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采用金属有机化合物气相淀积(MOCVD)方法成功地研制了具有两对梯度折射率(GRIN)异质结构的InGaAs/AlGaAs应变双量子阱激光器。该器的波长为970-982nm,室温连续工作阈值电流密度为140A/cm^2,工作在0.9A时单面连续输出光功率为520mW,工作在2.0时,连续输出光功率为1.49W,最高功率可达2.4W,微分量子效率高达0.83W/A。 相似文献
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It has been proved by ab initio calculation and theoretical analysis that there exist [N2]2--N2 molecular dimers with D2h symmetry group, and there also exists an electric dipole excimer-like transition a1B2g→a1B3u. The theoretical spectra accord with the experimental results for transition a1B2g→a1B3u. The stimulated emission characteristic of N2 molecular dimer was researched through the microwave excited highly pure nitrogen and the method of amplified spontaneous emission. The experimental results show that N2 molecular dimer has stimulated emission characteristics when the microwave power is more than 100 W and the N2 pressure is in the range from 260 Pa to 2200 Pa. 相似文献
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