2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)最新文献_第9页

Complete characterization of supercontinuum coherence properties 超连续相干特性的完整表征

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC) Pub Date : 2011-05-22 DOI: 10.1109/CLEOE.2011.5943485

G. Genty, M. Surakka, J. Turunen, A. Friberg

引用次数: 0

Nonlinear absorption and self-phase modulation in silicon optical fibres 硅光纤中的非线性吸收和自相位调制

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC) Pub Date : 2011-05-22 DOI: 10.1109/CLEOE.2011.5942794

P. Mehta, N. Healy, J. Sparks, T. Day, P. Sazio, J. Badding, A. Peacock

{"title":"Nonlinear absorption and self-phase modulation in silicon optical fibres","authors":"P. Mehta, N. Healy, J. Sparks, T. Day, P. Sazio, J. Badding, A. Peacock","doi":"10.1109/CLEOE.2011.5942794","DOIUrl":"https://doi.org/10.1109/CLEOE.2011.5942794","url":null,"abstract":"Silicon optical fibres are generating much interest as a means to directly integrate semiconductor functionality within the fibre architecture to provide a platform for compact all optical signal processing. For example, the high optical nonlinearity of the core material opens up the potential for these fibres to be used for signal regeneration in very short device lengths. In this paper we characterise the nonlinear optical properties of a step index hydrogenated amorphous silicon (a-Si:H) optical fibre and demonstrate its use for broadband self-phase modulation (SPM). The fibre was fabricated using a high pressure chemical fluid technique [1] to deposit the semiconductor into the central hole of a silica capillary. The resulting fibre had a core diameter of 6µm and a length of 1.5cm, with the linear transmission losses measured to be as low as 1.7dB/cm at 1550nm. As the effective nonlinear interaction length is reduced by the material loss, the realization of low losses is a necessary requirement for the observation of these processes.","PeriodicalId":6331,"journal":{"name":"2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)","volume":"8 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2011-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79602669","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

Coherent spectroscopy of single semiconductor quantum dots 单半导体量子点的相干光谱学

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC) Pub Date : 2011-05-22 DOI: 10.1109/CLEOE.2011.5943411

C. Wolpert, L. Wang, P. Atkinson, A. Rastelli, O. Schmidt, M. Lippitz

{"title":"Coherent spectroscopy of single semiconductor quantum dots","authors":"C. Wolpert, L. Wang, P. Atkinson, A. Rastelli, O. Schmidt, M. Lippitz","doi":"10.1109/CLEOE.2011.5943411","DOIUrl":"https://doi.org/10.1109/CLEOE.2011.5943411","url":null,"abstract":"Semiconductor quantum dots (QDs) are a promising candidate for the realization of qubits for quantum computation [1]. With coherence times of below 1 ns, writing, manipulation and read-out of a qubit requires ultrafast laser pulses interacting coherently with the system [2]. A key experiment in this context is the observation of Rabi oscillations, where the population of a two-level system can be driven coherently back and forth between the ground state and the excited state. The GaAs/AlGaAs material system is favourable for spectroscopy, because the emission energy of the exciton of around 1.7 eV falls into a region where Si-detectors have still a high quantum efficiency. As the GaAs substrate is absorbing at the exciton transition energy, we have to employ a shot-noise limited pump-probe technique operating in reflection geometry. We accomplished to observe Rabi oscillations in one of the fine-structure split ground state excitonic states of our GaAs QDs, monitoring its population by the bleaching it imposes on the second ground state exciton transition (see Fig.1 left). The first period of these population oscillations yields a dipole moment of about 15 D for the s-shell exciton. A second period is still visible, but stretched and shifted to higher pulse areas (see Fig.1). This behavior can be explained by a phenomenological model that takes into account the interaction with hot, delocalized carriers which are excited by the pump pulse in the GaAs substrate.","PeriodicalId":6331,"journal":{"name":"2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)","volume":"34 3 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2011-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79623541","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

Radially-polarized, Q-switched pulses from a side-pumped Nd:YVO4 compact stigmatic bounce laser with a photonic crystal output coupler 带光子晶体输出耦合器的侧面泵浦Nd:YVO4紧凑型柱体弹跳激光器的径向偏振调q脉冲

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC) Pub Date : 2011-05-22 DOI: 10.1109/CLEOE.2011.5942441

T. Omatsu, K. Iwamatsu, S. Chard, A. Minassian, M. Damzen

引用次数: 0

New thin disk laser materials: Yb:ScYLO and Yb:YLF 新型薄盘激光材料:Yb:ScYLO和Yb:YLF

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC) Pub Date : 2011-05-22 DOI: 10.1109/CLEOE.2011.5942505

K. Beil, S. T. Fredrich-Thornton, C. Krãnkel, K. Petermann, D. Parisi, M. Tonelli, G. Huber

{"title":"New thin disk laser materials: Yb:ScYLO and Yb:YLF","authors":"K. Beil, S. T. Fredrich-Thornton, C. Krãnkel, K. Petermann, D. Parisi, M. Tonelli, G. Huber","doi":"10.1109/CLEOE.2011.5942505","DOIUrl":"https://doi.org/10.1109/CLEOE.2011.5942505","url":null,"abstract":"The thin disk laser is a well-established setup for lasers with high output powers in continuous wave as well as in pulsed operation mode [1]. The most common gain material for the thin disk laser is Yb:YAG. In order to obtain even higher output powers an increased thermal conductivity is beneficial. One solution to obtain higher thermal conductivities of the gain material is to substitute the Y-ion with the Lu-ion. We have shown that in such gain materials like Yb:LuAG [2] or Yb:Lu2O3 [3], the thermal conductivity remains high even for high Yb-doping concentrations. Another solution to improve the heat removal is to reduce the thickness of the gain material. To maintain a good absorption in this case, high doping concentrations are necessary. However, it has been shown that efficient laser operation cannot be achieved in Yb:YAG for more than 15% Yb-doping concentration. Also in terms of the achievable pulse duration in modelocked operation, Yb:YAG is not the best choice due to its limited gain bandwidth. For this purpose mixed gain materials like Yb:LuScO3 have been shown to be very suitable [4].","PeriodicalId":6331,"journal":{"name":"2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)","volume":"193 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2011-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79732427","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: 8

Generation of UV laser light via intra-cavity frequency doubling of an AlGaInP-VECSEL 通过AlGaInP-VECSEL的腔内倍频产生紫外激光

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC) Pub Date : 2011-05-22 DOI: 10.1109/CLEOE.2011.5942573

T. Schwarzback, H. Kahle, M. Eichfelder, W. Schulz, R. Rossbach, M. Jetter, P. Michler

引用次数: 0

Spectroscopy of Ho:Lu2O3 with respect to the realization of a visible laser Ho:Lu2O3的光谱学与可见激光的实现

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC) Pub Date : 2011-05-22 DOI: 10.1109/CLEOE.2011.5942437

M. Fechner, F. Reichert, P. Koopmann, K. Petermann, G. Huber

{"title":"Spectroscopy of Ho:Lu2O3 with respect to the realization of a visible laser","authors":"M. Fechner, F. Reichert, P. Koopmann, K. Petermann, G. Huber","doi":"10.1109/CLEOE.2011.5942437","DOIUrl":"https://doi.org/10.1109/CLEOE.2011.5942437","url":null,"abstract":"Recent progress in the development of GaInN laser diodes in the blue region enables solid-state lasers in the visible spectral range without frequency conversion. This was demonstrated to be a highly efficient process in for example praseodymium doped materials [1]. But also the trivalent holmium ion provides absorption lines in the blue spectral region and emission lines around 550 nm. However, so far laser action on this transition has only been realized at low temperatures [2,3]. Since the energy gap between the thermally coupled 5S<inf>2</inf> and 5F<inf>4</inf> manifolds - the initial states of the green emission - and the adjacent 5F<inf>5</inf> level is only about 2700 cm−1, low phonon hosts as for example Lu<inf>2</inf>O<inf>3</inf> (E<inf>eff,phon</inf> = 550 cm−1) are required to minimize non-radiative losses. We report a fundamental spectroscopic research of Ho:Lu<inf>2</inf>O<inf>3</inf> in order to evaluate the laser potential of the green transition. Crystals were grown by the Heat-Exchanger and Nacken-Kyropoulos method and the spectroscopic investigations include temperature dependent lifetime measurements as well as the determination of the ground state absorption, the excited state absorption, and the emission cross sections.","PeriodicalId":6331,"journal":{"name":"2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)","volume":"88 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2011-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83539243","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

Single-Mode regime of large mode area double cladding photonic crystal fibers 大模区双包层光子晶体光纤的单模态

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC) Pub Date : 2011-05-22 DOI: 10.1109/CLEOE.2011.5943198

E. Coscelli, F. Poli, D. Passaro, A. Cucinotta, S. Selleri, T. Alkeskjold, L. Leick, J. Broeng

{"title":"Single-Mode regime of large mode area double cladding photonic crystal fibers","authors":"E. Coscelli, F. Poli, D. Passaro, A. Cucinotta, S. Selleri, T. Alkeskjold, L. Leick, J. Broeng","doi":"10.1109/CLEOE.2011.5943198","DOIUrl":"https://doi.org/10.1109/CLEOE.2011.5943198","url":null,"abstract":"Yb-doped Double Cladding Photonic Crystal Fibers (DC-PCFs) with low numerical aperture have been successfully exploited to realize high-power lasers and amplifiers. Recently, in order to obtain the high effective area values required to avoid detrimental nonlinear effects, PCFs with core obtained by removing 19 cells from the cladding lattice have been proposed. A critical issue dealing with fibers with such large core is the possibility to obtain single-mode guiding, which is a mandatory requirement for most high-power applications. So far, a thorough analysis of the single-mode regime of this kind of fibers has not been presented. The cut-off properties of PCFs with 1-cell or 7-cell core have been studied extensively in literature, for example in [1], by considering the effective index of the Fundamental Space-filling Mode (FSM) as the refractive index of the fiber cladding. As a consequence, cut-off condition has been set where the effective index of the guided mode equals the one of the FSM. It has been shown that the hypothesis of an infinite cladding, which is assumed in this approach, no longer holds when 19-cell core DC PCFs are considered [2].","PeriodicalId":6331,"journal":{"name":"2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)","volume":"8 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2011-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88571067","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

Quantum cascade ring lasers: Unidirectional operation and coupled ring tuning 量子级联环形激光器:单向操作和耦合环形调谐

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC) Pub Date : 2011-05-22 DOI: 10.1109/CLEOE.2011.5942564

C. Nshii, C. Ironside, M. Sorel, T. Slight, S.Y. Zhang, D. Revin, J. Cockburn

引用次数: 1

Polarisation-resolved real-time series of the dynamics of a 1550 nm-VCSEL under orthogonal optical injection 正交光注入下1550 nm vcsel偏振分辨动态的实时序列

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC) Pub Date : 2011-05-22 DOI: 10.1109/CLEOE.2011.5942635

K. Schires, A. Hurtado, I. Henning, M. Adams

引用次数: 0