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Photonics
Special Issues
Novel Laser Technologies and Their Applications
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Novel Laser Technologies and Their Applications

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

Deadline for manuscript submissions: 20 August 2024 | Viewed by 2879

Special Issue Editors

Dr. Changqing Cao

E-Mail Website
Guest Editor
School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China
Interests: optics; laser technology (photoelectric detection; target recognition; coherent optical communication; high-power laser; photoelectric imaging and artificial intelligence image processing)
Special Issues, Collections and Topics in MDPI journals
Dr. Lixin Liu

E-Mail Website
Guest Editor
School of Optoelectronic Engineering, Xidian University, Xi'an 710071, China
Interests: optical imaging; spectroscopy; hyperspectral imaging technology and applications

Special Issue Information

Dear Colleagues,

Recent advances in high-power laser technology have introduced novel phenomena and mechanisms in materials. To reveal the complex high-temperature and high-pressure physical processes with significant multiphase, multiscale and multifield coupling characteristics, we require advanced computational methods, diagnostic technologies and artificial intelligent (AI) technology. This understanding could accelerate the application of high-power lasers in various industrial sectors, such as advanced manufacturing, thermal protection, rock removal, laser cleaning, laser weapons, and a wide range of other areas.

This Special Issue aims to be a forum for the presentation of the latest developments in basic and applied research in the field of laser interaction with matter. Potential topics include but are not limited to:

  • Phenomena and mechanisms of laser ablation and damage;
  • Theoretical, numerical and experimental characterization;
  • Laser irradiation effect and mechanism;
  • Laser spectrum technology and applications;
  • High-power lasers.

Dr. Changqing Cao
Dr. Lixin Liu
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

  • light–matter interaction
  • light field manipulation and applications
  • solid state
  • fiber, and other laser sources
  • optical materials
  • optical imaging
  • optical measurement
  • optical sensors and systems
  • infrared and terahertz technologies

Published Papers (2 papers)

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Research

15 pages, 4915 KiB  
Article
Properties of Scattering Fields from Gaussian Beam Incident on Rough Cylinders
by Shubing Ye, Guobin Feng, Zhejun Feng, Zhenbao Wang, Dahui Wang and Changqing Cao
Photonics 2023, 10(6), 699; https://doi.org/10.3390/photonics10060699 - 20 Jun 2023
Viewed by 989
Abstract
At present, most researchers focus on plane wave incident on targets, but in practical applications, most of the beams are Gaussian beam. We study the scattering fields of Gaussian beam incident on rough cylinders. Coherent and incoherent scattering coefficients are obtained based on [...] Read more.
At present, most researchers focus on plane wave incident on targets, but in practical applications, most of the beams are Gaussian beam. We study the scattering fields of Gaussian beam incident on rough cylinders. Coherent and incoherent scattering coefficients are obtained based on the angular spectrum expansion and physical optics approximation, and the effects of cylinder roughness, beam radius, cylinder radius and angle of incidence on scattering coefficients are analyzed. The results show that, for a constant wavelength, when the root mean square height is greater than or equal to 1/5 of the wavelength, the coherent scattering coefficient curve undergoes a change in its distribution, with the peak transforming into a trough. Furthermore, when the root mean square height is greater than or equal to 1/3 of the wavelength, the incoherent scattering coefficient experiences a decline as the root mean square height increases. The correlation length only affects the incoherent scattering coefficient. Both the coherent and incoherent scattering coefficients decrease with the increase in the incident angle. Finally, when the roughness and incident angle are constant, with the increase in the ratio of the cylinder radius to the beam waist radius, the scattered light field is more concentrated. Our results provide the theoretical basis for the measurement of the cylindrical scattering field. Full article
(This article belongs to the Special Issue Novel Laser Technologies and Their Applications)
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19 pages, 12721 KiB  
Article
Beam Properties of a Partially Coherent Beam Propagating Horizontally in Atmospheric Turbulence
by Zengyan Wu, Zhejun Feng, Shubing Ye, Baoming Song, Runxi Wei and Chaoran Yu
Photonics 2023, 10(4), 477; https://doi.org/10.3390/photonics10040477 - 21 Apr 2023
Cited by 3 | Viewed by 1267
Abstract
This study explored the impact of atmospheric turbulence on partially coherent light propagation. Atmospheric turbulence causes random modulation of the intensity and phase of light, resulting in a speckle pattern in the far field. This study focused on partially coherent Gaussian Schell model [...] Read more.
This study explored the impact of atmospheric turbulence on partially coherent light propagation. Atmospheric turbulence causes random modulation of the intensity and phase of light, resulting in a speckle pattern in the far field. This study focused on partially coherent Gaussian Schell model beams and derived an analytical expression of the cross-spectral density function for their transmission through atmospheric turbulence, based on the generalized Huygens–Fresnel principle and the Tatarski spectrum model. Numerical simulations were used to investigate the effects of the source parameters and turbulence strength on the intensity distribution, beam width, and coherence length of partially coherent light in horizontal atmospheric transmission. The results demonstrate that diffraction-induced broadening primarily affects the intensity distribution of light in free-space transmission. Short transmission distances in atmospheric turbulence have comparable characteristics to those in a vacuum; however, as the turbulence intensity and transmission distance increase, the beam broadening effect amplifies, and the coherence length is reduced. The findings are relevant to the design of acquisition, pointing, and tracking systems for wireless laser communication systems and offer insights into the optimization of optical systems for atmospheric conditions. Full article
(This article belongs to the Special Issue Novel Laser Technologies and Their Applications)
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