The ar ion laser has a strong lasing emission at 488 nm. the laser tube is 1 m in length, and the bore diameter is 3 mm. the output power is 1 w. assume that most of the output power is in the 488 nm emission. assume that the tube end has a transmittance t of 0.1. calculate the photon output flow (number of lasing photons emitted from the tube per unit time), photon flux (number of lasing photons emitted per unit area per unit time), and estimate the order of magnitude of the steady state photon concentration (at 488 nm) in the tube (assume that the gas refractive index is approximately 1). (3 answers needed)