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Laser-induced chemical liquid-phase deposition of copper on transparent substrates 激光诱导铜在透明衬底上的化学液相沉积
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.42
S. Zehnder, P. Schwaller, U. Arx, B. Neuenschwander
{"title":"Laser-induced chemical liquid-phase deposition of copper on transparent substrates","authors":"S. Zehnder, P. Schwaller, U. Arx, B. Neuenschwander","doi":"10.12684/ALT.1.42","DOIUrl":"https://doi.org/10.12684/ALT.1.42","url":null,"abstract":"Laser-induced chemical liquid phase deposition allows maskless manufacturing of metallic structures on the surface of dielectrics and is prospected to be a promising tool in the field of microelectronics and microfluidics. The aim of the work presented here is to combine this deposition method with a related micro-structuring method known as laser-induced backside wet etching. Fabricating both, microstructured surface structures and subsequent deposition of conducting patterns within the same setup would be an interesting tool for rapid prototyping.To demonstrate the functional principle of this combined approach conductive copper lines were deposited at the backside of both polished and structured soda lime glass substrates by using a focused, scanning ns-pulsed Ytterbium fiber laser at 532nm wavelength. The deposition process is initiated by a photo induced reaction of a CuSO4-based liquid precursor in contact with the backside of the substrate. The obtained metallic copper deposits are crystalline, stable under ambient conditions and have a conductivity in the same order of magnitude as bulk copper.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131477809","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: 3
Broadband Superfluorescent Source Based on Bismuth-Doped GeO2-SiO2 Fiber 基于铋掺杂GeO2-SiO2光纤的宽带超荧光光源
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.75
M. Melkumov, K. Riumkin, I. Bufetov, A. V. Shubin, S. Firstov, V. Khopin, A. N. Gurianov, E. Dianov
{"title":"Broadband Superfluorescent Source Based on Bismuth-Doped GeO2-SiO2 Fiber","authors":"M. Melkumov, K. Riumkin, I. Bufetov, A. V. Shubin, S. Firstov, V. Khopin, A. N. Gurianov, E. Dianov","doi":"10.12684/ALT.1.75","DOIUrl":"https://doi.org/10.12684/ALT.1.75","url":null,"abstract":"The first bismuth-doped superfluorescent fibersource operating at 1.44-μm was developed. Atpump power of 200 mW and pump wavelength of1310 nm, its output signal reaches 57 mW withspectrum width of 25 nm.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129318590","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
Observation of Thermocapillary Effect in Gas -Assisted CO2 Laser Cutting of Steel 气体辅助CO2激光切割钢的热毛细效应观察
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.48
A. V. Dubrov, Y. Zavalov, V. D. Dubrov
{"title":"Observation of Thermocapillary Effect in Gas -Assisted CO2 Laser Cutting of Steel","authors":"A. V. Dubrov, Y. Zavalov, V. D. Dubrov","doi":"10.12684/ALT.1.48","DOIUrl":"https://doi.org/10.12684/ALT.1.48","url":null,"abstract":"Investigations of melt’s dynamics have been performed with pyrometer in the gasjet-assisted CO2 laser cutting. Pyrometer consists of 4 sensors and local luminosity of metal melt has been measured precisely on different depth along front of cutting with long dimension resolution about 0.1 mm and with time resolution as short as 0.06 ms. The results of data processing of brightness temperature are reported for laser cutting of mild-steel plate 3 mm, 6 mm and 10 mm thick, that allows obtaining spectra of melt’s surface deformation for different values of cutting velocity and assisted gas pressure. The generation of capillary-wave turbulence following thermo-capillary effect can be observed in the locations, where intensity of radiation of CO2 laser on melt’s surface exceeds 1 MW/cm2. The R-M-S of temperature fluctuations is greater than 10 K in the range of sub-millimeter capillary waves. Thus, an additional mechanism of the anomalous absorption on the front of cutting can compensate the low absorption of the metal in case of 10.6 μm laser in comparison with the absorption of the metal in the near infrared range.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132439012","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
Efficient femtosecond optical parametric amplification and wavelength conversion in silicon waveguides 硅波导中高效飞秒光参量放大和波长转换
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.90
Hongjun Liu, Z. Wang, Juan Wen, N. Huang, Qing-feng Sun
{"title":"Efficient femtosecond optical parametric amplification and wavelength conversion in silicon waveguides","authors":"Hongjun Liu, Z. Wang, Juan Wen, N. Huang, Qing-feng Sun","doi":"10.12684/ALT.1.90","DOIUrl":"https://doi.org/10.12684/ALT.1.90","url":null,"abstract":"Efficient  femtosecond  optical  parametric amplification and  wavelength conversion via four-wave  mixing  (FWM)  in  silicon  waveguides  are demonstrated.  In  the femtosecond  FWM  process, the spectra are greatly broadened, and it is difficult to achieve  efficient  wavelength  conversion  and parametric amplification when the pump and signal pulse widths are close to or less than 100 fs because of the spectral overlap. The spectral overlap can be suppressed  by  tailoring  the  dispersion  profiles of the  silicon  waveguides,  and  separable  spectra  are obtained  for  parametric amplification  with  200  fs pulses. On-chip parametric gain as high as 26.8 dB and idler  conversion  gain  of  25.6  dB  is  achieved with a low pump peak power over a flat bandwidth of 400 nm in a 10-mm-long dispersion engineered silicon waveguide. In addition, the impact of initial chirp  on  the  wavelength  conversion  is also investigated,  and  relative  narrower  FWM  spectra with most of the energy remain in the central peak can be obtained using appropriate initial chirp. The conversion  bandwidth  greater  than  500  nm  with peak  conversion  efficiency of  -1.6  dB  can  be obtained.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"16 16","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120925345","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
Progress in real-time photoacoustic imaging using optical ultrasound detection 利用光学超声检测的实时光声成像研究进展
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.92
R. Nuster, G. Paltauf
{"title":"Progress in real-time photoacoustic imaging using optical ultrasound detection","authors":"R. Nuster, G. Paltauf","doi":"10.12684/ALT.1.92","DOIUrl":"https://doi.org/10.12684/ALT.1.92","url":null,"abstract":"Optical  phase  contrast  full  field  detection  in combination  with  a  CCD-camera  can be  used  to record  acoustic  fields.  This  allows  to  obtain  two-dimensional photoacoustic  projection  images  in real-time. The present work shows an extension of the  technique  towards  full  three-dimensional photoacoustic  tomography.  The reconstruction  of the initial three dimensional pressure distribution is a two step process. First of all, projection images of the initial pressure distribution are acquired. This is done  by  back  propagating  the  observed  wave pattern  in  frequency  space. In  the  second  step  the inverse Radon transform is applied to the obtained projection  dataset  to  reconstruct  the  initial  three dimensional pressure distribution. An experiment is performed  using  a  phantom  sample  which mimics the  properties  of  biological  samples  to  show  the overall applicability of this technique for real-time photoacoustic imaging.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126644683","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
Application of laser texturing method for mc-Si solar cells fabrication 激光变形法在mc-Si太阳能电池制造中的应用
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.53
D. Zuev, O. Novodvorsky, A. Lotin, A. V. Shorokhova, O. Khramova, G. Untila, A. Poroykov, T. Kost, A. Chebotareva
{"title":"Application of laser texturing method for mc-Si solar cells fabrication","authors":"D. Zuev, O. Novodvorsky, A. Lotin, A. V. Shorokhova, O. Khramova, G. Untila, A. Poroykov, T. Kost, A. Chebotareva","doi":"10.12684/ALT.1.53","DOIUrl":"https://doi.org/10.12684/ALT.1.53","url":null,"abstract":"The results of the experiments on the “black” mc-Si surface fabrication by the nanosecond pulses of the YAG laser second harmonic and on application of the introduced laser texturing method for the mc-Si solar cells efficiency improvement are represented. The developed version of laser texturing permits producing a low-reflection mc-Si surface with the reflectance of ~3% in the spectral range of 0.3-1.1 μm. The application of the introduced laser texturing method in mc-Si solar cells fabrication makes it possible to increase the short circuit current density and quantum efficiency.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127050052","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
Microsurgery of Cell Membrane with Femtosecond Laser Pulses for Cell Fusion and Optical Injection 用飞秒激光脉冲进行细胞融合和光注射的细胞膜显微手术
ALT Proceedings Pub Date : 2012-11-01 DOI: 10.12684/ALT.1.61
I. Ilina, O. Chefonov, M. Agranat, Y. Khramova, A. Ovchinnikov, D. Sitnikov, M. Semenova
{"title":"Microsurgery of Cell Membrane with Femtosecond Laser Pulses for Cell Fusion and Optical Injection","authors":"I. Ilina, O. Chefonov, M. Agranat, Y. Khramova, A. Ovchinnikov, D. Sitnikov, M. Semenova","doi":"10.12684/ALT.1.61","DOIUrl":"https://doi.org/10.12684/ALT.1.61","url":null,"abstract":"We report on results of using femtosecond laserscalpel for microsurgery of plasma membrane ofliving cells. Femtosecond laser pulses were appliedto initiate cell fusion as well as to performreversible permeabilization of cell membranerequired for efficient injection of extrinsicsubstances into the target cells. Laser-based cellfusion of mammalian embryo blastomeres as wellas fusion of cell bodies of neurons of molluskLymnaea stagnalis were successfully carried out byapplying single femtosecond laser pulses (secondharmonic of a Cr:Forsterite laser system) 620 nm,100 fs with the fluences of 0.42-0.71 J/cm2. It wasshown that the fusion of cells was completed within5-60 minutes depending on the cell type. Successfulpermeabilization of a cell membrane andoptoinjection of a membrane impermeable dye wasperformed with the help of a compact laser systemfor cell microsurgery DissCell-F (ytterbium laser,1050 nm, 75 MHz, ~115 fs). In both cases the laserirradiation parameters were thoroughly optimized toachieve high viability of treated cells and highefficiency of the procedures of cell fusion andoptical injection.","PeriodicalId":103215,"journal":{"name":"ALT Proceedings","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115050405","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: 4
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