2results about How to "Reduce fluctuation" patented technology

This invention discloses a green laser, which includes a substrate, a lower confinement layer, a lower waveguide layer, an active layer, an upper waveguide layer, and an upper confinement layer stacked sequentially from bottom to top; the lower waveguide layer and the upper waveguide layer are several InN segregation suppression layers; the several InN segregation suppression layers include GaN and In a Ga 1‑a N, 0.01≤a≤0.4. Using the embodiments of the present invention, InN segregation is reduced, In composition fluctuations are decreased, the gain spectrum of the laser is narrowed, and the peak gain is increased. Simultaneously, the thermal stability of the high-In-composition quantum well in the green laser is improved, thermal degradation is reduced, the quality of the active layer and interface is improved, non-radiative recombination centers are reduced, optical catastrophes are eliminated, and the performance of the green laser is enhanced.

The utility model relates to the technical field of internal mixers, and discloses a novel internal mixer with uniform heating and cooling, which comprises a base, a turnover mechanism arranged at the left upper end of the base, a heating and cooling system arranged at the left end of the turnover mechanism, a mixing chamber arranged at the right end of the turnover mechanism, a sealing device arranged on the mixing chamber, and a heating and cooling system arranged at the right end of the mixing chamber. A main transmission system is arranged at the right end of the mixing chamber, a pneumatic control system is arranged at the top of the mixing chamber, a PLC electric control system is arranged on the right side of the pneumatic control system, a thermal resistor is arranged in the mixing chamber, and a rotor stirring shaft is arranged in the mixing chamber and located on one side of the thermal resistor. A graphite sealing ring is arranged at the end part of the rotor stirring shaft. The rotor stirring shaft adopts two different forms, the end face and the shaft diameter are sealed, powder leakage is avoided, a PLC control system is adopted, linkage control can be achieved with an upper banburying auxiliary machine and a lower banburying auxiliary machine, and the automation degree is higher.