Figure 34

Figure 34: Examples of the sum quantum noise spectral densities of the classically-optimized (ϕLO = π∕2, 𝜃 = 0) resonance-tuned interferometer. ‘Ordinary’: J = JaLIGO, no squeezing. ‘Increased power’: J = 10JaLIGO, no squeezing. ‘Squeezed’: J = JaLIGO, 10 dB squeezing. For all plots, γ = 2π × 500 s−1 and ηd = 0.95.