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A desktop-size 10 TW laser




123splat

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Ten's of terawatts,,, cancer therapy,,,
O.K. if we fry the patient, there won't be anymore cancer....
 

KapHn8d

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interesting article... thanks for posting it up
 

Meatball

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Well... it seems to be more of an amplifier for a laser, to achieve a more reliable femtosecond generation - one without the very complex Ti:S cavity. In fact, there would be no cavity at all. Ti:S systems are VERY expensive for the results and reliability you get in return.

Think $150k+ for a new laser.

This amp could replace an expensive setup with a more reliable, simpler, and probably cheaper setup.
 
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Well... it seems to be more of an amplifier for a laser, to achieve a more reliable femtosecond generation - one without the very complex Ti:S cavity. In fact, there would be no cavity at all. Ti:S systems are VERY expensive for the results and reliability you get in return.

Think $150k+ for a new laser.

This amp could replace an expensive setup with a more reliable, simpler, and probably cheaper setup.

Ti:S as is sapphire? I was not aware that they reached those outputs, just that they were tunable.
 

SKeeZ

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looks cool planning to pick one up when I can afford it... never...
 

Devil_Master

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Typical sensationalistic story to impress n00bs. Let's put it back into perspective.
very short (femtosecond) laser pulses with a giant power of 10 terawatt
This means that if the pulse lasted 1 second, it would emit 1000000000000 joules of energy. But it doesn't. It lasts only 0.000000000000001 seconds, so it actually emits 1000000000000*0.000000000000001 = 0.001 joules of energy. That's the same amount of energy a 1mW keychain laser emits if it's left on for 1 second. I don't see that amount of energy treating any cancer. Next...
 
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wee40811

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Ti:S as is sapphire? I was not aware that they reached those outputs, just that they were tunable.

The way they do it is threw non-linear optics. They first expand the pulse into wider bandwidth and then they amplify across the whole band. Since the intensity is lower, it is easier to amplify without frying anything. After amplification they compress the beam into original bandwidth and the intensity of the resulting beam increases. The reason of using Ti-S is because it is tunable so it is easier for the amplifier to work with. I can't recall the specific Quantum Mechanics magic that happened during the whole process, but you can Google it and see how they expand the input pulse.
 




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