Experimental study of the intensity fluctuations of single-frequency He?Ne lasers at 0.63 and 3.39 ?

On natural fluctuations of the intensity of a He?Ne laser operating at a wavelength of 1.15 ?

“…In conclusion let us plot the graph of M~ as a function of F (Fig. 3) for an He-Ne laser at wavelengths of 0.63 p (curve 1), 1.15 # (curve 2), and 3.39 # (curve 3) for values of power P respectively equal to 15, 10, and 10 #W. The data for wavelengths of 0.63 and 3.39 # were taken from [6]. This figure showed that the spectra of the intensity fluctuations of a one-frequency laser at X = 1.15, 0.63, and 3.39 # are of an analogous character.…”