Low-power AlGaInP red light semiconductor laser with superlattice electron barrier layer and preparation method of low-power AlGaInP red light semiconductor laser
An electronic blocking layer and superlattice technology, applied in the field of optoelectronics, can solve the problems of large light absorption, no stress compensation involved, and low slope efficiency, etc., and achieve the effects of increasing optical gain, reducing heat generation, and improving slope efficiency
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[0080] Example 1
[0081] Preparation method of a small power AlGaInP red light semiconductor laser having a superlattice electron barrier layer, comprising the following steps:
[0082] S1, place the GaAs substrate in the MOCVD device growth chamber, H 2 Heat up to 720± bake at 10°C and add AsH 3 , the surface heat treatment of gaAs substrates;
[0083] S2, the temperature is slowly reduced to 680± 10 °C, the cooling rate is not higher than 30 °C / min, through TMGa and AsH 3 , a GaAs buffer layer is grown on a GaAs substrate; the doping source of the GaAs buffer layer is Si 2 H 6 The doping concentration of si atoms is 2×10 18 atoms / cm 3 The thickness of the GaAs buffer layer is 0.2 μm.
[0084] S3, keep the temperature at 680± 10 °C, into ph 3 , by aborting access to AsH 3 And TMGa achieved a growth pause in the GaAs buffer layer, stopping for 5 seconds, and depleting the As atoms in the reaction chamber.
[0085] S4, which maintains the temperature at 680± 10 °C, passes into TMG...
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[0100] Example 2
[0101] Preparation method of a small power AlGaInP red light semiconductor laser having a superlattice electron barrier layer, comprising the following steps:
[0102] S1, place the GaAs substrate in the MOCVD device growth chamber, H 2 Heat up to 720± bake at 10°C and add AsH 3 , the surface heat treatment of gaAs substrates;
[0103] S2, the temperature is slowly reduced to 680± 10 °C, the cooling rate is not higher than 30 °C / min, through TMGa and AsH 3 , a GaAs buffer layer is grown on a GaAs substrate; the doping source of the GaAs buffer layer is Si 2 H 6 The doping concentration of Si atoms is 2.5×10 18 atoms / cm 3 The thickness of the GaAs buffer layer is 0.15 μm.
[0104] S3, keep the temperature at 680± 10 °C, into ph 3 , by aborting access to AsH 3 And TMGa achieves a growth pause of the GaAs buffer layer, a pause of 10 s, and depletes the As atoms in the reaction chamber.
[0105] S4, which maintains the temperature at 680± 10 °C, passes into TMGa, TM...
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