A carbon-dioxide laser emits infrared light encompassing a wavelength of around 10.6 meu*m.
i) Determine the length of a tube which will oscillate in m = 120000 mode? (Give answer in w/ units)
ii) Determine the frequency? (Give answer w/ units)
iii) Assume that a pulse of light bouncing backward and forward among the ends of the tube. Determine how many round trips will the pulse make in each second?