Verstärkung einer He-Ne-Gasentladung für die Laserwellenlänge λ=6328 AE

The optical gain of He-Ne discharges for the laser wave-length of 6328 AE is investigated experimentally. The measurements are performed in two independent methods, which both give the same results. The gain of the He-Ne discharge is measured for a number of discharge tubes with different tube-lengthsl and tube-diametersD. The experiments show that the maximum gain? ₀ is a function of tube-length and-diameter:?G ₀(l,D) ?

$$hat G_0 (l,D) cong left[ {1 + 0,5left( {frac{{D_0 }}{D}} right)^{1,4} } right]^{{l mathord{left/ {vphantom {l {l_0 }}} right. kern-nulldelimiterspace} {l_0 }}} $$