An improved transmitting multi-layer thin-film filter

Zhang Ying^a),^b), Qi Hong-Ji^a), Yi Kui^a), Wang Yan-Zhi^a), Sui Zhan^c), Shao Jian-Da^a)†

Schematic diagram of the experimental setup, where M is the reflector mirror; sample 1 is the long wave-pass cutoff filter, and sample 2 is the short wave-pass cutoff filter.