Article
Optics
Xiao Zou, Wenkai Li, Shizhen Qu, Kun Liu, Hao Li, Qi Jie Wang, Ying Zhang, Houkun Liang
Summary: The advancement of mid-infrared parametric amplification technique has driven strong-field experiments in science, but low conversion efficiency in MIR wavelength hinders further exploration. An efficient method to double the efficiency of MIR OPCPA system is demonstrated with a flat-top pump profile, showing promise for high energy high power MIR lasers in emerging strong field experiments. This technique could potentially enhance parametric efficiency in other nonlinear conversions and wavelength ranges.
LASER & PHOTONICS REVIEWS
(2021)
Article
Optics
Vladimir Ya Molchanov, Konstantin B. Yushkov, Pavel Kostryukov, Petr B. Gornostaev, Nikolay S. Vorobiev
Summary: This study in the field of ultrafast optics experimentally investigated acousto-optic pulse shaping and found that the sign of the second order dispersion from the acousto-optic dispersion delay line impacts modulation rise/fall time. By comparing different algorithms, the researchers achieved a minimum modulation rise/fall time for 3mJ pulses with linear chirp at 6.2 ps/nm at a wavelength of 795nm.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Physics, Multidisciplinary
Chaojin Zhang, Yu Jiang, Henglei Du, Chengpu Liu
Summary: When a few-cycle laser pulse with non-uniform field propagates in a parabolic quantum well, a soliton pulse can be generated after a certain propagation distance. The duration and peak intensity of this soliton pulse are strongly influenced by the carrier-envelope phase (CEP) of the incident pulse. The CEP-dependence follows a sinusoidal modulation pattern related to the inhomogeneity of the laser field, which allows for determining the CEP by shaping the field's inhomogeneity, similar to using polar media.
Article
Optics
Yasuhiro Miyasaka, Kotaro Kondo, Maki Kishimoto, Michiaki Mori, Masaki Kando, Hiromitsu Kiriyama
Summary: The study developed an optically synchronized highly stable Nd:YAG laser with sub-nanosecond pulse duration and high efficiency. By utilizing multiple techniques, successful green pulse energy conversion was achieved, along with obtaining longer pulse durations.
Article
Optics
Keyang Liu, Yanqi Liu, Yunhai Tang, Junchi Chen, Cheng Wang, Xingyan Liu, Yingbin Long, Yi Xu, Yujie Peng, Xiaoming Lu, Zhengzheng Liu, Yuxin Leng, Xiaobin Wang
Summary: A novel tiled Ti:sapphire amplifier was demonstrated with >1 J amplified chirped pulse output, achieving a maximum peak power of 28 TW and energy conversion efficiency comparable to that of a single Ti:S amplifier. This technique may provide a potential pathway for 100 PW or EW lasers in the future.
CHINESE OPTICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Tong Li, Baogang Quan, Guangyou Fang, Tianwu Wang
Summary: This study proposes an ultra-thin and flexible THz CEP shifter, which can modulate the carrier-envelope phase of THz pulses by changing the array of materials. The shifter has good tolerance and is suitable for applications such as THz-STM, with potential uses including wave focusing and beam steering.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Optics
Zexing Zhao, Hao Chen, Ziming Zhang, Jiatong Li, Fangxiang Zhu, Wei Wan, Fei He, Huifeng Wei, Kangkang Chen, Peiguang Yan
Summary: This paper investigates the generation of high quality cylindrical vector beams (CVBs) in a fiber chirped-pulse amplification laser system. The CVBs obtained have non-uniform state of polarizations and high peak power. The comparison between simulated intensity profiles and measured experimental results confirms the remarkable intensity distribution of the generated CVBs. The proposed configuration of the laser system provides a promising solution for high quality CVBs with high peak power, ultrashort pulse duration, and high mode purity.
CHINESE OPTICS LETTERS
(2022)
Article
Optics
Yicheng Zhou, Zhipeng Qin, Xiabing Zhou, Guoqiang Xie
Summary: This study reports on a grating-free fiber chirped pulse amplifier at 2.8 μm for the first time. The system utilized Er:ZBLAN fiber and Ge rods to generate high-energy picosecond pulses with peak power approximately 1.4 MW. The spectral broadening phenomenon observed in the main amplifier is considered meaningful for practical applications in relevant fields.
HIGH POWER LASER SCIENCE AND ENGINEERING
(2022)
Article
Optics
Takashi Sakamoto, Kosuke Yoshioka
Summary: The chirped pulse amplification of a 1.6 GHz Ti:sapphire femto-second frequency comb was successfully achieved using a GaAs-based tapered semiconductor amplifier. The amplified spectral component reached a peak power of 1.48 kW and an average power of 150 mu W per mode. The competition between amplified spontaneous emission and coherent signal was observed at high driving currents, with a numerical analysis presented to explain the gain suppression. This amplification method is valuable for high repetition rate frequency combs with a wider spectral range.
Article
Multidisciplinary Sciences
Dong Mao, Huaqiang Wang, Heze Zhang, Chao Zeng, Yueqing Du, Zhiwen He, Zhipei Sun, Jianlin Zhao
Summary: By engineering the intracavity group delay, mode-locked solitons at different wavelengths can be synchronized inside the laser cavity. Frequency-resolved measurements fully retrieve the fine temporal structure of pulses, validating the direct generation of synchronized ultrafast lasers from multiple wavelengths.
NATURE COMMUNICATIONS
(2021)
Article
Instruments & Instrumentation
Jingcheng Shang, Shengzhi Zhao, Yizhou Liu, Kejian Yang, Chun Wang, Tao Li, Tianli Feng
Summary: We have successfully achieved the complete separation of Kelly sidebands and main soliton pulse in a fiber chirped pulse amplifier by introducing a spatial filter. The separated Kelly sidebands are demonstrated to exist as independent pulses in the time domain. The power of the Kelly sidebands is amplified in the amplifier, while the main soliton pulse is also amplified and its duration is significantly shortened.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Optics
Mohamed Touil, Said Idlahcen, Rezki Becheker, Denis Lebrun, Claude Roze, Ammar Hideur, Thomas Godin
Summary: This paper introduces a versatile single-shot imaging technique that combines STAMP, AOPDF, and DIH to improve imaging speed and enhance system flexibility. AOPDF allows for flexible adjustment of parameters, while DIH enables reconstruction on a wide depth of field. The system's imaging speed and flexibility are demonstrated by visualizing ultrashort events.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Optics
Renchong Lu, Hao Teng, Jiangfeng Zhu, Yang Yu, Wei Liu, Guoqing Chang, Zhiyi Wei
Summary: The high power fiber amplifier based on nonlinear chirped-pulse amplification (NCPA) successfully manages nonlinearity through pulse shaping and compensation methods, resulting in stable output power and good beam quality.
CHINESE OPTICS LETTERS
(2021)
Article
Multidisciplinary Sciences
Tong Wu, Guanglu Yuan, Zishao Wang, Xiangyu Zhang, Chao Yu, Ruifeng Lu
Summary: In order to achieve current control using intense laser field manipulation, we studied the effect of carrier-envelope phase (CEP) on residual current in SiO2 crystals. By solving semiconductor Bloch equations, we found that CEP can strongly influence the carrier population of the conduction band, providing a simple but useful tool for controlling residual current. The asymmetric distribution in the first Brillouin zone caused by CEP results in non-zero residual current. Furthermore, we investigated the two-color laser scheme and found that asymmetric two-color laser fields can induce the maximum residual current.
Article
Computer Science, Information Systems
Lakshmi Narayanan Venkatasubramani, Aneesh Sobhanan, Anirudh Vijay, R. David Koilpillai, Deepa Venkitesh
Summary: The study explores the use of nonlinear semiconductor optical amplifiers (SOAs) to generate optical phase conjugates for compensating distortions in short distance optical fiber transmission caused by Kerr nonlinearity and chromatic dispersion in coherent multi-carrier lightwave signals. Experimental results demonstrate significant improvement in link budget using SOA-based phase conjugators in a 100 km standard single mode fiber link, showcasing promising bit error rate performance for QPSK and 16QAM coherent OFDM signals. Additional investigation through numerical simulations indicates potential enhancements in link budget with proposed schemes for 16QAM and 64QAM CO-OFDM signals.
Article
Nanoscience & Nanotechnology
Sara Mikaelsson, Jan Vogelsang, Chen Guo, Ivan Sytcevich, Anne-Lise Viotti, Fabian Langer, Yu-Chen Cheng, Saikat Nandi, Wenjie Jin, Anna Olofsson, Robin Weissenbilder, Johan Mauritsson, Anne L'Huillier, Mathieu Gisselbrecht, Cord L. Arnold
Summary: Attosecond pulses, produced through high-order harmonic generation in gases, have been used to observe ultrafast electron dynamics, overcoming limitations of low repetition rates. By using short pulse trains, experiments have been conducted on single-photon double ionization of helium with full angular resolution.
Review
Optics
Ivan Sytcevich, Chen Guo, Sara Mikaelsson, Jan Vogelsang, Anne-Lise Viotti, Benjamin Alonso, Rosa Romero, Paulo T. Guerreiro, Inigo J. Sola, Anne L'Huillier, Helder Crespo, Miguel Miranda, Cord L. Arnold
Summary: The dispersion scan (d-scan) technique is a simple-to-implement method for characterizing ultra-short laser pulses, with intuitive and easy-to-interpret traces and fast, robust retrieval algorithms. This review focuses on the second harmonic generation d-scan technique and compares recent implementations, demonstrating the versatility of the technique.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Optics
Ivan Sytcevich, Anne-Lise Viotti, Chen Guo, Jan Vogelsang, Fabian Langer, Anne L'Huillier, Cord L. Arnold
Summary: This article presents a compact and stable short-wave infrared light source capable of delivering few-cycle pulses with a wavelength of around 2 µm and a repetition rate of 200 kHz, with carrier-envelope phase stability. The potential of the system for driving strong-field experiments is demonstrated through high-order harmonic generation.
Article
Optics
David Busto, Hugo Laurell, Daniel Finkelstein-Shapiro, Christiana Alexandridi, Marcus Isinger, Saikat Nandi, Richard J. Squibb, Margherita Turconi, Shiyang Zhong, Cord L. Arnold, Raimund Feifel, Mathieu Gisselbrecht, Pascal Salieres, Tonu Pullerits, Fernando Martin, Luca Argenti, Anne L'Huillier
Summary: Quantum coherence is crucial in the study of ultrafast dynamics in matter, but in the case of photoionization, entanglement causes decoherence. This study investigates the decoherence resulting from the entanglement of the radial and angular degrees of freedom of the photoelectron. It is shown through experiment and theory that the strong dipole coupling between the 2s2p and 2p(2) states in He leads to entanglement and subsequent loss of coherence in angle-integrated measurements during autoionization.
EUROPEAN PHYSICAL JOURNAL D
(2022)
Article
Optics
Lana Neorici, Christoph Jusko, Sara Mikaelsson, Chen Guo, Miguel Miranda, Shiyang Zhong, Felix Garmirian, Balazs Major, Jeffrey M. Brown, Mette B. Gaarde, Arnaud Couairon, Uwe Morgner, Milutin Kovacev, Cord L. Arnold
Summary: An experimental method is presented for capturing the complete spatiotemporal dynamics of filamenting ultrashort laser pulses and selecting laser pulses with desired parameters.
Article
Optics
Ann-Kathrin Raab, Marcus Seidel, Chen Guo, Ivan Sytcevich, Gunnar Arisholm, Anne L'Huillier, Cord l. Arnold, Anne-Lise Viotti
Summary: This study demonstrates the compression of the output of a 200 kHz, 34 W, 300 fs ytterbium amplifier to 31 fs, achieving a peak power of 2.5 GW with over 88% efficiency. Despite operating 80 times above the critical power for self-focusing in bulk material, the setup maintains excellent preservation of the input beam quality. Extensive characterizations indicate that the compressed pulses have promising applications in high harmonic generation and nonlinear optics in gases or solids.
Article
Multidisciplinary Sciences
Jasper Peschel, David Busto, Marius Plach, Mattias Bertolino, Maria Hoflund, Sylvain Maclot, Jimmy Vinbladh, Hampus Wikmark, Felipe Zapata, Eva Lindroth, Mathieu Gisselbrecht, Jan Marcus Dahlstroem, Anne L'Huillier, Per Eng-Johnsson
Summary: Understanding the ultrafast dynamics of photoionization requires characterizing all underlying ionization channels. In this study, the authors use an interferometry technique based on attosecond pulses to measure the phase and amplitude of individual angular momentum channels in the photoionization of neon.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
L. Neoricic, D. Busto, H. Laurell, R. Weissenbilder, M. Ammitzboell, S. Luo, J. Peschel, H. Wikmark, J. Lahl, S. Maclot, R. J. Squibb, S. Zhong, P. Eng-Johnsson, C. L. Arnold, R. Feifel, M. Gisselbrecht, E. Lindroth, A. L'Huillier
Summary: We studied the resonant two-photon ionization of helium atoms and measured the phase of the photoelectron wavepackets using an attosecond interferometric technique. Experiments were performed with angular and high energy resolution. The results were compared to calculations and an interpretation was given for the observed phase jumps at and away from resonance as well as their dependence on the emission angle.
FRONTIERS IN PHYSICS
(2022)
Article
Physics, Multidisciplinary
K. Veyrinas, M. Plach, J. Peschel, M. Hoflund, F. Catoire, C. Valentin, P. Smorenburg, H. Dacasa, S. Maclot, C. Guo, H. Wikmark, A. Zair, V Strelkov, C. Picot, C. Arnold, P. Eng-Johnsson, A. L'Huillier, E. Mevel, E. Constant
Summary: Attosecond pulses created by high-order harmonic generation in gases often exhibit strong chromatic aberrations. By spatially shaping the fundamental beam, the chromatic aberrations can be reduced, resulting in decreased variation of the XUV spectrum and improved longitudinal sensitivity of the focused attosecond pulses.
NEW JOURNAL OF PHYSICS
(2023)
Article
Optics
Chen Guo, Miguel Miranda, Ann-kathrin Raab, Anne-lise Viotti, Paulo tiago Guerreiro, Rosa Romero, Helder Crespo, Anne L'Huillier, Cord l. Arnold
Summary: We propose a single-shot measurement scheme for the carrier-envelope phase offset of ultrashort laser pulses, which can achieve high-repetition rate. The carrier-envelope phase is evaluated optically through the spectral fringes produced by f-2f nonlinear interferometry. The experimental results show excellent agreement with the simultaneous measurement using a fast line-scan camera.
Review
Physics, Applied
R. Weissenbilder, S. Carlstrom, L. Rego, C. Guo, C. M. Heyl, P. Smorenburg, E. Constant, C. L. Arnold, A. L'Huillier
Summary: This article reviews the physics of high-order harmonic generation (HHG) in gases, focusing on the macroscopic aspects of the nonlinear interaction, and discusses the influence of medium length, pressure, and driving laser intensity on HHG conversion efficiency. Efficient HHG can be achieved over a wide range of pressures and medium lengths if certain hyperbolic equations are met, providing design guidance for future high-flux XUV sources.
NATURE REVIEWS PHYSICS
(2022)
Article
Physics, Multidisciplinary
H. Laurell, D. Finkelstein-Shapiro, C. Dittel, C. Guo, R. Demjaha, M. Ammitzboll, R. Weissenbilder, L. Neoricic, S. Luo, M. Gisselbrecht, C. L. Arnold, A. Buchleitner, T. Pullerits, A. L'Huillier, D. Busto
Summary: We propose a protocol for continuous variable quantum state tomography of electrons resulting from the ionization of atoms or molecules by absorbing extreme ultraviolet light pulses. The protocol is validated through direct calculations of the quantum state of photoelectrons ejected from helium and argon near a Fano resonance. Additionally, ion-photoelectron entanglement due to spin-orbit splitting is distilled, enabling the investigation of quantum coherence and entanglement properties on ultrafast timescales.
PHYSICAL REVIEW RESEARCH
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Robin Weissenbilder, Chen Guo, Cord L. Arnold, Anne L'Huillier
Summary: The study introduces a simple method for selecting an efficient gas target for high-order harmonic generation based on the characteristics of the driving laser, with predictions validated through simulations using the time-dependent Schroding and propagation equations.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Cord L. Arnold, Sara Mikaelsson, Jan Vogelsang, Chen Guo, Ivan Sytcevich, Anne-Lise Viotti, Fabian Langer, Yu-Chen Cheng, Saikat Nandi, Anna Olofsson, Robin Weissenbilder, Johan Mauritsson, Anne L'Huillier, Mathieu Gisselbrecht
Summary: The study introduces a high-repetition rate attosecond light source emitting controlled short trains of attosecond pulses, and applies it to investigate the photoionization of atoms using a 3D photoelectron/ion coincidence spectrometer.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Cord L. Arnold, Sara Mikaelsson, Jan Vogelsang, Chen Guo, Ivan Sytcevich, Anne-Lise Viotti, Fabian Langer, Yu-Chen Cheng, Saikat Nandi, Anna Olofsson, Robin Weissenbilder, Johan Mauritsson, Anne L'Huillier, Mathieu Gisselbrecht
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)
(2021)
