Question
The laser system tested for inertial confinement can produce a 100-kJ pulse only 1.00 ns in duration. (a) What is the power output of the laser system during the brief pulse? (b) How many photons are in the pulse, given their wavelength is 1.06 μm? (c) What is the total momentum of all these photons? (d) How does the total photon momentum compare with that of a single 1.00 MeV deuterium nucleus?
1. $1.00 \times 10^{14}\textrm{ W}$
2. $5.34 \times 10^{23} \textrm{ photons / pulse}$
3. $3.34 \times 10^{-4}\textrm{ kg} \cdot \textrm{m/s}$
4. The total photon momentum is greater than the momentum of a deuterium nucleus by a factor of $1.02 \times 10^{16}$.
Solution Video