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Electronics
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Emerging Trends in Ultra-Stable Semiconductor Lasers
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Emerging Trends in Ultra-Stable Semiconductor Lasers

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Semiconductor Devices".

Deadline for manuscript submissions: 15 August 2026 | Viewed by 1469

Special Issue Editors

Dr. Tiantian Shi

E-Mail Website
Guest Editor
School of Integrated Circuits, Peking University, Beijing 100871, China
Interests: compact atomic clocks; frequency stabilized diode lasers
Dr. Wei Zhuang

E-Mail Website
Guest Editor
National Institute of Metrology, Beijing 100029, China
Interests: atomic clocks; atomic gravimeters; quantum precision measurement
Dr. Zheyi Ge

E-Mail Website
Guest Editor
State Key Laboratory of Advanced Optical Communication Systems and Networks, Institute of Quantum Electronics, School of Electronics, Peking University, Beijing 100871, China
Interests: diode lasers; quantum precision measurement

Special Issue Information

Dear Colleagues,

Semiconductor lasers offer fundamental advantages, including compact size, low power consumption, spectral versatility, and exceptional reliability, making them indispensable in optical communications, quantum sensing, and precision metrology. Among their key performance metrics, laser linewidth stands out as a critical indicator of coherence, playing a pivotal role in system evaluation.

To achieve linewidth narrowing, two primary approaches are widely employed: optical feedback and electrical feedback techniques.

  1. Optical Feedback Methods:
  • Extended cavities to suppress spontaneous emission noise;
  • Injection locking for active linewidth compression.
  1. Electrical Feedback Methods:
  • Atomic spectroscopy stabilization: Locking the laser wavelength to atomic references for frequency stabilization;
  • Pound–Drever–Hall (PDH) technique: Frequency stabilization using high-finesse optical resonators or high-Q microcavities for ultra-narrow-linewidth operation.

Beyond conventional methods, recent breakthroughs have introduced Faraday laser technology—an innovative semiconductor laser architecture integrating narrow-bandwidth atomic filters for frequency selection. This approach enables simultaneous linewidth compression and frequency stabilization in external-cavity semiconductor lasers, positioning it as a leading solution for next-generation high-precision, ultra-narrow-linewidth, and frequency-stable laser systems.

Furthermore, alongside linewidth optimization, enhancing frequency stability has become a major focus for expanding semiconductor laser applications in precision measurement. Active stabilization techniques, such as locking laser wavelengths to atomic/molecular transitions or ultra-stable cavity modes, are proving highly effective in broadening their utility.

These advancements are accelerating the adoption of semiconductor lasers across diverse industries, including the following:

  • Laser sonar systems;
  • Atomic clocks;
  • Atomic gravimeters;
  • Atomic magnetometers;
  • Atomic gyroscopes;
  • LIDAR systems;
  • Rydberg atom-based radar;
  • Optical communication networks.

Dr. Tiantian Shi
Dr. Wei Zhuang
Dr. Zheyi Ge
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 250 words) can be sent to the Editorial Office for assessment.

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. Electronics is an international peer-reviewed open access semimonthly 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

  • ultra-stable frequency
  • narrow laser linewidth
  • precision measurement
  • optical communication

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Published Papers (2 papers)

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13 pages, 1489 KB  
Article
Miniaturized 852 nm Cesium Atomic Frequency-Selective Semiconductor Laser
by Peipei Chen, Renjie Shan, Zijie Liu, Zheng Xiao, Zheyi Ge, Haidong Liu, Tiantian Shi and Jingbiao Chen
Electronics 2026, 15(9), 1806; https://doi.org/10.3390/electronics15091806 - 24 Apr 2026
Viewed by 292
Abstract
In the fields of atomic physics, quantum sensing, and precision measurement, 852 nm lasers are essential for the resonant excitation and manipulation of the cesium (Cs) D2 transition (6S1/2→6P3/2). While [...] Read more.
In the fields of atomic physics, quantum sensing, and precision measurement, 852 nm lasers are essential for the resonant excitation and manipulation of the cesium (Cs) D2 transition (6S1/2→6P3/2). While significant global progress has been made in developing 852 nm laser based on distributed feedback (DFB) lasers and external cavity diode lasers (ECDL), the burgeoning demand for portable and integrated quantum instruments imposes stringent requirements on miniaturization and long-term, maintenance-free operation. To address the challenge of mode competition in Faraday lasers, this work demonstrates a frequency-stabilized semiconductor laser based on an atomic frequency-selective architecture. By utilizing a customized Faraday Anomalous Dispersion Optical Filter (FADOF) for frequency selection, the laser wavelength automatically corresponds to the Cs 852 nm D2 transition, offering “Plug-and-play” operation. To further enhance integration, we propose and demonstrate a miniaturized Faraday laser architecture that resolves the instability caused by the mismatch between the FADOF transmission bandwidth and the free spectral range (FSR) of the external cavity. By employing a 7000 Gs magnetic field, the FADOF bandwidth is actively broadened to ∼15 GHz, while the cavity length is concurrently compressed to 30 mm to maximize FSR to effectively suppressing unstable mode competition. The resulting laser achieves a highly compact dimension of 102×109×96mm3. Performance testing demonstrates a Lorentzian fitted linewidth of 16.4kHz and a 1-s frequency stability of 3.05×10−13 after modulation transfer spectroscopy (MTS)-based frequency locking. This robust and autonomous 852 nm laser source provides a critical technological foundation for the miniaturization of high-performance quantum sensors. Full article
(This article belongs to the Special Issue Emerging Trends in Ultra-Stable Semiconductor Lasers)
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15 pages, 1288 KB  
Article
Magnetic Field Effects on Energy Coupling in Scaled Laser-Driven Magnetized Liner Inertial Fusion
by Xuming Feng, Guozhuang Li, Hua Zhang, Shijia Chen, Liangwen Chen, Yong Sun, Rui Cheng, Jie Yang, Lei Yang and Zhiyu Sun
Electronics 2025, 14(21), 4226; https://doi.org/10.3390/electronics14214226 - 29 Oct 2025
Viewed by 827
Abstract
In scaled laser-driven magnetized liner inertial fusion (MagLIF), externally applied magnetic fields improve energy coupling by suppressing electron thermal conduction, enhancing Joule heating, and increasing α-particle energy deposition. However, confinement can be significantly degraded by magnetic flux transport, dominated by resistive diffusion, [...] Read more.
In scaled laser-driven magnetized liner inertial fusion (MagLIF), externally applied magnetic fields improve energy coupling by suppressing electron thermal conduction, enhancing Joule heating, and increasing α-particle energy deposition. However, confinement can be significantly degraded by magnetic flux transport, dominated by resistive diffusion, and more critically, the Nernst effect. One-dimensional magnetohydrodynamic simulations demonstrate that increasing the applied field generally enhances neutron yield, but when the Nernst effect is included, the benefit of stronger magnetization diminishes. Stagnation is achieved at 2.72 ns, yielding a peak temperature of 2.17 keV and a neutron production of 1.2×1012. When the Nernst effect is taken into account, the neutron yield decreases by 57.3% compared with the case without it under an initial magnetic field of 10 T. During the implosion, the magnetic field in the fuel gradually diffuses outward into the outer liner. By stagnation, the magnetic flux of fuel has decreased by 33.8%. Based on the characteristics of the Nernst effect, an optimized initial magnetic field of approximately 6 T is identified, which yields an about 2.5 times higher neutron yield than the unmagnetized case. These findings emphasize the key role of magnetic–energy coupling in target performance and provide guidance for the design and scaling of magnetized targets. Full article
(This article belongs to the Special Issue Emerging Trends in Ultra-Stable Semiconductor Lasers)
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