In lasik surgery, a laser is used to reshape the cornea of the eye to improve vision. the laser produces extremely short pulses of light, each containing 1.0 mj of energy. part a in each pulse there are 9.7×1014 photons. what is the wavelength of the laser?

To solve this problem it is necessary to apply the related concepts laser pulse energy.

By definition the energy of a laser pulse in terms of number of photons is

Where,

Wavelength

N = Number of photons in each laser pulse

h = Planck constant

c = Speed of light

We need to find the wavelength, then re-arrange the equation we have

Converting the unit the energy from J to eV, we have

Replacing,

Therefore the wavelength of the laser is 182.4nm

Note: The Planck constant used is in units of eV.

a electromagnetic waves