A TE gas laser contains a gas contour with the following elements arranged in succession: a discharge gap formed by two elongated electrodes; a diffuser; a heat exchanger; a cross-flow fan; and an additional converging channel, the inlet opening of which is situated on the discharge side of the fan, while the outlet opening is oriented towards the fan impeller on the intake side of the fan. The proposed technical solution makes it possible to produce a compact TE gas laser with a high pulse repetition rate.