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Photonics
Special Issues
Levitated Optomechanics
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Levitated Optomechanics

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: 20 December 2024 | Viewed by 3404

Special Issue Editors

Dr. Nan Li

E-Mail Website
Guest Editor
College of Optical Science and Engineering, Zhejiang University, Hangzhou, China
Interests: precision sensing; optical tweezers; levitated optomechanics; acceleration sensor
Prof. Dr. Huizhu Hu

E-Mail Website
Guest Editor
College of Optical Science and Engineering, Zhejiang University, Hangzhou, China
Interests: levitated optomechanics; precision sensing

Special Issue Information

Dear Colleagues,

Levitated optomechanics, focusing on mesoscopic systems that are extremely well isolated from the thermal environment, is considered as the most promising candidate for macroscopic quantum physics research and a unique tool for supporting next-generation sensing technologies. The ability to couple the motion of levitated micro- and nano-particles to internal degrees of freedom and external forces and systems paves the way to a bright new platform for science and technology. In recent years, breakthrough progress in this field has been reported, such as quantum ground state cooling, ultra-high sensitive force and acceleration sensing, and the coupling between a cavity and mechanical resonators. However, there still exist many challenging problems from theoretical and engineering aspects.

This Special Issue invites manuscripts that introduce the recent advances in “Levitated Optomechanics”. All theoretical, numerical, and experimental papers are accepted. Topics include, but are not limited to, the following:

  • Feedback cooling of levitated micro- or nano-particles;
  • Clean and precise launching strategy;
  • Real-time trapped particle characterization;
  • Novel displacement calibration method;
  • Miniature setup of optomechanics sensors;
  • Progress in cavity optomechanics;
  • Force/acceleration/torque sensing based on levitated optomechanics
  • Thermal effect of trapped particles in a vacuum;
  • Levitating particles with non-Gaussian beams in a vacuum.

Dr. Nan Li
Prof. Dr. Huizhu Hu
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

  • levitated particles
  • launching
  • feedback cooling
  • precision sensing

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Published Papers (2 papers)

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Research

12 pages, 691 KiB  
Article
Second-Order Sidebands and Group Delays in Coupled Optomechanical Cavity System with a Cubic Nonlinear Harmonic Oscillator
by Qiwen Zhao, Ying He, Yanfang Yang, Huifang Zhang and Yi Xu
Photonics 2024, 11(3), 256; https://doi.org/10.3390/photonics11030256 - 12 Mar 2024
Viewed by 1273
Abstract
The generation of second-order sidebands and its associated group delay is an important subject in optical storage and switch. In this work, the efficiency of second-order sideband generation in a coupled optomechanical cavity system with a cubic nonlinear harmonic oscillator is theoretically investigated. [...] Read more.
The generation of second-order sidebands and its associated group delay is an important subject in optical storage and switch. In this work, the efficiency of second-order sideband generation in a coupled optomechanical cavity system with a cubic nonlinear harmonic oscillator is theoretically investigated. It is found that the efficiency of second-order sideband generation can be effectively enhanced with the decrease in decay rate of optomechanical cavity, the increase in coupling strength between two cavities and the power of probe field. The slow light effect (i.e., positive group delay) is also observed in the proposed optomechanical cavity system, and can be controlled with the power of control field. Full article
(This article belongs to the Special Issue Levitated Optomechanics)
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11 pages, 4426 KiB  
Article
Miniaturized Dual-Beam Optical Trap Based on Fiber Pigtailed Focuser
by Qianyi Xiang, Nan Li, Xingfan Chen, Cheng Liu and Huizhu Hu
Photonics 2023, 10(9), 1007; https://doi.org/10.3390/photonics10091007 - 3 Sep 2023
Viewed by 1198
Abstract
Optical traps, utilizing a laser to confine and manipulate microscopic particles, are widely employed in various scientific applications. We propose a miniaturized dual-beam fiber optical trap for acceleration sensing. It comprises two counter-propagating beams’ output from a customized pair of single-mode fiber pigtailed [...] Read more.
Optical traps, utilizing a laser to confine and manipulate microscopic particles, are widely employed in various scientific applications. We propose a miniaturized dual-beam fiber optical trap for acceleration sensing. It comprises two counter-propagating beams’ output from a customized pair of single-mode fiber pigtailed focusers (SMFPF). We investigate the correlation between the misalignment and the coupling efficiency of the SMFPF pair. By maximizing the coupling efficiency, the optimal alignment is achieved. A multimode fiber (MMF) is introduced to collect and transmit side-scattered light of a trapped microsphere for motion detection. By analyzing the experimental output signal, we acquire displacement information of the trapped microspheres under both aligned and misaligned conditions. This paper provides a simple and practical solution for the alignment of dual beams and the integration of the optical traps’ levitation and detection structure, which lay a solid foundation for the further miniaturization of dual-beam optical traps. Full article
(This article belongs to the Special Issue Levitated Optomechanics)
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