Recent Progress in Ultrafast Laser

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

Deadline for manuscript submissions: closed (30 June 2024) | Viewed by 2149

Special Issue Editors

Space photoelectric Technology Institute, Changchun University of Science and Technology, Changchun 130022, China
Interests: mode-locked fiber lasers; nonlinear fiber optics; all-optical processing; free-space optical communication; micro photonics device
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Guest Editor
College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, China
Interests: nonlinear fiber optics; optical solitons; optical signal processing; optics communications; mode-locked fiber lasers; vector soliton fiber laser; all optical regeneration

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Guest Editor
College of Physics, Hebei Key Laboratory of Photophysics Research and Application, Hebei Normal University, Shijiazhuang 050024, China
Interests: ultrafast fiber lasers; spatiotemporal mode locking; Mamyshev oscillator; fiber optics components; wavelength filtering devices; nonlinear optics; optical solitons

Special Issue Information

Dear Colleagues,

Recent progress in ultrafast lasers has greatly improved the accuracy and effectiveness of precision machining, measurement and other industrial technologies. It has also extended to emergent fields such as optical frequency comb and attosecond optics. To further boost the impact of this exciting and rapidly evolving field, the Guest Editors encourage the submission of new contributions with novel results and research solutions for a new Special Issue entitled “Recent Progress in Ultrafast Laser”. Topics of interest for this Special Issue include, but are not limited to, the following:

  • Ultrafast lasers and applications;
  • Mode-locked lasers;
  • Optical solitons;
  • High-energy ultrashort pulse generation and amplification;
  • Nonlinear optics;
  • Ultrafast photonic devices;
  • Attosecond optics;
  • Optical signal processing;
  • Ultrafast phenomenon and dynamics.

Dr. Wanzhuo Ma
Dr. Yufeng Song
Dr. Xingliang Li
Guest Editors

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Keywords

  • lasers
  • ultrashort pulse
  • mode-locked laser
  • soliton
  • nonlinear optics
  • photonics

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Published Papers (2 papers)

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Research

8 pages, 2775 KiB  
Communication
Four-Fold, Cross-Phase Modulation Driven UV Pulse Compression in a Thin Bulk Medium
by Peter Susnjar, Alexander Demidovich, Gabor Kurdi, Paolo Cinquegrana, Ivaylo Nikolov, Paolo Sigalotti and Miltcho B. Danailov
Photonics 2024, 11(6), 520; https://doi.org/10.3390/photonics11060520 - 28 May 2024
Viewed by 537
Abstract
Generation of high energy few-fs pulses in the ultraviolet (UV) still represents challenges due to compression and phase control difficulties in this spectral range. Presented here is a pulse compression approach utilizing cross-phase modulation within a thin solid-state medium induced by a strong, [...] Read more.
Generation of high energy few-fs pulses in the ultraviolet (UV) still represents challenges due to compression and phase control difficulties in this spectral range. Presented here is a pulse compression approach utilizing cross-phase modulation within a thin solid-state medium induced by a strong, spatially and temporally controllable near-infrared (NIR) pulse acting on a weaker, 400 nm UV pulse. Through this method, four-fold compression is attained within a single fused silica plate, resulting in a 13 fs UV pulse with preserved beam quality. With some further technical adjustments, this method’s applicability could be extended to deep or even vacuum UV, where direct compression is difficult. Full article
(This article belongs to the Special Issue Recent Progress in Ultrafast Laser)
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11 pages, 2857 KiB  
Article
Generation and Dynamics of Multiple Pulses in an Ultrafast Fiber Laser with a Single-Mode Fiber–Graded-Index Multimode Fiber–Single-Mode Fiber-Based Saturable Absorber
by Yatao Yang, Qiong Zeng, Yanzhao Yang, Geguo Du, Jianhua Ji, Yufeng Song, Zhenhong Wang and Ke Wang
Photonics 2024, 11(1), 52; https://doi.org/10.3390/photonics11010052 - 4 Jan 2024
Viewed by 1200
Abstract
In this study, we have investigated the evolution process and dynamic characteristics of a multi-pulse regime in an erbium-doped fiber ring laser based on a single-mode fiber–graded-index multimode fiber–single-mode fiber (SMF-GIMF-SMF) structure as an optical modulator. By utilizing the excellent nonlinear optical absorption [...] Read more.
In this study, we have investigated the evolution process and dynamic characteristics of a multi-pulse regime in an erbium-doped fiber ring laser based on a single-mode fiber–graded-index multimode fiber–single-mode fiber (SMF-GIMF-SMF) structure as an optical modulator. By utilizing the excellent nonlinear optical absorption of the SMF-GIMF-SMF (SMS) device with a modulation depth of ~8.68%, stable single-pulse mode locking at the frequency of 9.84 MHz can be readily observed at low pump power. In addition, the single-pulse operation can evolve into a multiple-pulse regime on account of the peak-power-clamping effect via suitably raising the pump power and carefully regulating the polarization state. Further, the single-shot temporal evolution of multiple pulses is monitored, indicating that this state shows unique and interesting temporal characteristics with variable pulse separations and inconsistent pulse intensities, which, as far as we know, is the first such observation in ultrafast fiber lasers. Additionally, this study, based on the time-stretch dispersive Fourier transformation method, suggests that these multiple pulses consist of chaotic wave envelopes with erratic intensities and changeable pulse energy. We believe that these findings have profound implications for revealing fascinating nonlinear pulse dynamics in ultrafast fiber optics. Full article
(This article belongs to the Special Issue Recent Progress in Ultrafast Laser)
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