Alongside this research work in his own institute, Pohl collaborated with his scientific colleagues in a variety of ways. With the zoologist Alfred Kühn, he investigated the color perception of bees; for the chemist Adolf Windaus, he applied optical spectroscopy to the separation of Ergosterol from Cholesterol. He helped the archeologist to photograph antique vases without disturbing highlights. He gave active support to his student Hans Joachim Pabst von Ohain when the latter began the first experiments on jet propulsion following completion of his doctoral thesis, in the Physics Institute but privately financed.