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Photonics
Special Issues
Technologies of Laser Wireless Power Transmission
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Technologies of Laser Wireless Power Transmission

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optical Communication and Network".

Deadline for manuscript submissions: 20 November 2025 | Viewed by 1575

Special Issue Editor

Dr. Yudan Gou

E-Mail Website
Guest Editor
College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
Interests: metal-organic chemical vapor depositio (MOCVD); solar cell; laser wireless power transmission (LWPT); laser power converters (LPCs); metamorphic buffer; tunnel junction; conversion efficiency; maximum power; output power; photonics; III-V semiconductor material; laserhttps://eie.scu.edu.cn/info/1046/12329.htm
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Laser wireless power transmission (LWPT) technology uses lasers as a carrier to realize the wireless transmission of electric power in free space. LWPT technology can quickly rebuild power supplies for disaster relief sites, local battlefield equipment, and also for unmanned aerial vehicles, space vehicles, and other equipment, and its huge application prospects are widely recognized by researchers.

The core part of LWPT technology is the laser at the transmitting end and the laser power converter (LPC) at the receiving end, whose performance directly determines the output characteristics of the transmission link; therefore, research concerning the laser and the LPC is very important.

This Special Issue aims to present an overview of cutting-edge research, visions, results, and their applications. We welcome broad, visionary contributions of short research reports, as well as a collection of reviews of accomplishments. We are excited to invite researchers to submit their contributions to this Special Issue. Topics include, but are not limited to, the following:

  • Metal–organic chemical vapor deposition (MOCVD);
  • Solar cell;
  • Metamorphic buffer;
  • III-V semiconductor material;
  • Tunnel junction;
  • Laser wireless power transmission (LWPT);
  • Laser power converters (LPCs);
  • Laser.

Dr. Yudan Gou
Guest Editor

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

  • metal–organic chemical vapor deposition (MOCVD)
  • solar cell
  • metamorphic buffer
  • III-V semiconductor material
  • tunnel junction
  • laser wireless power transmission (LWPT)
  • laser power converters (LPCs)
  • laser

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Published Papers (2 papers)

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Research

15 pages, 2673 KB  
Article
Research on and Experimental Verification of the Efficiency Enhancement of Powerspheres Through Distributed Incidence Combined with Intracavity Light Uniformity
by Tiefeng He, Jiawen Li, Chongbo Zhou, Haixuan Huang, Wenwei Zhang, Zhijian Lv, Qingyang Wu, Lili Wan, Zhaokun Yang, Zikun Xu, Keyan Xu, Guoliang Zheng and Xiaowei Lu
Photonics 2025, 12(10), 957; https://doi.org/10.3390/photonics12100957 - 27 Sep 2025
Viewed by 254
Abstract
In laser wireless power transmission systems, the powersphere serves as a spherical enclosed receiver that performs photoelectric conversion, achieving uniform light distribution within the cavity through infinite internal light reflection. However, in practical applications, the high level of light absorption displayed by photovoltaic [...] Read more.
In laser wireless power transmission systems, the powersphere serves as a spherical enclosed receiver that performs photoelectric conversion, achieving uniform light distribution within the cavity through infinite internal light reflection. However, in practical applications, the high level of light absorption displayed by photovoltaic cells leads to significant disparities in light intensity between directly irradiated regions and reflected regions on the inner surface of the powersphere, resulting in poor light uniformity. One approach aimed at addressing this issue uses a spectroscope to split the incident beam into multiple paths, allowing the direct illumination of all inner surfaces of the powersphere and reducing the light intensity difference between direct and reflected regions. However, experimental results indicate that light transmission through lenses introduces power losses, leading to improved uniformity but reduced output power. To address this limitation, this study proposes a method that utilizes multiple incident laser beams combined with a centrally positioned spherical reflector within the powersphere. A wireless power transmission system model was developed using optical simulation software, and the uniformity of the intracavity light field in the system was analyzed through simulation. To validate the design and simulation accuracy, an experimental system incorporating semiconductor lasers, spherical mirrors, and a powersphere was constructed. The data from the experiments aligned with the simulation results, jointly confirming that integrating a spherical reflector and distributed incident lasers enhances the uniformity of the internal light field within the powersphere and improves the system’s efficiency. Full article
(This article belongs to the Special Issue Technologies of Laser Wireless Power Transmission)
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11 pages, 3180 KB  
Communication
Cooling Fiber Laser Power Converter Systems by Immersion in Oil
by Denis Masson and Simon Fafard
Photonics 2025, 12(5), 431; https://doi.org/10.3390/photonics12050431 - 30 Apr 2025
Viewed by 823
Abstract
We demonstrate the use of Laser Power Converters (LPCs) driven by fiber laser light while immersed in transformer oil for heat management purposes. Reliability tests performed via extended continuous operation using 6–7 W of input power from 808 nm and 976 nm light [...] Read more.
We demonstrate the use of Laser Power Converters (LPCs) driven by fiber laser light while immersed in transformer oil for heat management purposes. Reliability tests performed via extended continuous operation using 6–7 W of input power from 808 nm and 976 nm light propagating through oil show no degradation of components nor transmission losses from the oil for up to 1000 h. The operation of a bare die designed for use with 1040–1080 nm light and in direct contact with oil is also shown to be feasible. We discuss how the use of transformer oil can be beneficial to transfer excess heat away from LPCs in special applications. Full article
(This article belongs to the Special Issue Technologies of Laser Wireless Power Transmission)
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