The invention belongs to the technical field of
laser, and particularly discloses a high-efficiency
laser chip of a direct pumping light-emitting layer and a
laser, and the laser
chip comprises a substrate layer, an integrated
broadband reflector, an integrated active region, a window layer and a
protection layer which are sequentially arranged. The integrated
broadband integrated active area comprises a plurality of active groups, each
active group comprises spacing
layers and light-emitting
layers, and the spacing
layers and the light-emitting layers are alternately arranged; after the light-emitting layer absorbs
photon energy of pump light, a carrier at the top of a material
valence band of the light-emitting layer is excited to a material sub-
energy level of the light-emitting layer and then relaxed to the bottom of a material
conduction band of the light-emitting layer, and stimulated
radiative transition is generated in the light-emitting layer. According to the invention, the light-emitting layer of the active area can be directly pumped, so that the
wavelength of the pumping
light source required by the laser
chip is close to the laser
wavelength, thereby greatly improving the light-
light conversion efficiency of the chip, reducing the
quantum loss in the laser
generation process, reducing the
waste heat in the laser chip, relieving the
heat effect of the laser, and improving the production efficiency of the laser chip. The output power of the laser is improved.