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在激光功率密度为4.0×108~5.0×109Wcm-2的范围内,用冲击摆测量了NdYAG脉冲激光(波长为1.06μm,脉宽为10ns)辐照大气中不同面积的HgCdTe样品时的冲量耦合系数。从理论上建立了等离子体爆轰模型,对激光结束后等离子体的膨胀过程进行了比较详细的描述,用此模型计算了不同能量的脉冲激光与不同面积的HgCdTe相互作用时的冲量耦合系数,计算值与测量值符合得较好。
In the range of the laser power density of 4.0 × 108 ~ 5.0 × 109Wcm-2, NdYAG pulsed laser (wavelength of 1.06μm, pulse width of 10ns) was used to irradiate HgCdTe Impulse coupling coefficient for samples. The plasma detonation model was established theoretically and the plasma expansion process was described in detail. The impulse coupling coefficient of different energy pulsed laser with different area of HgCdTe was calculated by this model. The calculated value is in good agreement with the measured value.