Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Quantum lasers: Half light, half matter
New Scientist ^ | 4/7/09 | Richard Webb

Posted on 04/08/2009 2:16:42 PM PDT by LibWhacker

A new kind of laser could mean cheaper gadgets for all

Lasers might be pushing 50, but they are still the youthful pin-ups of fundamental physics. Since the first one was unveiled in 1960, the more apocalyptic predictions of how they might be used - as death rays, for example - have proved to be overblown. Their peaceful application, on the other hand, can be seen everywhere from cutting and welding to combating cancer and cataracts, to powering telecoms and consumer electronics, and has mushroomed into an industry worth $6 billion in 2007. Advances in the laser lab translate into gadgets in our homes at astonishing speed: think of the progression from CD to DVD and now Blu-ray technology in just a few decades.

(Excerpt) Read more at newscientist.com ...


TOPICS: Science
KEYWORDS: alllasersarequantum; exciton; lasers; polariton; quantum; stringtheory; theonlykindthereis

1 posted on 04/08/2009 2:16:43 PM PDT by LibWhacker
[ Post Reply | Private Reply | View Replies]

To: LibWhacker
death rays, for example - have proved to be overblown. Their peaceful application, on the other hand, can be seen everywhere from cutting and welding

It's all in the application. Take those lasers that are used for cutting and welding and point them at someone, and bam, you have a death ray.

2 posted on 04/08/2009 2:19:47 PM PDT by mnehring
[ Post Reply | Private Reply | To 1 | View Replies]

To: mnehring

A big honkin plasma cutter would be a whole lot more fun, not to mention pretty.


3 posted on 04/08/2009 2:21:08 PM PDT by cripplecreek (The poor bastards have us surrounded.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: mnehring
"What do you expect me to do, Goldfinger?"

"I expect you to die, Mr. Bond."

4 posted on 04/08/2009 2:33:20 PM PDT by Billthedrill
[ Post Reply | Private Reply | To 2 | View Replies]

To: mnehring

I recently toured a Harley Davidson factory and was impressed at how fine, precise and fast their lasers could cut sheet metal.


5 posted on 04/08/2009 2:35:38 PM PDT by posterchild (Endowed by my Creator with certain unalienable rights.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: ShadowAce

.


6 posted on 04/08/2009 2:35:53 PM PDT by KoRn
[ Post Reply | Private Reply | To 1 | View Replies]

To: cripplecreek; humblegunner; Eaker

You know, I think we need to get Humblegunner and Eaker to get one of those and play around with it in the back yard.. you know, education for when the SHTF as an alternate defense mechanism.


7 posted on 04/08/2009 2:37:27 PM PDT by mnehring
[ Post Reply | Private Reply | To 3 | View Replies]

To: Billthedrill
James Bond: "Do you expect me to talk?"

Auric Goldfinger: "No, Mr. Bond. I expect you to die."

8 posted on 04/08/2009 2:52:43 PM PDT by Steely Tom (RKBA: last line of defense against vote fraud)
[ Post Reply | Private Reply | To 4 | View Replies]

To: Steely Tom

THAT’s it! Memory cells gittin’ a little old...


9 posted on 04/08/2009 2:56:26 PM PDT by Billthedrill
[ Post Reply | Private Reply | To 8 | View Replies]

To: LibWhacker

QCLs are us. Really useful functional ones are at least a decade away. They have seen lasing but 1959 had the MASER followed shortly by the LASER. but commericially viable and useful ones weren’t available even for OEM use until the 80s


10 posted on 04/08/2009 3:02:25 PM PDT by the long march
[ Post Reply | Private Reply | To 1 | View Replies]

To: Billthedrill
It was a long time ago.

1963. 45 years. I was in third grade. Skate boards were the big thing in my neighborhood, as they were in every other neighborhood in America, I guess.

I heard about this new James Bond movie called Goldfinger from other kids. They said there was a naked lady in it, encased in gold. Someone said she was dead. Others said she was alive.

I asked my best friend about it. He said he didn't know, but that it was rated "C," which meant "condemned," and therefore he would never watch it. That was good enough for me; I knew right then and there that I didn't want to watch it either.

Long time ago, as I said.

11 posted on 04/08/2009 3:03:54 PM PDT by Steely Tom (RKBA: last line of defense against vote fraud)
[ Post Reply | Private Reply | To 9 | View Replies]

To: mnehring

Not really. EIther you don’t understand lasers or you don’t understand human physiology


12 posted on 04/08/2009 3:04:06 PM PDT by the long march
[ Post Reply | Private Reply | To 2 | View Replies]

To: Steely Tom

remember the original james bond ‘cards’? each card had a black and white image of a scene from one of the first 3 movies and they were traded endlessly like MLB cards. long time ago.


13 posted on 04/08/2009 3:31:15 PM PDT by bobby.223
[ Post Reply | Private Reply | To 11 | View Replies]

To: AdmSmith; bvw; callisto; ckilmer; dandelion; ganeshpuri89; gobucks; KevinDavis; Las Vegas Dave; ...
Merely of interest. :')

Cat Physicist
· View or Post in 'blog · Join · Bookmark · List topics · Google ·

14 posted on 04/08/2009 4:00:41 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/____________________ Profile updated Monday, January 12, 2009)
[ Post Reply | Private Reply | To 1 | View Replies]

To: LibWhacker

**somebody** had to post it.

15 posted on 04/08/2009 4:01:38 PM PDT by martin_fierro (< |:)~)
[ Post Reply | Private Reply | To 1 | View Replies]

To: neverdem; SunkenCiv; Ernest_at_the_Beach; SuperLuminal; Wonder Warthog; Fred Nerks; ...
Like, *PING*, dudes.

Cheers!

16 posted on 04/08/2009 4:50:44 PM PDT by grey_whiskers (The opinions are solely those of the author and are subject to change without notice.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: bobby.223
remember the original james bond ‘cards’? each card had a black and white image of a scene from one of the first 3 movies and they were traded endlessly like MLB cards. long time ago.

I have a very vague memory of those. I have a much better memory of Monkees cards. You collected all of them and the image fragments on their backs made a poster.

17 posted on 04/08/2009 5:21:49 PM PDT by Steely Tom (RKBA: last line of defense against vote fraud)
[ Post Reply | Private Reply | To 13 | View Replies]

To: grey_whiskers

Thanks for the ping.


18 posted on 04/08/2009 6:37:46 PM PDT by Ernest_at_the_Beach (Support Geert Wilders)
[ Post Reply | Private Reply | To 16 | View Replies]

Nothing can defeat the Quad Laser.


19 posted on 04/08/2009 6:45:24 PM PDT by Constitution Day
[ Post Reply | Private Reply | To 1 | View Replies]

To: grey_whiskers

thanks, bfl


20 posted on 04/08/2009 6:54:30 PM PDT by neverdem (Xin loi minh oi)
[ Post Reply | Private Reply | To 16 | View Replies]

To: Steely Tom
"1963. 45 years. I was in third grade"

Heck. I was in third grade before WWII started. That's why I remembered it as SilverFinger and that a "C" rating meant it was a "commie" movie.

21 posted on 04/08/2009 8:30:09 PM PDT by SuperLuminal (Where is another agitator for republicanism like Sam Adams when we need him?)
[ Post Reply | Private Reply | To 11 | View Replies]

To: SuperLuminal
Heck. I was in third grade before WWII started. That's why I remembered it as SilverFinger and that a "C" rating meant it was a "commie" movie.

Uhhh... Hmmm.

Did you work on something during the war that involved large amounts of silver and was of intense interest to the commies?


22 posted on 04/09/2009 3:21:32 PM PDT by Steely Tom (RKBA: last line of defense against vote fraud)
[ Post Reply | Private Reply | To 21 | View Replies]

To: Steely Tom
"Uhhh... Hmmm.

Did you work on something during the war that involved large amounts of silver and was of intense interest to the commies?

...during the war cold war......{:-)

23 posted on 04/09/2009 4:30:40 PM PDT by SuperLuminal (Where is another agitator for republicanism like Sam Adams when we need him?)
[ Post Reply | Private Reply | To 22 | View Replies]

To: LibWhacker
This creates yet more excitons which produce more resonant light waves and so on, until energy begins to cycle between light and matter so fast - in just a few trillionths of a second - that according to the rules of quantum physics it becomes impossible to tell in which of the two states it is stored.

If it doesn't light, does it matter?

(Sorry. Couldn't help it.)

24 posted on 04/11/2009 12:00:02 PM PDT by FreeKeys ("Governments have killed more people than cigarettes or unbuckled seatbelts ever have."- PJ O’Rourk)
[ Post Reply | Private Reply | To 1 | View Replies]

To: LibWhacker

‘Turn on your half-light’


25 posted on 04/11/2009 12:05:45 PM PDT by MHGinTN (Believing they cannot be deceived, they cannot be convinced when they are deceived.)
[ Post Reply | Private Reply | To 1 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson