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" ... Beginning with a low-power laser pulse, you can stretch it, reducing its power, then amplify it, ... [+] without destroying your amplifier, and then compress it again, creating a higher-power, shorter-period pulse than would otherwise be possible. We have, as of the 2010s, transitioned from femtosecond (10^-15 s) lasers to attosecond (10^-18 s) laser physics. ... "
" ... Beginning with a low-power laser pulse, you can stretch it, reducing its power, then amplify it,... [+] without destroying your amplifier, and then compress it again, creating a higher-power, shorter-period pulse than would otherwise be possible. We have, as of the 2010s, transitioned from femtosecond (10^-15 s) lasers to attosecond (10^-18 s) laser physics. ... "
" ... His innovative new method uses a femtosecond oscillator to alter biochemical and biomechanical properties of collagenous tissue without causing cellular damage and tissue disruption. This technique allows for enough power to induce a low-density plasma within the set focal volume but does not convey enough energy to cause damage to the tissue within the treatment region. ... "