First, ultrafast lasers are not as monochromatic as most other lasers. This is because the fundamental physics of ultrafast lasers dictates that as the pulsewidth gets shorter, the spectral bandwidth (range of wavelengths) of the output increases. For example, the 12 fs pulses produced by theCoh...
Shock waves are sound waves. They occur in the atmosphere during explosive events, for example during detonations or lightning strikes, or when aeroplanes break through the sound barrier. Shock waves are acoustic pulses characterized by high positive pressure amplitudes and a steep pressure increase c...
Pulses in optical fibresRogue wavesWater wavesThe formation of breathers as prototypes of freak waves is studied within the framework of the classic 'focussing' nonlinear Schrdinger (NLS) equation. The analysis is confined to evolution of localised initial perturbations upon an otherwise uniform wave ...
What makes a wave a wave? What characteristics, properties, or behaviors are shared by the phenomena that we typically characterize as being a wave? How can waves be described in a manner that allows us to understand their basic nature and qualities? In
The brain is made up of cells that are called Neurons. There are millions of electrical pulses passing between neurons, that are transmitting signals to each other When those signals spread, clusters of neurons begin receiving feedback from each other, leading to a repeating cycle or rhythm, kn...
Photonics is a multidisciplinary domain that involves the generation, control, manipulation, and detection of light.
This equation allows the calculation of the other parameters when the rest are known. Several measurements may be made using, for example, two known CO* concentration, or two known electrode areas (A), to measure this dependence. Calculating the Polarographic Half Wave Potential and n Value Via...
The diodes must be capable of dissipating the energy present in ESD pulses. They must be able to switch at high speed, safely dissipate energy, and occupy minimal die area. The diagram below, which illustrates how this was achieved, is the actual structure used for receiver input and transmit...
In addition, while most current lidar systems utilize Time-of-Flight (ToF) detection technologies, many next-generation systems are looking to leverage Frequency-Modulated Continuous Wave (FMCW) detection. Manufacturers may use a single type, or all of them at once. Go beyond vehicles and the ...
To manipulate (an electric current, electromagnetic wave, etc.) so that it is emitted in pulses. Pulse Of an activity, place, or thing: to bustle with energy and liveliness; to pulsate. Pulse Leguminous plants, or their seeds, as beans, pease, etc. If all the worldShould, in a pet ...