New uncooled injection heterolaser emitting in the 1.5–1.8 μ range

A double sided Al_xGa_1–xSb_1–yAs_y–GaSb–Al_xGa_1–xSb_1–yAs_y heterostructure was used in an injection laser which emitted stimulated radiation of 1.5–1.8 μ wavelengths at room or lower temperatures. The threshold current density was 220 A/cm² at 77°K and 6.2 kA/cm² at 300°K.