Results 51 to 60 of about 25,049 (217)
Photonics, 2023 Atmospheric turbulence causes signal beam wavefront distortion at the receiving end of a coherent detection system, which decreases the system mixing efficiency.
Shangjun Yang +4 more
doaj +1 more source
Signal-to-Noise Ratio in Squeezed-Light Laser Radar
, 2009 The formalism for computing the signal-to-noise ratio (SNR) for laser radar is reviewed and applied to the tasks of target detection, direction-finding, and phase change estimation with squeezed light.
Annovazzi-Lodi +7 more
core +2 more sources
Video-rate laser Doppler vibrometry by heterodyne holography [PDF]
, 2011 We report a demonstration video-rate heterodyne holography in off-axis configuration. Reconstruction and display of 1 Megapixel holograms is achieved at 24 frames per second, with a graphics processing unit.
Ahrenberg +18 more
core +5 more sources
The Journal of Physiology, Volume 604, Issue 7, Page 3114-3134, 1 April 2026.Abstract figure legend Increases in testosterone are associated with developmental changes in motor‐related neural oscillations in youth. Abstract Motor control is critical to daily functioning and undergoes significant refinement throughout youth. Although the effects of age on the underlying brain circuitry have been well characterized, fewer studies
Jackson Derby +12 more
wiley +1 more source
First Principles Rovibronic Absorption Spectra of HF Molecule
Journal of Computational Chemistry, Volume 47, Issue 6, March 5, 2026.Hydrogen fluoride (HF) is astrophysically important, as it has been detected in sunspots, Venus, red giants, and the interstellar medium, serving as a probe of exoplanet atmospheres. This article presents an ab initio investigation of HF rovibronic spectroscopy, combining high‐level electronic‐structure data with nuclear‐motion solutions and refinement
Nariman Abu El Kher +5 more
wiley +1 more source
Heterodyne Holography with full control of both signal and reference arms
, 2015 Heterodyne holography is a variant of phase shifting holography in which reference and signal arms are controlled by acousto optic modulators. In this review paper, we will briefy describe the method and its properties, and we will illustrate its ...
Gross, Michel
core +3 more sources
Quantum theory of cross correlation heterodyne detection
Journal of the Optical Society of America B, 2022 Cross correlation heterodyne detectors exhibit the potential for suppression of the detection quantum noise below shot noise without use of optical squeezing for capturing weak optical signals in low frequency bands. To understand the underlying mechanism, we develop a quantum theory to describe the noise performance of cross correlation heterodyne ...
Sheng Feng, Kaikai Wu
openaire +2 more sources
Engineered Optical Fibers for Deep‐Tissue Applications
Advanced Optical Materials, Volume 14, Issue 10, 13 March 2026.This review establishes a foundational framework for designing optical fibers for deep‐tissue medicine. It systematically links material innovations like polymers and hydrogels with structural paradigms to enable state‐of‐the‐art diagnostics, including endoscopy and biosensing, and targeted therapeutics, guiding future clinical translation.
Yuzhen Li +16 more
wiley +1 more source
Nanophotonics, 2023 In this study, we experimentally showcase the microfiber evanescent-field photothermal gas detection by exploiting all-fiber MHz-level frequency shift scheme. Based on the acousto-optic interaction effect, the low-frequency shifts of 0.9 MHz and 1.83 MHz
Zhu Yi +7 more
doaj +1 more source
Human Brain Mapping, Volume 47, Issue 4, March 2026.Using fast functional MRI, we assessed low‐frequency oscillations arising from cardiorespiratory pulsations and oscillatory interaction between respiratory and cardiac pulsations in primary central nervous system lymphoma. Respiratory‐related oscillations showed brain‐wide increases with a link to mortality whereas increases in cardiovascular‐related ...
Valter Poltojainen +15 more
wiley +1 more source