He is completely blind in his right eye, but that doesn't stop him from staring
laser beams through me while I'm eating.
The researchers focused the smaller
laser beams through the cloud of ultracold atoms and found that each beam's focus — the point at which the beam's intensity was highest — attracted a single atom, essentially picking it out from the cloud and holding it in place.
«When we focus about one hundred
laser beams through this cloud, each of them acts like a trap.
Can you direct
a laser beam through a maze using your brain?Sounds impossible, but that's the object of this mental workoutthat features challenges for beginners to experts.
To do so they made the atoms in the sample vibrate by shining
a laser beam through a small hole in the photodetector, which was placed right on top of the sample.
They then directed a second
laser beam through an instrument that splits the laser beam into many smaller beams, the number and angle of which depend on the radio frequency applied to the deflector.
They directed
a laser beam through a lens and onto a mirror, which reflected back a second beam.
These are emitted by the quadrillion from the fusion factory at the core of the sun and usually pass through matter like
a laser beam through fog.
The FroliCat Dart takes the traditional laser one step further by automatically rotating
a laser beam through the room, leading your cat on an endless chase.
Not exact matches
A
laser beam (consisting of coherent light) is split by being passed
through a half silvered mirror.
LIGO detects gravitational waves by splitting a powerful infrared
laser beam in two, then sending the
beams at right angles
through tunnels to mirrors 2.5 miles away.
SPACING OUT Quantum communication
through space is possible thanks to a Chinese satellite that
beams particles of light down to telescopes like this one in Xinglong, China (shown here tracking the satellite's location with a
laser).
This cosmic paperweight is handmade by an artist who uses
laser beams to make tiny stars: Each
laser pulse passes
through the glass except at its focal point, where the concentrated energy creates a bright star.
In the 1970s, researchers at Lawrence Livermore National Laboratory (LLNL) in California focused on the former, boosting
laser energy by routing
beams through additional lasing crystals made of glass doped with neodymium.
To insure the
beam's integrity, the
laser travels
through sealed stainless steel tubes, 1.2 meters wide, that hold a vacuum to just one trillionth of earth's atmosphere, eight times less than open space.
In that experiment, a
laser beam passes
through a pair of vertical slits, producing an interference pattern of bright and dark areas on a screen.
To figure out the structure of a protein, you shoot a
laser beam, ideally while mimicking a cartoon
laser sound,
through a crystal of that protein and study the resulting light diffraction pattern.
Now, when the
laser beams rejoin, scientists see interference in the light's pattern, a jarring mismatch of peaks and valleys that spill the secrets of gravitational waves — if scientists can read
through the static of local noise that can also jiggle the mirrors and mar the signal.
The Advanced LIGO experiment in the US, freshly revamped to boost its sensitivity, fires
lasers through 4 kilometre - long tunnels and measures minute changes in the distance travelled by the
beams.
At each of the facilities, a
laser shoots a 35 - watt infrared
beam through a Faraday isolator, which directs and polarizes the light.
Recording the energy of the electrons that passed
through the pulse generates a crisp side - profile of the short
laser beam, not unlike a sporting photo - finish image (see right).
In the other setting, the
laser beams slide
through and continue on their way towards the target chamber.
The energized atoms then emit photons as the weak
laser pulse passes
through the glass slabs, allowing the
laser beam to pick up trillions of extra photons.
The surprisingly simple device is operated from a shed in a field near Chicago, and consists of two powerful
laser beams that are directed
through tubes 40 metres long.
Lasers have long been at the heart of modern telecommunications because their intense light
beams can be chopped up to represent digital currency's 1s and 0s and can travel
through optical cables at light speed.
Accelerating electrons
through a series of these cavities allows the generation of an almost continuous X-ray
laser beam with pulses that are 10,000 times brighter, on average, than those of LCLS and arrive up to a million times per second.
But a
laser can set up a quantum - mechanical interference that blocks the electrons from making the jump, allowing a second
beam at the normally absorbed wavelength to zip
through.
This is an illustration of an electron
beam traveling
through a niobium cavity — a key component of SLAC's future LCLS - II X-ray
laser.
While another
laser beam detected the exact location of the cell membrane, they pushed the particle
through the pore with the tweezers.
A
laser beam passing
through a crystal can suddenly burst into a spray of light.
The research team from the Centre for Photonics and Photonic Materials, and the Centre for Nanoscience and Nanotechnology at the University of Bath, used a special white - light
laser built in - house and directed it
through several optical components to put a twist on the
beam.
As you can see, the
laser beam burns right
through the truck's hood, and then
through the engine, «defeating» the vehicle.
A series of
laser beams will run alongside all of the telescope's elements and into detectors, which will sense any vibrations the shock absorbers let
through.
But in this case, they first sent the
beam through a special spiral - shaped grating, which shaped the
laser beam in such a way that if you looked at it in cross-section, it would consist of concentric rings.
One way would have been to use an inflow of gaseous fluoride to coat the surface of the KMgF3 thin film, but instead the team discovered a safer route to fabricating it with pulsed
laser deposition — a way of layering thin films of chemicals onto surfaces
through irradiation with a focused
laser beam.
Conventional
lasers build their bright
beams by bouncing light back and forth between two mirrors and
through a block of material called the gain medium.
This is the case in Stupp's polymer, so a
beam of infrared
laser light (with wavelength 1068 nanometres) shone
through it will emerge in the green part of the spectrum with a wavelength of 534 nanometres.
The
beam passed
through a chamber where a
laser knocked the extra electrons off of about 7 % of the ions, leaving a mix of hydrogen and negatively charged hydrogen ions to react with each other farther down the tube.
To break this limit in crystal size, an extremely bright X-ray
beam was needed, which was obtained using a so - called free - electron
laser (FEL), in which a
beam of high - speed electrons is guided
through a magnetic undulator causing them to emit
laser - like X-ray pulses.
In the Rochester setup,
laser light was measured and then shunted
through a
beam splitter.
A water sample is placed inside the cylinder where it interacts with zinc ions, and a
laser light is
beamed into the object and onto the sample
through a small hole, Yakovlev explains.
When co-author Zhaoming Zhu, Gauthier's postdoctoral research associate, encoded information onto one of these
beams, the data could be imprinted on these newly created phonons and retained for 12 billionths of a second, long enough to be transferred back to light again by shining a third
laser through the fiber.
Laser beams shoot
through an ultrahigh vacuum tunnel in each arm.
But the cloak worked to perfection: Because the
laser passed
through the unlit gap, the color of the
beam didn't change.
The time lens combined the two techniques: It involved hitting a
beam of light with a
laser just as it passed
through a glass fiber, allowing considerable control over the
beam's speed.
The
laser is focused
through a lens with imperfections, such that the resulting
beam has pockets of darkness that can act as a trap.
Once created, each entangled pair of photons is separated by passing a
laser beam made up of them
through a filter made from a non-linear crystal.
They are now waiting for a new generation of giant interferometers that measure the time it takes a
laser beam to travel
through vacuum tubes several kilometres long.
But with our most powerful technology, she says, we could theoretically pack all the internet's contents into a message sent tens of thousands of light - years away
through a
laser beam — which means another civilization could do the same
Scientists and
laser experts have maintained that this superbeam could never work due to the properties of
lasers — theory says that rather than converging and combining their energy, the
beams would just pass
through one another.