Article
Chemistry, Multidisciplinary
Subha Jana, Xiangzhen Xu, Andrey Klymchenko, Andreas Reisch, Thomas Pons
Summary: The Whispering gallery mode (WGM) microcavities are potential candidates in biosensing applications as their resonance wavelengths shift with changes in the refractive index. They offer high-quality resonance modes and accessible surface functionalities, making them promising for molecular assays, but their high sensitivity also makes them inherently unstable. The WGM resonances are also shown to strongly enhance fluorescence energy transfer between donors and acceptors, providing a potentially powerful class of biosensors combining sensitivity and simple detection schemes.
Article
Physics, Applied
Hanyang Li, Haoran Zhang, Shuangqiang Liu
Summary: Coupled microspherical whispering gallery modes are highly sensitive to changes in the contact region between microcavities. Researchers propose a bi-sphere resonator structure with a water droplet between two microspheres and investigate its spectral characteristics by monitoring the transmission spectral signal during water evaporation. The feasibility of the proposed sensor device is demonstrated by a refractive index sensing experiment.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Xing-Yu Wu, Yong Zhang, Yong-Pan Gao, Chuan Wang
Summary: Research on optomagnonic structures has shown that magnon modes located near the edge of microresonators exhibit stronger coupling strength with optical modes, leading to efficient magneto-optical interaction and promoting the development of magneto-optical control, optical-microwave interaction, and optical nonlinearity.
Article
Optics
Xiaoyu Shi, Wanting Song, Dan Guo, Junhua Tong, Tianrui Zhai
Summary: In order to achieve a higher level of secure communication, efforts have been made to develop encryption and anticounterfeiting strategies. One significant approach is the concept of a spectral encryption based on selectively visualized spectral modes in random lasers. By coupling with external whispering gallery mode cavity, hidden localized lasing modes with special multiple-peaks spectra are selected for secure information encryption.
LASER & PHOTONICS REVIEWS
(2021)
Article
Physics, Multidisciplinary
Elisa Will, Luke Masters, Arno Rauschenbeutel, Michael Scheucher, Juergen Volz
Summary: The study demonstrates trapping of a single Rb-85 atom approximately 200 nm away from the surface of a whispering-gallery-mode bottle microresonator, and shows the observation of vacuum Rabi splitting in the excitation spectrum of the atom-resonator system. This first stable and controlled interaction of a single atom with the whispering-gallery mode in the strong coupling regime has potential for implementing quantum protocols and applications utilizing the chiral atom-light coupling in such resonators.
PHYSICAL REVIEW LETTERS
(2021)
Review
Optics
A. E. Zhukov, N. Kryzhanovskaya, E. Moiseev, M. Maximov
Summary: The paper discusses microlasers with emission spectra determined by whispering gallery modes, utilizing various types of In(Ga)As quantum dots. Deep localization of charge carriers helps overcome undesirable effects, enabling the realization of microlasers capable of operating at elevated temperatures without temperature stabilization.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Optics
H. M. de la Cruz, E. D. Hernandez-Campos, E. Ortiz-Ricardo, A. Martinez-Borquez, I. Rosas-Roman, V. Contreras, G. Ramos-Ortiz, B. Mendoza-Santoyo, Cecilia I. Zurita-Lopez, R. Castro-Beltran
Summary: Acoustic levitation is an important contactless manipulation technique in various fields. This study presents an affordable phased-array levitator that can stably trap micrometer dye-doped droplets in the air, enabling the creation of microlasers. The levitated microlasers exhibit comparable optical lasing features to On-a-Chip devices, with a maximum Q-factor of approximately 105 and a minimum lasing threshold of approximately 150 nJ cm-2.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Xavier Zambrana-Puyalto, Davide D'Ambrosio, Gianluca Gagliardi
Summary: Whispering gallery modes are light modes that arise in cylindrically symmetric structures, with intensity profile strongly confined around the interface. Analytical demonstration shows that the coupling mechanism is related to angular momentum matching between inner WGMs of the sphere and incident beam. The model quantitatively predicts optical coupling efficiency for any tangential position of the incident beam.
LASER & PHOTONICS REVIEWS
(2021)
Article
Optics
Y. E. Geints, O. V. Minin, I. V. Minin
Summary: This study presents a miniature pressure sensor based on coupled whispering-gallery mode (WGM) resonators. It utilizes the changes in optical intensity of the WGMs to carry information about the position of the pressure-loaded membrane. The sensor has the advantages of a miniature design and the absence of mechanical contact.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Junhua Tong, Kun Ge, Zhiyang Xu, Tianrui Zhai
Summary: This study reports a switchable WGM lasing device based on phase transition, where the number of WGM lasing modes can be controlled and single-mode lasing can be achieved by manipulating the phase transition. This research has significant potential for various applications.
Article
Engineering, Environmental
Peilin Wang, Yixin Nie, Yu Tian, Zihui Liang, Shuping Xu, Qiang Ma
Summary: In this study, a surface enhanced electrochemiluminescence (SEECL) sensing system based on whispering gallery mode was developed, utilizing Ni-doped MoS2 quantum dots as ECL emitters. This system incorporated Au nanoparticles and SiO2 dielectric microspheres to enhance ECL intensity, allowing for quantification of the K-RAS gene with a detection limit of 0.3 fM.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Optics
Tong Chen, Hao Zhang, Miaoling Yang, Yuan Yao, Wei Lin, Shaoxiang Duan, Bo Liu
Summary: In this paper, a dual-core eccentric-hole fiber (DCEHF) microresonator is proposed for achieving single-longitudinal mode (SLM) laser emission. The enhanced pump light field induced by scattering effect of the two fiber cores is utilized in the microresonator. The experimental results show that the proposed microresonator supports highly stable SLM laser emission and possesses several desirable merits.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Jie Liao, Lan Yang
Summary: Temperature measurement using optical barcodes from whispering-gallery sensors can be greatly improved by simultaneously monitoring different modes of optical signals. This technique overcomes limitations of existing single-mode sensors, providing high-precision and large-dynamic-range temperature measurements.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Jun Ruan, Dan Guo, Ben Niu, Kun Ge, Tianrui Zhai
Summary: This study proposes a gravity-assisted rotatory drawing method for fabricating multicolor lasing microfibers and weaving them into flexible textiles. Full-color tunable lasing textiles can be achieved by regulating the doped dyes and solution viscosity. Furthermore, nanoparticle patterns are printed on the lasing textile for anticounterfeiting application.
NPG ASIA MATERIALS
(2022)
Article
Optics
Jing Yan, D. N. Wang, Xin Liu, Jikai Chen
Summary: A low-cost whispering gallery mode tunable microlaser based on dual erbium-doped microspheres was demonstrated in this study, allowing for the tuning of lasing wavelength and emission power by adjusting the pumping laser power.
OPTICS AND LASER TECHNOLOGY
(2021)
