Results 41 to 50 of about 5,806 (197)

Liquid metal frequency‐reconfigurable SIW bandpass filter based on gravity field

Electronics Letters, 2021
In this letter, a novel frequency‐reconfigurable substrate integrated waveguide (SIW) bandpass filter (BPF) based on gravity field is proposed. By inverting the proposed filter, the liquid metal would flow into or out of the non‐metallic via‐holes under ...
Yuchao Mei, Bao‐Guang Liu, Yao Yi, Hui Xu, Yerong Zhang   +4 more
doaj   +1 more source

Mechanisms of Laser Ablation in Liquids and Their Impact on the Efficiency of Nanoparticle Generation

Laser &Photonics Reviews, Volume 20, Issue 8, 17 April 2026.
Laser ablation in liquid enables nanoparticle synthesis from diverse materials but remains less energy‐efficient than ablation in air. This study quantifies the absorption‐corrected ablation efficiency and experimentally confirms redeposition as the key loss mechanism using pump‐probe microscopy.
Maximilian Spellauge, David Redka, Alexander Podhrazsky, Katharina Eckmann, Constanze Eulenkamp, Oliver Koepp, Carlos Doñate‐Buendia, Bilal Gökce, Stephan Barcikowski, Heinz Paul Huber   +9 more
wiley   +1 more source

Miniaturized Multiband Bandpass Filters Based on a Single Multimode Resonator Loading Branches

Discrete Dynamics in Nature and Society, 2022
In this paper, the operating mechanism of proposed bandpass filters with a single multimode resonator loaded with branches is introduced. Based on the design procedure, the center frequencies of the proposed bandpass filters can be controlled due to the ...
Jie Luo, Kaibo Shi, Shanshan Gao
doaj   +1 more source

Compact Millimeter-Wave On-Chip Dual-Band Bandpass Filter in 0.15-μm GaAs Technology

IEEE Journal of the Electron Devices Society, 2022
A compact on-chip dual-band bandpass filter (BPF) at millimeter-wave frequencies is proposed in 0.15- ${\mu }\text{m}$ GaAs technology. To understand the working mechanism of the BPF, an LC equivalent circuit model is presented and analyzed for position
Kai-Da Xu, Shengpei Xia, Yannan Jiang, Ying-Jiang Guo, Yiqun Liu, Rui Wu, Jianlei Cui, Qiang Chen   +7 more
doaj   +1 more source

Quantum Noise Locking

, 2005
Quantum optical states which have no coherent amplitude, such as squeezed vacuum states, can not rely on standard readout techniques to generate error signals for control of the quadrature phase. Here we investigate the use of asymmetry in the quadrature
Breitenbach G, Buchler B C, David E McClelland, Eugeniy E Mikhailov, Keisuke Goda, Kirk McKenzie, Lam P K, Malcolm B Gray, Nergis Mavalvala, Nicolai Grosse, Ping Koy Lam, Schnupp L, Scully M O, Wu L-A   +13 more
core   +1 more source

Overcomplete steerable pyramid filters and rotation invariance [PDF]

, 1994
A given (overcomplete) discrete oriented pyramid may be converted into a steerable pyramid by interpolation. We present a technique for deriving the optimal interpolation functions (otherwise called 'steering coefficients').
Anderson, C. H., Belongie, S., Goodman, R., Greenspan, H., Perona, P., Rakshit, S.   +5 more
core   +4 more sources

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

Application of Compact Folded-Arms Square Open-Loop Resonator to Bandpass Filter Design

Micromachines, 2023
Folded-arms square open-loop resonator (FASOLR) is a variant of the conventional microstrip square open-loop resonator (SOLR) that facilitates further device size miniaturization by having the two arms of the conventional SOLR folded inwards.
Augustine O. Nwajana, Emenike Raymond Obi   +1 more
doaj   +1 more source

Novel Compact and High Selectivity Dual-band BPF with Wide Stopband [PDF]

, 2012
A novel type of compact and high selectivity dual-band bandpass filter (BPF) incorporating a dual-mode defected ground structure resonator (DDGSR) and a dual-mode open-stub loaded stepped impedance resonator (DOLSIR) is proposed in this paper.
Guan, B.-R., Wang, L.
core   +1 more source

A Linear‐to‐Linear Cross‐Polarization Conversion q‐BIC Metasurface for Transmission Mode Mid‐Infrared Spectral Filtering

Laser &Photonics Reviews, Volume 20, Issue 4, 19 February 2026.
Manipulating the ultranarrow linewidth spectral features of quasi bound states in the continuum is challenging. A metasurface supporting linear‐to‐linear cross‐polarization coupling efficiency surpassing 25% is proposed to address the issue. Less than 100 nm linewidth is achieved, enabling the device to be applied to wavelength‐selective polarization ...
Shuhao Wu, Simeng Zhu, Khue Tian Lai, Lianping Hou, Vincenzo Pusino, David R.S. Cumming   +5 more
wiley   +1 more source