Results 41 to 50 of about 734,125 (345)
Sub-SQL Sensitivity via Optical Rigidity in Advanced LIGO Interferometer with Optical Losses [PDF]
, 2005 The ``optical springs'' regime of the signal-recycled configuration of laser interferometric gravitational-wave detectors is analyzed taking in account optical losses in the interferometer arm cavities.
A. V. Syrtsev +12 more
core +1 more source
Frequency ratio measurement of 171Yb and 87Sr optical lattice clocks [PDF]
, 2014 The frequency ratio of the 1S0(F=1/2)-3P0(F=1/2) clock transition in 171Yb and the 1S0(F=9/2)-3P0(F=9/2) clock transition in 87Sr is measured by an optical-optical direct frequency link between two optical lattice clocks. We determined the ratio (\nu_{Yb}/\nu_{Sr}) to be 1.207 507 039 343 340 4(18) with a fractional uncertainty of 1.5x10^{-15}.
arxiv +1 more source
Enhancement of second-order nonlinear-optical signals by optical stimulation [PDF]
, 2015 Second-order nonlinear optical interactions such as sum- and difference-frequency generation are widely used for bioimaging and as selective probes of interfacial environments.
Goodman, Aaron J., Tisdale, William A.
core +2 more sources
Photonics, 2023 A multispectral infrared zoom optical system design and a single-frame hierarchical guided filtering image enhancement algorithm are proposed to address the technical problems of low contrast, blurred edges, and weak signal strength of single-spectrum ...
Shuai Yang +4 more
doaj +1 more source
High contrast optical modulation by surface acoustic waves [PDF]
, 2003 Numerical Calculations are employed to study the modulation of light by surface acoustic waves (SAWs) in photonic band gap (PBG) structures. The on/off contrast ratio in PBG switch based on optical cavity is determined as a function of the SAW induced dielectric modulation.
arxiv +1 more source
, 1999 A recent theory is reviewed for the shot noise of coherent radiation propagating through a random medium. The Fano factor P/I (the ratio of the noise power and the mean transmitted current) is related to the scattering matrix of the medium.
Beenakker, C. W. J., Patra, M.
core +5 more sources
A Pulse Shaping Based Optical Transmission System of 128QAM for DWDM with N × 904 Gbps
Applied Sciences, 2019 In this paper, we propose an optical transmission system of 128 quadrature amplitude modulation for dense wavelength division multiplexing. In such a system, Gaussian optical filtering is used to get an appropriate photonic carrier.
Guang Li, Jianqing Li
doaj +1 more source
Simple Noise Mitigation Scheme for Coherent Optical DMT Signal Transmission System
IEEE Access, 2020 We propose and experimentally demonstrate a noise mitigation scheme for coherent optical discrete multitone (DMT) signal transmission system. The proposed scheme can mitigate the laser phase noise and additive white Gaussian noise (AWGN) simultaneously ...
Ke Li +7 more
doaj +1 more source
Precision of cavity-enhanced optical rotation measurements [PDF]
, 2016 The signal to noise ratio in atomic magnetometry is fundamentally limited by the optical depth of the atomic ensemble. During the last decade, different technics for optical depth enhancement has been developed by several groups, some of them involving ...
Guimbao Gaspar, Joaquín
core +1 more source
Molecular Oncology, EarlyView.There is an unmet need in metastatic breast cancer patients to monitor therapy response in real time. In this study, we show how a noninvasive and affordable strategy based on sequencing of plasma samples with longitudinal tracking of tumour fraction paired with a statistical model provides valuable information on treatment response in advance of the ...
Emma J. Beddowes +20 more
wiley +1 more source