Damped Harmonic Oscillator

The amplitude and phase response of a damped harmonic oscillator

eqm=1/Sqrt[(w^2-w0^2)^2+4 lam^2 w^2]
eqp=ArcTan[-(w^2-w0^2),-2 lam w]
pp={PerformanceGoal->"Quality",ImageSize->Medium};
Manipulate[GraphicsGrid[{{Plot[eqm/.{w0->1,lam->10^llambda},{w,0.1,10},PlotRange->Full, Evaluate[pp]],LogLogPlot[eqm/.{w0->1,lam->10^llambda},{w,0.1,10},PlotRange->Full, Evaluate[pp]]},{Plot[eqp/.{w0->1,lam->10^llambda},{w,0.1,10},PlotRange->Full, Evaluate[pp]],LogLinearPlot[eqp/.{w0->1,lam->10^llambda},{w,0.1,10},PlotRange->Full, Evaluate[pp]]}}],{{llambda,-1, "Log10 λ"},-2,0,0.1}]