Semiconductor laser device with stable wavelength and manufacturing method thereof

The invention relates to a semiconductor laser device with a stable wavelength and a manufacturing method of the semiconductor laser device. The semiconductor laser device comprises a heat conduction substrate and a laser device body, the laser device body is installed in the heat conduction substrate, the front cavity face of the laser device body is flush with the end face of the heat conduction substrate, heat conduction glue is poured into the portion between the laser device body and the heat conduction substrate, and the height of the heat conduction glue is smaller than that of the front cavity face of the laser device body. The manufacturing method includes the steps that (1), the heat conduction substrate is manufactured; (2), the laser device body is installed in an installing hole of the laser device body of the heat conduction substrate, and the front cavity face of the laser device body is flush with the installing hole of the laser device body; (3), the heat conduction glue is poured into the space between the laser device body and installing hole of the laser device body, and the height of the heat conduction glue is smaller than that of the front cavity face of the laser device body; (4), the heat conduction glue is solidified. The semiconductor laser device is simple in structure, the manufacturing process is simple, heat of a chip of the laser device is dissipated through the heat conduction glue in time, particularly, heat of a rear cavity face is dissipated in time, the factor, of the wavelength change along with temperature, of the laser device can be reduced, wavelength shift of the laser device can be reduced by over 60%, and the wavelength stability is improved.