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Backscattering-CARS on CVD Diamond CVD金刚石上的后向散射- cars
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cwc3
J. Bühler, Y. Prior
{"title":"Backscattering-CARS on CVD Diamond","authors":"J. Bühler, Y. Prior","doi":"10.1364/cleo_europe.1998.cwc3","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cwc3","url":null,"abstract":"Diamond Growth by Chemical Vapor Deposition has developed in the last years to the point of being commercially used in industrial applications1). Due to the superiority of many of its properties, applications of diamond films can be found in the tool industry (e.g. wear resistant coatings), semiconductor industry (e.g. heat conductive substrates) and optical industry (sturdy optical coatings). The early nucleation stages, however, are still not fully understood.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"239 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80426328","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
Phase Conjugation Based on a Brillouin Liquid at 1.06µm and 2.09µm 基于1.06µm和2.09µm布里渊液体的相位共轭
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cwk2
C. Medrano, I. Biaggio, G. Montemezzani, P. Günter, I. Poberaj
{"title":"Phase Conjugation Based on a Brillouin Liquid at 1.06µm and 2.09µm","authors":"C. Medrano, I. Biaggio, G. Montemezzani, P. Günter, I. Poberaj","doi":"10.1364/cleo_europe.1998.cwk2","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cwk2","url":null,"abstract":"In many lidar applications laser sources capable of producing high energy laser pulses with a diffraction imited wavefront are required. The energy of the pulses is usually increased by adding one or several optical amplifier stages. However the optical amplifiers tend to degrade the wavefront quality to several times the diffraction limit. Phase conjugate mirrors for beam aberration correction have been proposed [1].","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86329872","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
Site Selective Excitation and Upconversion in Er3+:KLiYF5 Er3+:KLiYF5的选择性激发和上转换
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cwf28
Adam Smith, N. Manson, A. J. Silversmith, R. Henderson
{"title":"Site Selective Excitation and Upconversion in Er3+:KLiYF5","authors":"Adam Smith, N. Manson, A. J. Silversmith, R. Henderson","doi":"10.1364/cleo_europe.1998.cwf28","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cwf28","url":null,"abstract":"KLiYF5 is a promising new laser host crystal. Nd3+:KLiYF5 forms the basis of a low threshold infrared laser1, and has also been characterized for its potential as an upconversion laser.2 We have measured the low temperature excitation and emission spectra of a single crystal of 1% Er3+: KLiYF5. The rare earth ions reside in two similar but optically separable sites. The similarity of the centers is obvious because of one to one correlation in the number of spectral lines, similar strengths and polarisations of transitions, and very small shifts in energy (typically less than 10cm1) between corresponding levels. Selective excitation and emission experiments have been performed using a pulsed tunable dye laser in the wavelength range 450nm to 700nm. With a combination of excitation and emission experiments, positions of all levels below 25,000cm-1 have been determined. Lifetimes relevant to the upconversion work have been measured.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"177 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79901338","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
2.8μm emission of Er-doped CaF2 planar waveguides fabricated by molecular beam epitaxy 分子束外延制备掺铒CaF2平面波导的2.8μm发射特性
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cthf7
E. Daran, D. Shepherd, T. Schweizer
{"title":"2.8μm emission of Er-doped CaF2 planar waveguides fabricated by molecular beam epitaxy","authors":"E. Daran, D. Shepherd, T. Schweizer","doi":"10.1364/cleo_europe.1998.cthf7","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cthf7","url":null,"abstract":"The wavelength range near 3μm has many applications in medical processes due to an overlap with the absorption spectrum of water. Emission of the Er3+ ion near 2.8μm, which operates on the transition from 4I11/2 to 4I13/2 is especially promising as it can be pumped by either 800nm GaAlAs or 980nm InGaAlAs diodes, paving the way for a compact device with low electrical energy consumption.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81121756","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
A Fully Automated Diode Laser Based Difference Frequency Spectrometer Tunable from 12-16 μm 全自动二极管激光差频光谱仪，可调范围12-16 μm
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cwc5
R. Putnam, D. Lancaster
{"title":"A Fully Automated Diode Laser Based Difference Frequency Spectrometer Tunable from 12-16 μm","authors":"R. Putnam, D. Lancaster","doi":"10.1364/cleo_europe.1998.cwc5","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cwc5","url":null,"abstract":"The generation of tunable narrow-band light in the mid-infrared region is of considerable interest in pollution monitoring, remote sensing and trace gas detection. Nonlinear difference frequency mixing (DFM) is one of several techniques which allow access to the important 3-20 μm region, where many molecules have fundamental absorptions. Recent advances in single longitudinal mode high-power diode-laser technology, coupled with new developments based on periodic poling of non-linear crystals and improved growth techniques for birefringently phasematched crystals (such as GaSe), has made DFM a promising approach for a compact broadly tunable, narrowband infrared source. A judicious selection of pump laser wavelengths and non-linear crystals will allow most of the mid-infrared spectral region to be accessible by DFM. Our approach involves DFM of two high power single longitudinal mode diode lasers in the non-linear crystal, GaSe. We combine the broad tuning-range of the diode lasers with the extended critical phasematching range of GaSe to produce a widely tunable system with which we have implemented computer controlled diode frequency tuning, automatic crystal angle positioning, and automatic alignment of the pump beams into the crystal.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82690284","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
Optimisation of flared semiconductor lasers and MOPAs 燃烧半导体激光器和mopa的优化
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.ctui37
A. Kent, P. Skovgaard, J. McInerney, J. Moloney, R. Indik, C. Ning
{"title":"Optimisation of flared semiconductor lasers and MOPAs","authors":"A. Kent, P. Skovgaard, J. McInerney, J. Moloney, R. Indik, C. Ning","doi":"10.1364/cleo_europe.1998.ctui37","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.ctui37","url":null,"abstract":"Semiconductor lasers which emit several watts into a single diffraction-limited lobe are extremely promising for a large range of applications such as free-space communication and pumping of fibre lasers and amplifiers. To date the most successful of these have been flared oscillators [1] and master oscillator-power amplifier (MOPA) [2] devices. Both classes of device are limited by filamentation, transverse beam instabilities and. in the case of the MOPA. reflection induced noise.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87356121","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
Inter Configuration Excited-State Absorption of Nd3+-Doped Fluoride Crystals 掺Nd3+氟化物晶体的结构间激发态吸收
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cwf29
S. Guy, Y. Guyot, M. Joubert
{"title":"Inter Configuration Excited-State Absorption of Nd3+-Doped Fluoride Crystals","authors":"S. Guy, Y. Guyot, M. Joubert","doi":"10.1364/cleo_europe.1998.cwf29","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cwf29","url":null,"abstract":"The search for tunable blue-UV solid-state lasers has led to the recognition that 4fn-1 5d to 4P transitions of rare earth ions can potentially be useful for these types of laser systems. Such laser actions has been observed with Ce3+ or Nd3+-doped fluoride crystals. Nevertheless, these lasers suffer from solarization mechanisms which has been found to involve two-photon creation of color centers (via the 4fn →4fn-15d → conduction band pathway). One way to overpass this problem is a stepwise multiphoton excitation of 4fn-15d states with photons of low energy.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73221992","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
The Up-Conversion Processes Efficiency in Diode Pumped Nd:GdLiF4 二极管泵浦Nd:GdLiF4的上转换过程效率
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cwf35
L.C. Courrol, E. P. Maldonado, L. Gomes, N. Vieira, I. Ranieri
{"title":"The Up-Conversion Processes Efficiency in Diode Pumped Nd:GdLiF4","authors":"L.C. Courrol, E. P. Maldonado, L. Gomes, N. Vieira, I. Ranieri","doi":"10.1364/cleo_europe.1998.cwf35","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cwf35","url":null,"abstract":"Intense yellow and green fluorescences are usually observed during high-power diode lasers pumping at a variety of Nd laser media In the GdLiF4:Nd crystals, these anti-Stokes fluorescences resulted mainly from the excited-state absorption of pumping radiation (ESAP) or the energy-transfer up-conversion (ETU) mechanisms.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76967633","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
Response of TOADs to Frequency Detuned Control and Signal Picosecond Pulses TOADs对频率调谐控制和信号皮秒脉冲的响应
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cwf70
J.M. Tang, K. Shore
{"title":"Response of TOADs to Frequency Detuned Control and Signal Picosecond Pulses","authors":"J.M. Tang, K. Shore","doi":"10.1364/cleo_europe.1998.cwf70","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cwf70","url":null,"abstract":"The optical switch known as the Terahertz Optical Asymmetric Demultiplexers (TOADs) is currently attracting a high degree of interest because of several key developments and new applications such as all-optical regenerative memory. However, rather little theoretical analysis of the operating characteristics of TOADs has been undertaken. Recently analysis which took into account the usual gain saturation and ultrafast intraband processes contributing to nonlinear gain compression, showed that threshold energy of TOADs can be decreased to less than 0.1pJ by matching the width of control pulse and switching window [1], and also that switching windows less than 1ps cannot be achieved in practice due to the effect of ultrafast intraband processes [2].","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77595701","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
Diode-pumped continuous-wave optical parametric oscillator 二极管泵浦连续波光学参量振荡器
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cpd1.12
M. Klein, D. Lee, J. Meyn, B. Beier, K. Boller, R. Wallenstein
{"title":"Diode-pumped continuous-wave optical parametric oscillator","authors":"M. Klein, D. Lee, J. Meyn, B. Beier, K. Boller, R. Wallenstein","doi":"10.1364/cleo_europe.1998.cpd1.12","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cpd1.12","url":null,"abstract":"So far, diode-pumped operation of continuous-wave optical parametric oscillators (cw-OPO) has been possible only by resonating two or three of the interacting waves, in order to reduce the threshold to below the available diode pump power. [1,2] We demonstrate a cw-OPO which is directly pumped by a diode-laser and is operated with a cavity which provides low losses only for the signal wave.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80982675","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
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