Problem 2: Calculate the absorption coefficient and thickness for 50% absorption given the complex refractive index for BK7 at wavelengths [0.5, 1.0, 1.5, 2.0, 2.5] microns is n=[1.5214, 1.5075, 1.5013, 1.4945, 1.4860] and k=[9.5781e-9, 9.9359e-9, 9.2757e-8, 1.3635e-6, 8.13e-6]. Make a table of your results.