Pub Date : 2002-08-06DOI: 10.1109/EQEC.1996.561626
R. Neubecker, T. Tschudi
Today, spontaneous pattern formation is a phenomenon observed in a wide spectrum of nonlinear optical systems [1,2]. Still, the systematic analysis of such patterns is a problem, because of the lack of general characterization algorithms, allowing a quantitative evaluation of the patterns’s complexity.
{"title":"Analysis Of Optical Pattern Formation By Symmetry Autocorrelation Functions","authors":"R. Neubecker, T. Tschudi","doi":"10.1109/EQEC.1996.561626","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561626","url":null,"abstract":"Today, spontaneous pattern formation is a phenomenon observed in a wide spectrum of nonlinear optical systems [1,2]. Still, the systematic analysis of such patterns is a problem, because of the lack of general characterization algorithms, allowing a quantitative evaluation of the patterns’s complexity.","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74454501","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}
Pub Date : 2002-08-06DOI: 10.1109/EQEC.1996.561908
B. Wellegehausen, K. Mossavi, H. Eichmann, B. Chichkov
When an intense laser is focused into a gas jet, very high-order harmonics can be produced. The harmonics are emitted approximately with the Same efficiency up to orders as high as 143 and to energies as high as 1 XO eV (6 nm). They have the same characteristics as the generating laser: they are collimated, intense, coherent and of short pulse duration. Thus, these phenomena are interesting not only from a basic point-of-view as a probe of the response of an atom to a strong laser field, but also, from a more applied point-of-view, as an interesting soft X-ray source, with specific properties. The radiation can be used in traditional applications in atomic, molecular and solid-state physics, such as lifetime measurements. More “exotic” applications, such as the production of attosecond (subfemtosecond) light pulses, have also been proposed. Both aspects, the understdndillg of the physics of harmonic generation, as well as the applications of this new XUV radiation source will be reviewed. 09:OO JFAP (Invited) Recent Progress of Nonlinear ShortPulee Tunable W V and XUV Generation
当强激光聚焦到气体射流中时，可以产生非常高次的谐波。谐波的发射效率大致相同，最高可达143阶，能量高达1 XO eV (6 nm)。它们具有与产生激光相同的特性:准直、强、相干和短脉冲持续时间。因此，这些现象不仅从作为原子对强激光场响应的探针的基本观点来看是有趣的，而且从更实用的观点来看，作为具有特定性质的有趣的软x射线源。该辐射可用于原子、分子和固态物理的传统应用，例如寿命测量。更“奇特”的应用，如生产阿秒(亚飞秒)光脉冲，也被提出。从两个方面综述了对谐波产生的物理认识，以及这种新型XUV辐射源的应用。[09] JFAP(特邀)非线性短脉冲可调谐微波及XUV发电的最新进展
{"title":"Recent Progress of Nonlinear Short-Pulse Tunable VUV and XUV Generation","authors":"B. Wellegehausen, K. Mossavi, H. Eichmann, B. Chichkov","doi":"10.1109/EQEC.1996.561908","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561908","url":null,"abstract":"When an intense laser is focused into a gas jet, very high-order harmonics can be produced. The harmonics are emitted approximately with the Same efficiency up to orders as high as 143 and to energies as high as 1 XO eV (6 nm). They have the same characteristics as the generating laser: they are collimated, intense, coherent and of short pulse duration. Thus, these phenomena are interesting not only from a basic point-of-view as a probe of the response of an atom to a strong laser field, but also, from a more applied point-of-view, as an interesting soft X-ray source, with specific properties. The radiation can be used in traditional applications in atomic, molecular and solid-state physics, such as lifetime measurements. More “exotic” applications, such as the production of attosecond (subfemtosecond) light pulses, have also been proposed. Both aspects, the understdndillg of the physics of harmonic generation, as well as the applications of this new XUV radiation source will be reviewed. 09:OO JFAP (Invited) Recent Progress of Nonlinear ShortPulee Tunable W V and XUV Generation","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72559382","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}
Pub Date : 2002-08-06DOI: 10.1109/CLEOE.1996.562399
S. Nowak, T. Pfau, J. Mlynck
It is of considerable ttduiologicid iiitrrcst how new proccsscs for nanofabrication can be sed to go Ixyond resolution limits 01 optical litliugraphy. The rcquireincnts for such new tcdinologies arc high resolution, paralld writing m d thc possibility to form aperiodic structures. 111 our apliroadi to atom lithography we USE a rcsist tediiiique to burn pattcriis into a litliograpliic sample, where we make use ai the large internal energy (20 eV) of metastable hcliuin. For this trduiiqiie a tliin (1.5 nzn) self-assembliiig nionolaycr (SAM) of dodccmcthiolate molecules is de ositcd on a gold saniplc, wliidi is then stmcturccl by Augcr-drexcitation of He*-ntoms that hit the layer! This spatially damaged layer s e r w as a rcsist for a wet-dimnical etching process (sce fig.l(a)-(d)). In a first experinleiit we were able to copy a mask into lhc gold layer (SCT figure) and adiicved an edge resolution of less than 80 nni (see fig.l(c)!(f)). The nec~ssary dose for exposure corrcspondcd to one He'-atom per SAM-inoleciile, whidi means in our setup an rxposiirc tiinc of 8 niinutcs. In the next cxpcrinicnt.al step wc r i l l realize a pinhole camera for metastable helium whidi will allow us to produce structure^ in thc order of 30-50 inn by dernagnification of "mcsoscopic" (total sire 200 pm, fcature s i x 10 p i ) objects by a factor of 50-100. The scheme of a pinhole camera hears sevcral advantagcs besides its simple setup, as there me: the absence of any chromatic aberrations and the possibility to form pictura of npcriodic objects.
{"title":"Writing Nanostructures with a Helium Beam","authors":"S. Nowak, T. Pfau, J. Mlynck","doi":"10.1109/CLEOE.1996.562399","DOIUrl":"https://doi.org/10.1109/CLEOE.1996.562399","url":null,"abstract":"It is of considerable ttduiologicid iiitrrcst how new proccsscs for nanofabrication can be sed to go Ixyond resolution limits 01 optical litliugraphy. The rcquireincnts for such new tcdinologies arc high resolution, paralld writing m d thc possibility to form aperiodic structures. 111 our apliroadi to atom lithography we USE a rcsist tediiiique to burn pattcriis into a litliograpliic sample, where we make use ai the large internal energy (20 eV) of metastable hcliuin. For this trduiiqiie a tliin (1.5 nzn) self-assembliiig nionolaycr (SAM) of dodccmcthiolate molecules is de ositcd on a gold saniplc, wliidi is then stmcturccl by Augcr-drexcitation of He*-ntoms that hit the layer! This spatially damaged layer s e r w as a rcsist for a wet-dimnical etching process (sce fig.l(a)-(d)). In a first experinleiit we were able to copy a mask into lhc gold layer (SCT figure) and adiicved an edge resolution of less than 80 nni (see fig.l(c)!(f)). The nec~ssary dose for exposure corrcspondcd to one He'-atom per SAM-inoleciile, whidi means in our setup an rxposiirc tiinc of 8 niinutcs. In the next cxpcrinicnt.al step wc r i l l realize a pinhole camera for metastable helium whidi will allow us to produce structure^ in thc order of 30-50 inn by dernagnification of \"mcsoscopic\" (total sire 200 pm, fcature s i x 10 p i ) objects by a factor of 50-100. The scheme of a pinhole camera hears sevcral advantagcs besides its simple setup, as there me: the absence of any chromatic aberrations and the possibility to form pictura of npcriodic objects.","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89663593","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}
Pub Date : 2002-08-06DOI: 10.1109/CLEOE.1996.562396
U. Drodofsky, M. Drewsen, B. Brezger, G. Schreiber, D. Krogmann, C. Weber, J. Stuhler, T. Pfau, J. MIynsk
Standing laser waves serve as an array of lenses for a well collimated and laser cooled chromium beam. A siljcon substrate put inlo the focal plane of that array can be patterned with lines or dots with a periodicity of half the wavelength of the light [l]. We report on an intenfie beam (at 80 cm from the nomce the 5nx corresponds to an evaporation rate of 0.8 A/E) of chromium We produce up to 300 mW of laser light (425 nm) by frequency doubling a TkSaphire-laser in a KNbO3-crystal. We did systematic studies of Dopplerand Sisyphus-cooling mechanisms in different configurations and can cool the chromium beam transversely down to a few recoil units The m u l l s are in excellent agreement with quantum Monte Carlo simulations. In contrast to mechanically coUimatiiig t h P bea.m we do not loomintenuity in the atomic beam, leading to deposition timea a6 high as 10 nmimin We report on experimentfi o n wr i t ing periodic nanostracturea (see fig. 1) with chromium with standing light fields generated by (.his syfitem. The written structures are characterised with an atomic force microscope. In a fiitilrr t l t ~ p t l i e scheme will be extended to two dimensions and different patterns.
{"title":"Atom Lithography with Chromium","authors":"U. Drodofsky, M. Drewsen, B. Brezger, G. Schreiber, D. Krogmann, C. Weber, J. Stuhler, T. Pfau, J. MIynsk","doi":"10.1109/CLEOE.1996.562396","DOIUrl":"https://doi.org/10.1109/CLEOE.1996.562396","url":null,"abstract":"Standing laser waves serve as an array of lenses for a well collimated and laser cooled chromium beam. A siljcon substrate put inlo the focal plane of that array can be patterned with lines or dots with a periodicity of half the wavelength of the light [l]. We report on an intenfie beam (at 80 cm from the nomce the 5nx corresponds to an evaporation rate of 0.8 A/E) of chromium We produce up to 300 mW of laser light (425 nm) by frequency doubling a TkSaphire-laser in a KNbO3-crystal. We did systematic studies of Dopplerand Sisyphus-cooling mechanisms in different configurations and can cool the chromium beam transversely down to a few recoil units The m u l l s are in excellent agreement with quantum Monte Carlo simulations. In contrast to mechanically coUimatiiig t h P bea.m we do not loomintenuity in the atomic beam, leading to deposition timea a6 high as 10 nmimin We report on experimentfi o n wr i t ing periodic nanostracturea (see fig. 1) with chromium with standing light fields generated by (.his syfitem. The written structures are characterised with an atomic force microscope. In a fiitilrr t l t ~ p t l i e scheme will be extended to two dimensions and different patterns.","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87889198","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}
Pub Date : 2002-08-06DOI: 10.1109/EQEC.1996.561909
M. Protopapas, D. Lappas, C. Keitel, P. Knight
{"title":"The Recollision Picture in High Harmonic Generation","authors":"M. Protopapas, D. Lappas, C. Keitel, P. Knight","doi":"10.1109/EQEC.1996.561909","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561909","url":null,"abstract":"","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81377348","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}
Pub Date : 2002-08-06DOI: 10.1007/978-1-4757-9742-8_222
Y. Prior, I. Averbukh, O. Kinrot
{"title":"Coin - Coherence Observation by Interference Noise","authors":"Y. Prior, I. Averbukh, O. Kinrot","doi":"10.1007/978-1-4757-9742-8_222","DOIUrl":"https://doi.org/10.1007/978-1-4757-9742-8_222","url":null,"abstract":"","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84885060","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}
Pub Date : 2002-08-06DOI: 10.1109/EQEC.1996.561541
A. Muller
Wc i i i l i o d i ~ i x ~ tlir c:nnwp~ or quat~t i i in I)roccssitig loc~isaing on ol)l,i(:al i i t i ~ ) l i ~ i i i i ~ i i t ~ i t i ( i t i . ] l i t rLri' i~urodwl i t i ~ ~ ! ~ ~ ~ ~ r ~ ~ i i i e t r ~ ~ ~ i l I y i ts i i ig I IIV r&itivv IJII:ISC or ~~olarisatioii or siiigle pliot~i i is. As w r ar t ' ilcali~ig wit11 qiiaiitiiiii objwlk wv sec that the ( i i t~ tn t~ im bit (qiibil.)is (~slc~nilcd from the clasiral bit as it can he propared i n a sup~!rposition state of two urtliogoiial prop erties (polarisations lor exaniplc). I < a n h i r~r~rriber generation is also quitc: a riatural for a quantum processor, optics requires a siniplc 50/50 beamsplitter with outputs labellcd
{"title":"Quantum Cryptography Below Lake Geneva","authors":"A. Muller","doi":"10.1109/EQEC.1996.561541","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561541","url":null,"abstract":"Wc i i i l i o d i ~ i x ~ tlir c:nnwp~ or quat~t i i in I)roccssitig loc~isaing on ol)l,i(:al i i t i ~ ) l i ~ i i i i ~ i i t ~ i t i ( i t i . ] l i t rLri' i~urodwl i t i ~ ~ ! ~ ~ ~ ~ r ~ ~ i i i e t r ~ ~ ~ i l I y i ts i i ig I IIV r&itivv IJII:ISC or ~~olarisatioii or siiigle pliot~i i is. As w r ar t ' ilcali~ig wit11 qiiaiitiiiii objwlk wv sec that the ( i i t~ tn t~ im bit (qiibil.)is (~slc~nilcd from the clasiral bit as it can he propared i n a sup~!rposition state of two urtliogoiial prop erties (polarisations lor exaniplc). I < a n h i r~r~rriber generation is also quitc: a riatural for a quantum processor, optics requires a siniplc 50/50 beamsplitter with outputs labellcd","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85005630","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}
Pub Date : 2002-08-06DOI: 10.1109/CLEOE.1996.562549
M. Nisoli, S. De Silvestri, O. Svelto
A well established method for the generation of ultrashort pulses is optical pulse compression, which consists in spectral broadening by self-phase modulation in a single-mode optical fiber followed by chirp compensation into suitable phase dispersive elements. In this way pulses as short as 6 fs have been obtained [1]. The use of single-mode fibers is limited to low energy (nanojoule) pulses due to both material damage and appearance of high-order nonlinearities. So far spectral broadening of high energy femtosecond pulses was achieved in bulk materials [2] where the non-uniform transverse intensity profile of the beam represents a limitation. A compression technique for high energy ultrashort pulses must have a large diameter single mode guiding element with sufficiently high damage threshold and very fast third order non-linear optical susceptibility.
{"title":"High Energy 10 fs Pulses by a New Pulse Compression Technique","authors":"M. Nisoli, S. De Silvestri, O. Svelto","doi":"10.1109/CLEOE.1996.562549","DOIUrl":"https://doi.org/10.1109/CLEOE.1996.562549","url":null,"abstract":"A well established method for the generation of ultrashort pulses is optical pulse compression, which consists in spectral broadening by self-phase modulation in a single-mode optical fiber followed by chirp compensation into suitable phase dispersive elements. In this way pulses as short as 6 fs have been obtained [1]. The use of single-mode fibers is limited to low energy (nanojoule) pulses due to both material damage and appearance of high-order nonlinearities. So far spectral broadening of high energy femtosecond pulses was achieved in bulk materials [2] where the non-uniform transverse intensity profile of the beam represents a limitation. A compression technique for high energy ultrashort pulses must have a large diameter single mode guiding element with sufficiently high damage threshold and very fast third order non-linear optical susceptibility.","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90840597","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}
{"title":"Temporally Resolved Measurement of Electron Densities Above Solid Density","authors":"W. Theobald, R. Habner, C. Wulker, R. Sauerbrey","doi":"10.1109/EQEC.1996.561911","DOIUrl":"https://doi.org/10.1109/EQEC.1996.561911","url":null,"abstract":"Temporally Resolved Measurement of Electron Densities Above Solid Density W.Theobald. R HaOner. C.Wiilker*. and R.Sauerbrey Iii.rIitiitfiir Qprik und Qua~Ite~Ieleklr~iIi&, Friedrich-SchillerUiiiversitdt fena, Max-Wien-I'larr 1. 11-07743 Jeiia, Germauy Phoec:+49-364 1636155, Fax'+49-3G4 1436278, Email: lhccbnld@qc.physik.uni-jena.de, *new addrexs: lrrser Science Group, The Iiislilute of Physical aiid Chemical Research (RIKEh!), Hirosawa 3-1. Wako-shi, Sailamu 351-01, Jupn","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83603760","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}
P. Merz, H. Geiser, G. Huber, V. Sebastian, P. Seelig, V. Then, M. Grieser, R. Grimm, V. Luger, H. Miesner, D. Schwalm, A. Dax, M. Gerlach, T. Kuhl, D. Habs
{"title":"Test of Special Relativity in a Heavy Ion Storage Ring","authors":"P. Merz, H. Geiser, G. Huber, V. Sebastian, P. Seelig, V. Then, M. Grieser, R. Grimm, V. Luger, H. Miesner, D. Schwalm, A. Dax, M. Gerlach, T. Kuhl, D. Habs","doi":"10.1007/BFB0104320","DOIUrl":"https://doi.org/10.1007/BFB0104320","url":null,"abstract":"","PeriodicalId":11780,"journal":{"name":"EQEC'96. 1996 European Quantum Electronic Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81239588","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}
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