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Bright Phase-Stable Waveforms Covering the Entire Infrared Molecular Fingerprint Region 覆盖整个红外分子指纹区的明亮相位稳定波形
Pub Date : 2023-06-26 DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10232593
Hadil Kassab, Sebastian Gröbmeyer, C. Hofer, W. Schweinberger, Philipp Steinleitner, M. Högner, Tatiana Amotchkina, M. Knorr, Rupert Huber, F. Krausz, N. Karpowicz, I. Pupeza
The recent availability of modelocked-laser architectures emitting MHz-repetition-rate trains of near-infrared (NIR) pulses with multi-W average powers and 10-fs-scale durations has opened up new vistas for spectroscopy in the mid-infrared (MIR) spectral range. Parametric downconversion processes driven by these femtosecond lasers in suitable nonlinear media, in particular intrapulse difference-frequency generation (IPDFG), afford combinations of the desirable properties of MIR sources: broad spectral coverage, high brilliance, and spatial and temporal coherence. Yet, unifying these in a robust and compact radiation source has remained a challenge. Here, we address this challenge by means of IPDFG in a multi-crystal in-line geometry, driven by the powerful, 10.6-fs pulses of a 10.6-MHz-repetition-rate, nonlinearly post-compressed Yb: YAG thin-disk oscillator [1], [2].
最近可用的模型锁定激光器结构发射具有多w平均功率和10 fs尺度持续时间的mhz重复率近红外(NIR)脉冲序列,为中红外(MIR)光谱范围的光谱学开辟了新的前景。由这些飞秒激光器在合适的非线性介质中驱动的参数下转换过程,特别是脉冲内差频产生(IPDFG),提供了MIR源所需特性的组合:广谱覆盖、高亮度、空间和时间相干性。然而,在一个强大而紧凑的辐射源中统一这些仍然是一个挑战。在这里,我们通过在多晶体直线几何结构中使用IPDFG来解决这一挑战,该结构由10.6 mhz重复率、非线性后压缩Yb: YAG薄盘振荡器[1],[2]的强大10.6 fs脉冲驱动。
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引用次数: 0
Far-Field Petahertz Sampling of Plasmonic Fields 等离子体场的远场千赫兹采样
Pub Date : 2023-06-26 DOI: 10.1109/cleo/europe-eqec57999.2023.10232637
Kai-Fu Wong, Weiwei Li, Zilong Wang, Vincent Wanie, Erik P Månsson, Dominik Höing, Johannes Blochl, Thomas Nubbemeyer, A. Trabattoni, Holger Lange, Francesca Calegari, Matthias F. Kling
Plasmon excitation in nanosystems allows for extreme light confinement beyond the diffraction limit, therefore enabling a number of new applications in photonics, energy harvesting and biology. In this context, it is key to obtain a realtime characterization of the onset from the plasmonic field and its ultrafast dephasing dynamics.
纳米系统中的等离子激元激发允许超越衍射极限的极端光约束,从而使光子学,能量收集和生物学中的许多新应用成为可能。在这种情况下,获得等离子体场起始的实时表征及其超快消相动力学是关键。
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引用次数: 0
Heterogeneous Terahertz Quantum Cascade Laser for Ultra-Broadband Emission 用于超宽带发射的非均匀太赫兹量子级联激光器
Pub Date : 2023-06-26 DOI: 10.1109/cleo/europe-eqec57999.2023.10231357
M. Jaidl, M. Beiser, M. Giparakis, M. Kainz, D. Theiner, B. Limbacher, M. Ertl, A. M. Andrews, G. Strasser, J. Darmo, K. Unterrainer
Broadband emission in the terahertz spectral region is a prerequisite for applications such as spectroscopy or white light sources. Terahertz quantum cascade lasers provide high output powers combined with a compact design in this frequency range. Since the emission wavelength can be tailored by bandstructure engineering in these devices, multiple active region designs emitting at different wavelengths can be combined in a single structure [1]. The formation of frequency combs also benefits from a broadband gain profile through the connected frequency dependent dispersion [2]. Here, we present a heterogeneous terahertz quantum cascade laser consisting of five individual active regions (ABCDE). The devices lase in pulsed and continuous-wave operation and emit in a spectral range from 1.9-4.5 THz, covering a bandwidth of 1.37 octaves [3].
太赫兹光谱区域的宽带发射是光谱学或白光源等应用的先决条件。太赫兹量子级联激光器在这个频率范围内提供高输出功率和紧凑的设计。由于这些器件可以通过带结构工程定制发射波长,因此可以将发射不同波长的多个有源区域设计组合在一个结构中[1]。频率梳的形成也受益于通过连接的频率相关色散获得的宽带增益曲线[2]。在这里,我们提出了一个由五个单独的活跃区域(ABCDE)组成的异质太赫兹量子级联激光器。该器件以脉冲和连续波工作方式发射激光,发射光谱范围为1.9-4.5太赫兹,带宽为1.37倍频[3]。
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引用次数: 0
Guided Brillouin Interactions - from Optical Vortex Isolators to Extreme Thermodynamics 引导布里渊相互作用-从光学涡旋隔离器到极端热力学
Pub Date : 2023-06-26 DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10232221
B. Stiller
Brillouin-Mandelstam scattering is the strongest optomechanical effect in waveguides and optical fibers. It gives access to the domain of acoustic waves which follow other guiding rules and are sensitive to different parameters of the material such as pressure or temperature. This opens the opportunity to - on the one hand - modulate and process optical signals via mechanical vibrations which can be shaped by the design and material of the optoacoustic waveguides and - on the other hand - gain an insight into material properties and environmental changes. In this talk, experimental results on two topics will be presented.
布里渊-曼德尔施塔姆散射是波导和光纤中最强烈的光力学效应。它可以进入遵循其他指导规则的声波域,并且对材料的不同参数(如压力或温度)敏感。这开启了一个机会,一方面,通过机械振动来调制和处理光信号,这可以由光声波导的设计和材料来塑造,另一方面,获得对材料特性和环境变化的洞察。在这次演讲中,我们将介绍两个主题的实验结果。
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引用次数: 0
Field Demonstration of Multi-Wavelength Optical Transmission with Microresonator Frequency Combs 微谐振器频率梳多波长光传输的现场演示
Pub Date : 2023-06-26 DOI: 10.1109/cleo/europe-eqec57999.2023.10231408
Koya Tanikawa, S. Fujii, Soma Kogure, Shuya Tanaka, Shun Tasaka, Koshiro Wada, Hajime Kumazaki, Satoki Kawanishi, Takasumi Tanabe
Data traffic has been increasing with the spread of the internet. Therefore, a network that connects data centers and metropolitan areas requires a high-capacity, low-latency, and low-power-consumption optical communication system [1]. Since microresonator-based optical frequency combs (i.e., microcombs) have many longitudinal modes, they are expected to be applied to wavelength division multiplexing (WDM) communications [2], [3]. We describe a field demonstration of a multi-wavelength optical transmission with a soliton microcomb. We employed intensity modulation and direct detection (IM-DD) for a simple and low-latency communication system [3]. We also used a magnesium fluoride (MgF2) microresonator because it has a small free spectral range (FSR) for efficient bandwidth use. Although sophisticated experiments have already been reported in the laboratory, we believe that our demonstration using a commercially installed optical fiber in a metropolitan area is a significant step towards the practical use of a microresonator system.
随着互联网的普及,数据流量也在不断增加。因此,连接数据中心和城域网的网络需要高容量、低时延、低功耗的光通信系统[1]。由于基于微谐振器的光频梳(即微梳)具有许多纵向模式,因此有望应用于波分复用(WDM)通信中[2],[3]。本文描述了用孤子微梳进行多波长光传输的现场演示。我们采用强度调制和直接检测(IM-DD)来实现简单、低延迟的通信系统[3]。我们还使用了氟化镁(MgF2)微谐振器,因为它具有小的自由光谱范围(FSR),可以有效地利用带宽。尽管在实验室中已经报道了复杂的实验,但我们相信,我们在大都市地区使用商业安装的光纤的演示是迈向实际使用微谐振器系统的重要一步。
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引用次数: 0
Liquid Crystals Meet Strong-Field Physics: First Attempts of HHG in Soft Matter 液晶与强场物理相遇:软物质中HHG的首次尝试
Pub Date : 2023-06-26 DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10232400
Luise Becker, Andrea Annunziata, Patrick Friebel, D. Faccialà, C. Vozzi, Laura Cattaneo
We present preliminary results of HHG spectroscopy in 8CB smectic A liquid crystal under different geometries and temperature, using a single colour pumping scheme in the mid-IR wavelength with subsequent detection in the NIR-visible range.
本文介绍了在不同几何形状和温度下8CB近晶A液晶的HHG光谱的初步结果,在中红外波长使用单色泵浦方案,随后在近红外可见范围内进行检测。
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引用次数: 0
Impulsive X-Ray Raman in Liquid Water 液态水中的脉冲x射线拉曼
Pub Date : 2023-06-26 DOI: 10.1109/cleo/europe-eqec57999.2023.10232835
Oliver Alexander, Felix Egun, D. Garratt, Laura Rego, J. Cryan, Taran Driver, J. P. Marangos
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引用次数: 0
Design and Characterization of Thulium-Doped Fiber with Depressed Cladding for Amplifiers Operating in the Region from L-Band to 1.8 µm l波段至1.8µm区域放大器中带抑制包层掺铥光纤的设计与表征
Pub Date : 2023-06-26 DOI: 10.1109/cleo/europe-eqec57999.2023.10231388
J. Aubrecht, Jan Pokorný, M. Kamrádek, B. Jirícková, P. Peterka
The current demands on optical communications are running up against their physical limits with the exponential increase in the volume of data transmitted over the Internet [1]. The increasing capacity requirements of optical transmission paths support the use of fiber amplifiers outside the standard spectral bands. For these purposes, existing aluminosilicate fibers can be used, which, unlike anti-resonant hollow-core fibers or hollow-core photonic crystal fibers, are more accessible in terms of manufacture as well as cost.
随着互联网上传输的数据量呈指数级增长,目前对光通信的需求已经达到了其物理极限[1]。光传输路径的容量需求不断增加,支持在标准光谱带之外使用光纤放大器。为了这些目的,现有的铝硅酸盐纤维可以使用,它不像抗谐振空心芯光纤或空心光子晶体光纤,在制造和成本方面更容易获得。
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引用次数: 0
Isolated Attosecond Pulse Generation Driven by Spatio-Temporal Pulse Reshaping in a Semi-infinite Gas Cell 半无限气室中由时空脉冲整形驱动的隔离阿秒脉冲产生
Pub Date : 2023-06-26 DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10232065
F. Vismarra, D. Mocci, L. Colaizzi, M. F. Galán, V. W. Segundo, R. Boyero-García, J. Serrano, E. Jarque, M. Pini, L. Mai, Y. Wu, M. Reduzzi, M. Lucchini, H. J. Wörner, C. Arnold, J. S. Román, C. Hernández-García, M. Nisoli, R. Borrego-Varillas
High-order harmonic generation (HHG) is an ubiquitous tool of great interest in many fields of research from imaging to ultrafast spectroscopy [1]. In its most common implementation, an intense $(approx 10^{14} mathrm{W}/text{cm}^{2})$ infrared (IR) pulse is focused on a noble gas target yielding a train of attosecond pulses in the extreme ultraviolet (XUV) spectral region. By adopting proper strategies and target geometries, it is possible to isolate an attosecond pulse out of the train. In this work, we demonstrate the generation of isolated attosecond pulses by spatio-temporal reshaping of few-cycle IR driving pulses in a semi-infinite gas cell. We combine numerical simulations and experiments to investigate the interplay between the spatio-temporal reshaping of the driving field, the generation of harmonics and the isolation of an attosecond pulse.
高次谐波产生(HHG)是一种普遍存在的工具,从成像到超快光谱等许多研究领域都有很大的兴趣。在其最常见的实现中,一个强烈的$( 约10^{14} math {W}/text{cm}^{2})$红外(IR)脉冲聚焦在稀有气体目标上,在极紫外(XUV)光谱区域产生一系列阿秒脉冲。通过采用适当的策略和目标几何形状,可以将阿秒脉冲从列车中隔离出来。在这项工作中,我们展示了通过在半无限气体电池中对少周期红外驱动脉冲进行时空重塑来产生孤立阿秒脉冲。我们结合数值模拟和实验研究了驱动场的时空重塑、谐波的产生和阿秒脉冲的隔离之间的相互作用。
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引用次数: 0
Ultrabroadband Single-Shot Waveform Detection of Air-Plasma Based THz Sources 基于空气等离子体的太赫兹源的超宽带单次波形检测
Pub Date : 2023-06-26 DOI: 10.1109/CLEO/Europe-EQEC57999.2023.10232086
A. Ohrt, Siyan Zhou, Yunhong Ding, P. Jepsen, Binbin Zhou
Air-plasma based THz sources combined with the air/solid-state biased coherent detection (ABCD/SSBCD) scheme can provide ultrabroad bandwidth and enable THz spectroscopy across the entire THz regime. Static THz time-domain spectroscopy (TDS) applications utilizing the broadband nature of this technology are abundant, and there has also been strong interest in applying air photonics for transient THz spectroscopy (TRTS). For instance, probing photocarrier dynamics in photovoltaic thin films [1]. A full two-dimensional pump-probe TRTS measurement is normally very time consuming due to the serial nature of data acquisition in THz-TDS. To overcome this issue, single-shot THz waveform detection techniques that capture a full THz waveform on a multi-element detector with a single or few probe pulses have been intensively investigated [2]. To date, most of the reported single-shot THz detection schemes are based on EO sampling and support detection bandwidth only up to a few THz. Here we present the first two-color air-plasma based single-shot THz waveform detection with detected bandwidth up to at least 12 THz.
基于空气等离子体的太赫兹源与空气/固态偏置相干探测(ABCD/SSBCD)方案相结合,可以提供超远带宽,并实现整个太赫兹波段的太赫兹光谱。静态太赫兹时域光谱(TDS)利用该技术的宽带特性的应用是丰富的,并且也有强烈的兴趣将空气光子学应用于瞬态太赫兹光谱(TRTS)。例如,探测光伏薄膜中的光载流子动力学[1]。由于在太赫兹- tds中数据采集的串行性质,一个完整的二维泵浦探针TRTS测量通常非常耗时。为了克服这一问题,人们对单次太赫兹波形检测技术进行了深入研究,该技术可以在多元件探测器上用单个或几个探测脉冲捕获完整的太赫兹波形[2]。迄今为止,大多数报道的单次太赫兹探测方案都是基于EO采样,并且只支持几个太赫兹的探测带宽。在这里,我们提出了第一个基于双色空气等离子体的单次太赫兹波形检测,检测带宽至少可达12太赫兹。
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引用次数: 0
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Oceans
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