Output power versus tuning curves

Output power versus tuning curves for single-frequency gas lasers 

The power dip predicted by Lamb was soon confirmed experimen- 

Output power versus frequency curves are shown in 

Ne and results are given for several discharge input power levels. (After Szoke and Javan (1963).) 

Simple theory of the Lamb dip. The Lamb dip is another example of the saturation effects which occur in in-, homogeneously-broadened laser transitions. The theoretical basis of these effects was discussed in section 13.4 for the case of a travelling wave laser. However, in the case of a single-frequency laser oscillator it is necessary to modify the last term in both equation (13.21) and equation 

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FIGURE 5.2 (a) Experimental (filled circles) wavelength tuning curve and accessible Raman freqnencies as a fnnction of the crystal temperatnre. The solid curves are a result of the calculations. (b) OPO output power versus pump power at the crystal facet (c) and (d) show the typical signal pulse spectrum and autocorrelation trace at the OPO cavity detuning of minus 36 (xm, respectively. 

Fig. 3.6 Observation of an inverted Lamb dip in a He-Ne laser at 3.39 /xm with an intracavity CH4 absorbing cell. Output power versus laser-cavity tuning, with double scan. The saturated absorption peak has an amplitude of about 2% with a 400 kHz width, and is nicely centered on the °Ne Doppler gain curve. (Reprinted from Barger and Hall 1969, with courtesy and permission of the American Physical Society.)...

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