light pulse

Light pulse

Ambient light (22)
Artificial light (25)
Backlight (17)
Beam of light (73)
Blue light (86)
Bright light (14)
Coherent light (12)
Efficient light (20)
Fluorescent light (11)
Green light (27)
Incandescent light (19)
Infrared light (120)
Light (2049)
Light absorption (27)
Light detector (25)
Light pulse (65)
Light scattering (20)
Light signal (21)
Light source (179)
Light switch (8)
Natural light (9)
Optical microscope (40)
Organic light (5)
Red light (35)
Reflected light (32)
Scattered light (24)
Shining light (8)
Ultraviolet light (143)
Visible light (169)
White light (27)

because it responds to the energy of individual terahertz light pulses, rather than a continuous stream of T-rays.

That opens up the possibility of making compact semiconductor devices to produce picosecond pulses of light. The researchers report their findings online in Scientific Reports.

The lasers will send brief pulses of light around 16 billion of them in a year that are optimized to pass through the canopy of even very dense forests without causing harm to animals or vegetation,

#Scientists develop an off-switch for the brain Scientists have developed essentially an ff-switchfor the brain by using light pulses to effectively shut down neural activity.

The most reliable way of doing this is to vary the time interval between light pulses with a long interval representing a 0 say

#Light pulses control graphene s electrical behavior Graphene, an ultrathin form of carbon with exceptional electrical optical and mechanical properties, has become a focus of research on a variety of potential uses.

Now researchers at MIT have found a way to control how the material conducts electricity by using extremely short light pulses

The researchers then illuminated graphene with a strong light pulse and measured the change of electrical conduction by assessing the transmission of a second low-frequency light pulse.

We use two different light pulses: one to modify the material and one to measure the electrical conduction.

Additionally the short light pulses allow the researchers to change and reveal graphene's electrical response in only a trillionth of a second.

In a conventional lidar system the laser fires pulses of light toward a sequence of discrete positions

which pulses of light are emitted and reflected photons are detected that it can rule out the misleading signals produced by stray photons.

or silence neurons with pulses of light, a method called optogenetics. Activating the projections led to compulsive sucrose-eating

which contains and channels pulses of light. They then placed a nanoscale patch of GST atop this waveguide.

they beamed in less intense pulses of light and measured how much light was transmitted through the waveguide. If little light was absorbed,

pressure signals from the skin generated light pulses that activated a line of light-sensitive nerve cells. Other methods of stimulating nerves were likely to be used in real prosthetic devices,

Time-of-Flight Principle Leddar sensors use LEDS to generate very short light pulses, typically 100,000 pulses per second.

The time-of-flight (Tof) principle essentially consists in measuring the time taken by a light pulse to travel from the sensor to a remote object

The range R of the detected object is deduced from the measured full round-trip time T of the light pulse using the simple relation R c T/2 n

where c is the speed of light in vacuum and n denotes the refractive index of the medium in which the light pulse propagates.

the light pulse is absorbed either, totally reflected, or reflected diffusely. This causes different irradiances of the echo pulse at the receiver,

The light pulses propagate through the detection area and reflected light is captured by the optics and the photodetector.

An oversampling scheme using multiple light pulses is implemented to improve the resolution of the acquired signal.

if a light pulse above a predetermined threshold is found. The threshold at which a peak in the trace is interpreted as the presence of an object depends on the signal-to-noise ratio.

and uses light pulses to control neurons. Just like a switch in your house turns your lights on and off,

Pulses of light can change the material's state from an ordered to a random state, or crystalline to amorphous.

and communicate through light pulses. The patent, numbered 9158133, gives a peek on the role contact lenses can play in the future.

The patent proposes using pulses of light invisible to the human eye which another device can read.

which shines pulses of light into the animal. Absorption of the light by pigmented cells produces sound waves

The change from crystalline to amorphous (storing data) and from amorphous to crystalline (erasing data) is initiated by ultrashort light pulses.

For reading out the data, weak light pulses are used. Permanent all-optical on-chip memories might considerably increase future performance of computers

They demonstrated a first direct observation of the so-called vacuum fluctuations by using short light pulses while employing highly precise optical measurement techniques.

The duration of their light pulses was ensured to be shorter than half a cycle of light in the spectral range investigated.

Finally, they created a light pulse with the exact cross-section needed to counteract the distortion and emerge from the fibre intact and found that it did just that. ven

Each light pulse generates an X-ray pulse. The X-rays generated have special properties: a wavelength of approximately 0. 1nm,

and from amorphous to crystalline (data-erasing) is initiated by ultrashort light pulses. For reading back the data, weak light pulses are used.

The scientists conclude that permanent all-optical on-chip memories could onsiderably increase future performance of computers while reducing their energy consumption.

then use light pulses to switch cells, or the processes being carried on inside them, on and off. For this experiment the team members engineered a line of neurons to simulate a portion of the human nervous system.

They translated the electronic pressure signals from the artificial skin into light pulses which activated the neurons,

Publishing in Nature Photonics this week, the team explained how they could send intense pulses of light through the waveguide to change the state of the GST,

The change from crystalline to amorphous (storing data) and from amorphous to crystalline (erasing data) is initiated by ultrashort light pulses.

For reading out the data, weak light pulses are used. Permanent all-optical on-chip memories might considerably increase future performance of computers

what the object looked like over the time it took the dispersed light pulse to travel through the STAMP.#

Because of this strong interaction with light, researchers also think they may be able to manipulate the material properties with light pulses. o engineer future devices,

these data show how the light pulses generate wrinkles that have large amplitudes more than 15 percent of the layer thickness

when counting the number of photons in a light pulse, can really only count up to zero,

However, here the time structure of the incoming light pulse becomes important in clarifying the measurement.

The scientists can individually target each segment of the nanosheet with a light pulse. Varying the power of the light pulses that each section received tuned how intensely they shone,

allowing the alser to produce 70 percent more perceptible colors than the most commonly used light sources.

whether they can excite these lasers with electricity instead of with light pulses. They detailed their findings online 27 july in the journal Nature Nanotechnology N

The discovery could be used as the basis of a new kind of switching device for future optical computers that use pulses of light rather than electricity to process

Today, huge amounts of data are sent incredibly fast through fibre optic-cables cables as light pulses. For that purpose they first have to be converted from electrical signals,

or fat mixed with a fluorescent dye that can be activated by short pulses of light. The finding, reported on 27 july in Nature Photonics1,

a fraction of fluorescent molecules or proteins is excited first by a weak light pulse. Then after their emission fades, another subgroup of fluorescent molecules are excited.

Largest tetanic contractions are observed with 5-ms light pulses at 30z, resulting in 84%of the maximal force induced by electrical stimulation.

An international team of researchers has used infinitely short light pulses to observe ultrafast changes in the electron-level properties of superconductors, setting a new standard for temporal resolution in the field.

"The solution we devised is based on the use of ultrafast light pulses, lasting 10 femtoseconds or 10 million billionths of a second,"says Claudio Giannetti of the Universit Cattolica del Sacro Cuore, Italy,

Today, huge amounts of data are sent incredibly fast through fibre optic-cables cables as light pulses. For that purpose they first have to be converted from electrical signals,

Since they varied the interval between the two light pulses in the process they were able to,

According to the observations, more than five picoseconds this is a few millionths of a millionth of a second elapse after the exciting light pulse arrives before the crystal starts to melt.

Shining a light pulse on to the cavity excited the dye atoms into emitting light in a tightly focused beam.

The test subjects were made to stay on one side of a cage by remotely making the implant shine pulses of light on the specific cells.

Well a frequency comb separates light pulses into discrete, equally spaced"tine-like"elements. Thus information traveling through a fiber optic cable is discrete