He-Ne lasers are often used in physics demonstrations. They produce light of wavelength 633 nm and a power of 0.500 mW spread over a cylindrical beam 1.30 mm in diameter (although these quantities can vary).
a) What is the intensity of this laser beam? (answer in W/m2)
b) What is the maximum value of the electric field? (answer V/m)
c) What is the maximum value of the magnetic field? (answer in mT)
d) What is the average energy density in the laser beam? (answer in J/m3)