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Engineers Ride 'Rogue' Laser Waves to Build Better Light Sources
A freak wave at sea is a terrifying sight. Seven stories tall, wildly unpredictable, and incredibly destructive, such waves have been known to emerge from calm waters and swallow ships whole. But rogue waves of light -- rare and explosive flare-ups that are mathematically similar to their oceanic counterparts -- have recently been tamed by a group of researchers at the University of California, Los Angeles (UCLA).
UCLA's Daniel Solli, Claus Ropers,tory burch sandals, and Bahram Jalali are putting rogue light waves to work in order to produce brighter,monster headphones, more stable white light sources, a breakthrough in optics that may pave the way for better clocks,tennis rackets - fit cut,ghd outlet,Tods - H&amp, faster cameras, and more powerful radar and communications technologies. Their findings will be presented during the Optical Fiber Communication Conference and Exposition/National Fiber Optic Engineers Conference (OFC/NFOEC), taking place March 22-26 in San Diego.
Rogue bursts of light were first spotted a year ago during the generation of a special kind of radiation called supercontinuum (SC). SC light is created by shooting laser pulses into crystals and optical fibers. Like the incandescent bulb in a lamp, it shines with a white light that spans an extremely broad spectrum. But unlike a bulb's soft diffuse glow,cheap coach bags, SC light maintains the brightness and directionality of a laser beam. This makes it suitable for a wide variety of applications -- a fact recognized by the 2005 Nobel Prize in Physics, awarded in part to scientists who used SC light to measure atomic transitions with extraordinary accuracy.
Despite more than 40 years of research, SC light has proven to be difficult to control and prone to instability. Though rogue waves are not the cause of this instability, the UCLA researchers suspected that a better understanding of how noise in SC light triggers rogue waves could improve their control of this bright white light. Rogue waves occur randomly in SC light and are so short-lived that the team had to employ a new technique just to spot them. Although they are rare, they are more common than would be predicted by a bell curve distribution, governed instead by the same "L-shaped" statistics that describe other extreme events like volcanic eruptions and stock market crashes.
By tinkering with the initial laser pulses used to create SC light, Solli and his team discovered how to reproduce the rogue waves,ugg matala sandal -t seem to make any difference that Lohan wasn’, harness them, and put them to work. His results, to be presented at OFC/NFOEC 2009, demonstrate that a weak burst of light,discount ghd straighteners, broadcast at the perfect "tickle spot," produces a rogue wave on demand. Instead of disrupting things, it stabilizes SC light, reducing fluctuations by at least 90 percent. The seed wave also decreases the amount of energy needed to produce a supercontinuum by 25 percent. The process, says Solli, is similar to boiling water. "If you heat pure water, it can boil suddenly and explosively," he says. "But normal water has nucleation sites for bubble formation that -- like our seed waves stimulate the supercontinuum -- help the water boil smoothly with less heat."

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Reprinted from 64426711 at 22:08 on March 7, 2007 Reading (loading. ..) Comments (0) Category: Emotional World ? world there is always some kind of weird thing to love it to. . . . . .
Sometimes when you love a person,倾诉``我必须倾诉``` - Qzone日志, you will think of him all the time figure,
When you're alone, will want to stay by your side is his.
if it is unrequited love, then the less daring people will look at him secretly hide,
, ah and so on. . . . Will give up until the last, such a person really, silly.
perhaps journeying in return is just waiting for disappointment, but it also has to wait,
each other like him in that moment, and I feel really fly to heaven,
if not afraid of monsters, just because a loved one love you.
but that are in love when the mind will think so.
we all will not believe that perfect love will not happen to them,
have to split up the brain in love hormone receded,
before they began to think of memories, good and bad memories.
hope you are good and which side, rather than grew more and more hate.
after breaking up, people will find reason, a reasonable reason for not hurtful.
But in fact, we could not, because. . . . . .
whatever reason, the same injury.
But the worst is you love to finally find the person you love do not love you,
all the sweet memories of the past will be an instant crash.
when parted, wishing each other happiness is very gracious,
But when the other still loves you, the phrase would hurt his injury deeper;
if you add: For you, I have to see it opened,
other heart-breaking voice,Manager ~~~~~~~ - Qzone log, you can not hear.
Some people will ask to be friends, maybe both sides can comply.
happens is that some people can not, her friends said: then be submitted to one, will be able to forget him. That said, it is not easy to do.
But it is undeniable that: to the end of the world, when you do not necessarily love to accompany you around is that you, with you, perhaps, is for you, not love you.
But this is perhaps
... or find someone who has love, for themselves and to you, he left a love you do not own is the most sensible choice ...
experience something, the people grow up, will be more understanding of things; the experience of a relationship, will know how to love.
left the living is happiness, the passage is called regret.
is the sweet taste of happiness, and occasionally sour; Unfortunately,Was clear the wind passing - Qzone log, the feeling is hard, and occasionally show tonight.
treat the people around you, we can be together is happiness.
once in a lifetime should be vigorous about love, whatever the results are not together.
loved people understand what this life is not indiscriminately ~ ~!
think more for each other, do not let the people around you know what to do, especially people who love you ....
world, the best love is the silence of a person's pay when the brave.
even if they are injured severely, but also no regrets.
a woman, the lifetime can be a deeply loved this man, what a blessing it?
or ... a woman, the lifetime of a deep love for his missing men, what a pity it?
If you fall in love, do not easily let go the opportunity.
rash, it may make you regret it for a while; cowardice, but it may make you a lifetime regret.
did not experience the love of life is not complete without experiencing the pain of love is not profound.
Love makes life rich, suffering the sublimation of love