In laser eye surgery, each laser pulse has a power of 70 kW. The beam focuses on a circle of 0.47 mm radius. The laser beam intensity is _()_(_())_(_()) G(W)/(m)2.
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Sri K.
A laser used in LASIK eye surgery produces 55 pulses per second. The wavelength is 193 nm (in air), and each pulse lasts 10.0 ps. The average power emitted by the laser is $120.0 \mathrm{mW}$ and the beam diameter is $0.80 \mathrm{mm}$. (a) What is the total energy of a single pulse? (b) What is the intensity during a pulse?
A LASIK vision correction system uses a laser that emits 10-ns-long pulses of light, each with 2.4 mJ of energy. The laser is focused to a 0.80-mm-diameter circle. (Please be watch for proper units) (a) What is the average power of each laser pulse? kW (b) What is the electric field strength of the laser light at the focus point? N/C
Adi S.
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