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Photonics
Special Issues
Ultrafast Pulse Shaping Techniques: From Temporal to Spatiotemporal Control
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Ultrafast Pulse Shaping Techniques: From Temporal to Spatiotemporal Control

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Lasers, Light Sources and Sensors".

Deadline for manuscript submissions: 30 July 2025 | Viewed by 3219

Special Issue Editors

Dr. Wei Chen

E-Mail Website
Guest Editor
National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
Interests: nonlinear optics; nano-optics; ultrafast optics
Dr. Jintao Fan

E-Mail Website
Guest Editor
Ultrafast Laser Laboratory, Key Laboratory of Opto-electronic Information Technical Science of Ministry of Education, School of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
Interests: nonlinear optics; ultrafast laser; structure beam
Dr. Lingling Ma

E-Mail Website
Guest Editor
National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
Interests: liquid crystal superstructures; soft-mater photonics; liquid crystal devices

Special Issue Information

Dear Colleagues,

In the progress of photonics and optoelectronics, ultrafast pulse shaping has surfaced as a pivotal technology. Operating on femtosecond to picosecond timescales, this technology recently extended beyond temporally shaping to incorporate spatial modes, leading to structured light pulses and even more complex spatiotemporal beams. Such groundbreaking advancements have ushered in new explorative avenues in both classical and quantum optics, demonstrating potential in super-resolution imaging, nanofabrication, and quantum information processing. A diverse array of strategies is employed for ultrafast pulse control in the linear optics region. Among these, liquid crystal devices have shown significant promise due to their flexibility and tunability. Other notable methods include metamaterials, passive fibers, grating pairs, digital micromirror devices, etc. Additionally, ultrafast pulses can be controlled via intra-cavity nonlinear dynamics in lasers and microresonators or by using extra-cavity nonlinear devices.

In this Special Issue, "Ultrafast Pulse Shaping Techniques: From Temporal to Spatiotemporal Control", we invite contributions that underscore the recent advancements and innovative applications in this rapidly evolving field. We welcome theoretical, numerical, and experimental studies, including (but not limited to):

  • Novel techniques for shaping ultrafast pulse in temporal, spatial, and spatiotemporal domains with the use of liquid crystal and other devices;
  • Novel effects and techniques in frequency conversion;
  • Ultrafast pulse characterization methods;
  • Ultrafast light–matter interactions;
  • Applications of ultrafast pulse shaping in super-resolution imaging, nanofabrication, quantum information processing, material science, and optical communications;
  • Biomedical applications that leverage ultrafast pulse shaping;
  • Exploration of ultrafast phenomena enabled by advanced pulse shaping;
  • Pulse shaping in nonlinear optics and spectroscopy;
  • Challenges and solutions in the development and application of advanced pulse shaping techniques.

Dr. Wei Chen
Dr. Jintao Fan
Dr. Lingling Ma
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • ultrafast pulse shaping
  • structured light
  • liquid crystals
  • spatiotemporal optical fields
  • super-resolution imaging
  • nanofabrication
  • quantum information processing
  • nonlinear optics

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Published Papers (3 papers)

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Research

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9 pages, 1687 KiB  
Article
Spatio-Temporal Dynamics of Pulses in Multimode Fibers
by Yuval Tamir, Sara Meir, Hamootal Duadi and Moti Fridman
Photonics 2024, 11(7), 591; https://doi.org/10.3390/photonics11070591 - 25 Jun 2024
Viewed by 1122
Abstract
Time lenses can measure ultrafast signals but are based on single-mode fibers (SMFs). To develop multimode time lenses that are based on a four-wave mixing process, we must have full control of the nonlinear interaction between the modes. Specifically, we need to generate [...] Read more.
Time lenses can measure ultrafast signals but are based on single-mode fibers (SMFs). To develop multimode time lenses that are based on a four-wave mixing process, we must have full control of the nonlinear interaction between the modes. Specifically, we need to generate an idler from each mode without any cross-talk between the modes. Here, as a first step toward a multimode time lens, we study how stable a short pulse is traveling in a multimode fiber, and how pulses at different modes interact with each other. We utilize a single-mode-based time lens to measure the dynamics of these pulses in the time and spectral domains. We found that there is cross-talk between the modes and that the pulses are not stable and excite other modes, rather than staying in the same modal order. These findings indicate that developing a multimode time-lens may be more challenging than expected. Full article
(This article belongs to the Special Issue Ultrafast Pulse Shaping Techniques: From Temporal to Spatiotemporal Control)
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Review

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21 pages, 15250 KiB  
Review
Plasmonic Vortices: A Promising Tool Utilizing Plasmonic Orbital Angular Momentum
by Zhi Gao, Dmitri V. Voronine and Alexei V. Sokolov
Photonics 2025, 12(2), 125; https://doi.org/10.3390/photonics12020125 - 31 Jan 2025
Viewed by 361
Abstract
An optical vortex (OV) beam is an important type of spatially structured beam. However, the diffraction limit for light with orbital angular momentum (OAM) remains a challenge for certain applications. Surface plasmon polaritons (SPPs) can confine light to nanoscale dimensions and enhance light–matter [...] Read more.
An optical vortex (OV) beam is an important type of spatially structured beam. However, the diffraction limit for light with orbital angular momentum (OAM) remains a challenge for certain applications. Surface plasmon polaritons (SPPs) can confine light to nanoscale dimensions and enhance light–matter interactions. Over the past two decades, researchers have begun to explore the imparting of OAM onto SPPs to generate plasmonic vortices (PVs). Since the discovery of PVs, significant efforts have been made in this field, leading to considerable progress. This article reviews these studies in three key areas: (a) the generation and manipulation of PVs, (b) the characterization of PVs, and (c) the application of PVs. We believe that PVs represent a promising tool utilizing plasmonic OAM for both fundamental research and practical applications and hold great potential for the future with continued dedicated efforts. Full article
(This article belongs to the Special Issue Ultrafast Pulse Shaping Techniques: From Temporal to Spatiotemporal Control)
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19 pages, 2562 KiB  
Review
Review on Principal and Applications of Temporal and Spatial Beam Shaping for Ultrafast Pulsed Laser
by Jong Hyun Kim and Hae Woon Choi
Photonics 2024, 11(12), 1140; https://doi.org/10.3390/photonics11121140 - 4 Dec 2024
Viewed by 1140
Abstract
Ultrafast or ultrashort pulsed lasers have become integral in numerous industrial applications due to their high precision, non-thermal interaction with materials, and ability to induce nonlinear absorption. These characteristics have expanded their use in microfabrication, semiconductor processing, automotive engineering, and biomedical fields. Temporal [...] Read more.
Ultrafast or ultrashort pulsed lasers have become integral in numerous industrial applications due to their high precision, non-thermal interaction with materials, and ability to induce nonlinear absorption. These characteristics have expanded their use in microfabrication, semiconductor processing, automotive engineering, and biomedical fields. Temporal pulse shaping reduces laser pulse durations, often to shorter timescales than many physical and chemical processes, enabling greater control. Meanwhile, spatial shaping improves efficiency and precision in micro- and nanofabrication and biomedical applications. Advances in optical parametric amplifiers (OPAs) and chirped-pulse amplifiers (CPAs) have allowed for more refined temporal and spatial shaping, ensuring the preservation of high peak power while achieving ultrashort pulse durations. Additionally, spatial light modulators (SLMs) have facilitated sophisticated beam shaping, which, when combined with ultrafast lasers, supports applications like computer-generated holography and nanoscale fabrication. These developments underscore the growing utility and versatility of ultrafast lasers in both research and industrial contexts. Full article
(This article belongs to the Special Issue Ultrafast Pulse Shaping Techniques: From Temporal to Spatiotemporal Control)
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