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Indium phosphate is a direct gap III-V semiconductors with a band gap of 1.35 eV at room temperature. The absorption coefficient at 775 nm is 3.5 x 10 m2 A platelet sample 1 um thick is made with antireflection coated surfaces. Estimate the transmission of the sample at 620 nm. (Hint: The sample is antireflection coated, and so you may take reflectance as zero (R=0).)