Results 91 to 100 of about 19,826 (214)

Locking a microsphere whispering-gallery mode to a laser

Optics Express, 2001
We have locked a whispering-gallery resonance of a fused-silica microsphere to a frequency-scanning laser. The resonance frequency is modulated by axial compression of the microsphere, and phase-sensitive detection of the fiber-coupled optical throughput is used for locking.
J, Rezac, A, Rosenberger
openaire   +2 more sources

Two‐Photon 3D Printing of Functional Microstructures Inside Living Cells

Advanced Materials, Volume 38, Issue 25, 4 May 2026.
This study demonstrates 3D printing inside living cells by using two‐photon photo‐lithography. A bio‐compatible photoresist is injected into cells and selectively polymerized with a femtosecond laser, creating custom‐shaped intracellular structures with submicron resolution.
Maruša Mur, Aljaž Kavčič, Uroš Jagodič, Rok Podlipec, Matjaž Humar   +4 more
wiley   +1 more source

Toward Reliable Metal Halide Perovskite FETs: From Electronic Structure and Device Physics to Stability and Performance Engineering

Advanced Electronic Materials, Volume 12, Issue 7, 6 April 2026.
Metal halide perovskite field‐effect transistors (PeFETs) offer great promise for flexible, low‐cost, and high‐performance due to their excellent charge carrier properties. However, challenges like ion migration, hysteresis, and instability limit their performance.
Georgios Chatzigiannakis, Anastasia Soultati, Leonidas C. Palilis, Ermioni Polydorou, Konstantinos Davazoglou, Petros‐Panagis Filippatos, Goutham Raj Perumallapelli, Ravindra Naik Bukke, Abd. Rashid bin Mohd Yusoff, Ilhwan Ryu, Peng Gao, Alexander Chroneos, Mohammad Khaja Nazeeruddin, Maria Vasilopoulou   +13 more
wiley   +1 more source

Floating GaN whispering gallery mode micro-ring lasing with Burstein–Moss effect

AIP Advances, 2020
A floating GaN micro-ring is fabricated by standard semiconductor technology. Under pump power conditions, ultraviolet lasing with a quality factor of 3600 is obtained.
Gangyi Zhu, Ming Fang, Siqing He, Feifei Qin, Xuelin Yang, Yongjin Wang, Chunxiang Xu   +6 more
doaj   +1 more source

Laser Stabilized to a Fiber Interferometer With Close‐To‐Zero Temperature Sensitivity

Laser &Photonics Reviews, Volume 20, Issue 8, 17 April 2026.
A laser stabilized to a hollow‐core fibre interferometer is presented. The interferometer is designed to have near‐zero temperature phase‐sensitivity. Laser stabilized to this interferometer put in a non‐vacuum environment achieves ±550 kHz frequency variation over 100 h and an Allan deviation of 2 × 10−14τ, which is comparable to miniature ULE ...
Bo Shi, Irene Barbeito Edreira, Meng Ding, Zitong Feng, Win Indra, Francesco Poletti, Giuseppe Marra, Radan Slavík   +7 more
wiley   +1 more source

Graded-index whispering gallery mode resonators [PDF]

, 2005
Whispering gallery mode optical resonators which have spatially-graded refractive indices. In one implementation, the refractive index spatially increases with a distance from an exterior surface of such a resonator towards an interior of the resonator ...
Ilchenko, Vladimir, Maleki, Lutfollah, Matsko, Andrey B., Savchenkov, Anatoliy   +3 more
core   +1 more source

Whispering gallery modes in open quantum billiards

, 2001
The poles of the S-matrix and the wave functions of open 2D quantum billiards with convex boundary of different shape are calculated by the method of complex scaling. Two leads are attached to the cavities.
C. Beenakker, E. Persson, E. Persson, G. Akguc, I. Rotter, I. Rotter, I. Rotter, I. V. Zozoulenko, J. U. Nöckel, K. N. Pichugin, L. Wirtz, P. Šeba, P. Šeba, R. G Nazmitdinov, S. Drożdż, S. Ree, S. Rotter, T. Ando, T. Blomquist, Y. Alhassid   +19 more
core   +1 more source

Whispering gallery mode resonators with J-aggregates

Optics Express, 2011
We have studied the optical properties of a hybrid system consisting of cyanine dye J-aggregates attached to a spherical microcavity. A periodic structure of narrow peaks was observed in the photoluminescence spectrum of the J-aggregates, arising from the coupling between the emission of J-aggregates and the whispering gallery modes (WGMs) of the ...
Melnikau, D., Savateeva, Diana, Chuvilin, Andrey, Hillenbrand, Rainer, Rakovich, Yury P.   +4 more
openaire   +3 more sources

Fast Simulation of Wide‐Angle Coherent Diffractive Imaging

Laser &Photonics Reviews, Volume 20, Issue 7, 6 April 2026.
The propagation multi‐slice Fourier transform method is introduced as an accurate and efficient approach for describing light scattering for arbitrarily shaped objects. Its exceptional suitability for simulating coherent diffractive imaging of nanoparticles in the XUV and soft X‐ray range is demonstrated.
Paul Tuemmler, Julia Apportin, Thomas Fennel, Christian Peltz   +3 more
wiley   +1 more source

Electrodynamical Light Trapping Using Whispering-Gallery Resonances in Hyperbolic Cavities

Physical Review X, 2014
We theoretically study spherical cavities composed of hyperbolic metamaterials with indefinite permittivity tensors. Such cavities are capable of electrodynamically confining fields with deep subwavelength cavity sizes.
Chihhui Wu, Alessandro Salandrino, Xingjie Ni, Xiang Zhang   +3 more
doaj   +1 more source