A light emitting apparatus includes: a submount including a mounting face and an end face, and the end face having an upper edge apart from a front edge of the mounting face; and a quantum cascade laser disposed on the front edge and the mounting face. The quantum cascade laser includes: a laser structure having first, and second faces; a first electrode on the first face; a second electrode on the second face; and a reflecting structure on a first end face of the laser structure. The reflecting structure includes an insulating film having a first end on the first face and a second end on the second face, and a metal film having a first end on the first face, and a second end on the second face. The insulating film is disposed between the laser structure and the first end and the second end of the metal film.