### Two prism compressor

Dispersion parameters of two-prism compressor/stretcher for given material and wavelength $$\lambda$$. Initial geometry (distances $$h$$ and $$w$$) is calculated using parameters of the reference beam (wavelength $$\lambda_0$$, prism separation $$L$$ and insertions $$l_1$$, $$l_2$$). Optionally, Brewster configuration can be chosen for any given reference wavelength. Output - double-pass GDD and TOD, distances $$\mathrm{P}_{AB}$$, $$\mathrm{P}_{BC}$$ and $$\mathrm{P}_{CD}$$, distance of the point of incidence and the second prism apex $$l_2(\lambda)$$, critical wavelength $$\lambda_\mathrm{c}$$, for which rays of $$\lambda<\lambda_\mathrm{c}$$ do not hit the surface of the second prism. Prism heights are infinite.

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