2. A light source has energy distributed in the range of the wavelength from λ = 600 to 600.018 nm and contains many fine spectral lines. The minimum interval of two fine spectral lines is λ = 6 x 10-4nm. In order to fully analyze this light source using a spectrometer with a fixed Fabry- Perot (FP) etalon (as shown in Slide 13 of Lecture 12), ask: a) What is the maximum separation distance of this FP etalon (L)? b) If two FP etalons have the same separation distance, but different reflectance R₁ = 0.89 and R₂ = 0.92, respectively, please compute resolving power of two FP etalons and determine which one can be used in this application.

2. A light source has energy distributed in the range of the wavelength from λ = 600 to 600.018 nm and contains many fine spectral lines. The minimum interval of two fine spectral lines is λ = 6 x 10-4nm. In order to fully analyze this light source using a spectrometer with a fixed Fabry- Perot (FP) etalon (as shown in Slide 13 of Lecture 12), ask: a) What is the maximum separation distance of this FP etalon (L)? b) If two FP etalons have the same separation distance, but different reflectance R₁ = 0.89 and R₂ = 0.92, respectively, please compute resolving power of two FP etalons and determine which one can be used in this application.