Results 61 to 70 of about 80,084 (309)
Scientific Reports, 2021 Swept-source optical coherence tomography (SS-OCT) is an attractive high-speed imaging technique for retinal angiography. However, conventional swept lasers vary the cavity length of the laser mechanically to tune the output wavelength. This causes sweep-
Kwan Seob Park +5 more
doaj +1 more source
Quantum phase noise and linewidth of a semiconductor laser
Electronics Letters, 1981 Quantum phase noise of a single longitudinal mode AlGaAs semiconductor laser is measured by converting it into intensity noise. A Michelson interferometer is used and a time delay is introduced. Results on spectral linewidth and noise spectrum are in good agreement with theoretical analyses based on a rate equation.
Y. Yamamoto, T. Mukai, S. Saito
openaire +1 more source
Dispersion insensitive, high-speed optical clock recovery based on a mode-locked laser diode [PDF]
, 2008 An investigation into the effects of varying levels of chromatic dispersion on a mode- locked laser diode optical clock recovery process is presented.
A. O'Hare +29 more
core +1 more source
Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens
FEBS Open Bio, EarlyView.Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee +3 more
wiley +1 more source
Stable 100 GHz Pulses Generated by injection locking of multiple lasers to an optical frequency comb
, 2014 Optical frequency combs (OFCs) can generate a wide bandwidth of regularly spaced modes with high frequency stability. Besides frequency and time metrology, OFCs can also have applications in arbitrary waveform generation and telecommunications by ...
Wu, D.S., Slavík, R., Richardson, D.J.
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Simulation of input electron noise in the free-electron laser [PDF]
, 1992 We present a calculation of the shot noise to be used as initial condition for the electron-beam phase-variables in numerical simulations of the free-electron ...
Mcneil, B.W.J., Penman, C.
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RoundMi: A quantitative method to analyze mitochondrial morphology in mitotic cells
FEBS Open Bio, EarlyView.RoundMi is a workflow for rapid analysis of mitochondrial morphology in mitotic cells. By combining adaptive preprocessing with automated segmentation and quantification, it enables accurate measurements from single focal plane images, reducing acquisition time and computational demands while remaining compatible with high‐throughput fixed and live ...
Elmira Parvindokht Bararpour +2 more
wiley +1 more source
Strong Optomechanical Squeezing of Light
Physical Review X, 2013 We create squeezed light by exploiting the quantum nature of the mechanical interaction between laser light and a membrane mechanical resonator embedded in an optical cavity. The radiation-pressure shot noise (fluctuating optical force from quantum laser
T. P. Purdy +4 more
doaj +1 more source
A Phase Fluctuation Based Practical Quantum Random Number Generator Scheme with Delay-Free Structure
Applied Sciences, 2020 Quantum random number generators are widely used in many applications, ranging from sampling and simulation, fundamental science to cryptography, such as a quantum key distribution system.
Min Huang +3 more
doaj +1 more source
, 2004 Three-level operation of a fiber distributed feedback (DFB) laser operating around 980nm is demonstrated for the first time. The ytterbium-doped DFB laser shows a maximum slope efficiency of 61% and output power of 38.2mW under a launched single-mode ...
Fu, L.B. +3 more
core +1 more source