. Novikov, S. Kamaev, M. Markov","doi":"10.1117/12.464177","DOIUrl":"https://doi.org/10.1117/12.464177","url":null,"abstract":"In 2000-2001 the specialists of TsAGI and ILIT of the Russian Academy of Sciences developed the photopolymeric molds and tried up the technology of producing in these molds the wing tips of a complicated shape made of composite materials. During further development a complicated hybrid structure of a balance aerodynamic model was generated including primary metallic elements, contour-forming elements made of composites as well as separate contour- forming elements made directly from photopolymer. Prospects for extending this technology to dynamic and elastic models are considered.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122536849","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
Static and fatigue strengths of laser-welded overlap joints with controlled penetration 可控熔透激光焊接重叠接头的静强度和疲劳强度
International Conference on Laser and Laser Information Technologies Pub Date : 2002-04-30 DOI: 10.1117/12.464120
A. Y. Kaitanov, A. Ozersky, A. Zabelin, V. Kislov
{"title":"Static and fatigue strengths of laser-welded overlap joints with controlled penetration","authors":"A. Y. Kaitanov, A. Ozersky, A. Zabelin, V. Kislov","doi":"10.1117/12.464120","DOIUrl":"https://doi.org/10.1117/12.464120","url":null,"abstract":"Static and fatigue strengths of laser welded overlap joints with controlled and full penetrations of 3 mm AISI 304 were investigated. The depth of penetration was controlled by employing certain combinations of laser power and travel speed. Experimental program showed that fatigue and static strengths are dependent on the weld width and independent of the depth of penetration. Larger weld width is attributed to higher static and fatigue strengths. The joints with full penetration possess the same strength characteristics as the samples with controlled penetration.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"4644 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129427742","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: 16
Ion acceleration by cw CO2 laser irradiation in the erosion plume after ablation with excimer laser 准分子激光烧蚀后侵蚀羽流中连续波CO2激光的离子加速
International Conference on Laser and Laser Information Technologies Pub Date : 2002-04-30 DOI: 10.1117/12.464178
O. Novodvorsky, O. Khramova, E. Filippova, R. Sagdeev, C. Wenzel, J. Bartha
{"title":"Ion acceleration by cw CO2 laser irradiation in the erosion plume after ablation with excimer laser","authors":"O. Novodvorsky, O. Khramova, E. Filippova, R. Sagdeev, C. Wenzel, J. Bartha","doi":"10.1117/12.464178","DOIUrl":"https://doi.org/10.1117/12.464178","url":null,"abstract":"The erosion plume resulting from an ablation of tantalum target in vacuum with excimer laser radiation (308 nm) was studied using Langmuir probe. The spatial and temporal dependencies of electron probe currents were obtained in real time. The electron temperature of different plume regions was determined from a series of I-U characteristics taken at different distances between probe and target. It was established that the plume electron temperature is nonuniform and has a maximum value in front of the plume. The acceleration of ions on plume irradiation with CW CO2 laser recorded. The increase in ions energy from 25 to 50 eV was observed.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128953701","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信