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在对撞脉冲锁模NdYAG激光器产生的1.064μm超短红外脉冲激光激励下,采用参考光和测量光同时入射的测量方案,利用一台可见光条纹相机进行了电子俘获材料CaSEu,Sm的红外最小可激发阈值的研究,结果表明:在可见光条纹相机最小可探测能量密度Jmin=8.3×10-10J/mm2的条件下,测得电子俘获材料CaSEu,Sm的红外最小可激发阈值优于4.8×10-9J/mm2。
Under the excitation of a 1.064μm ultra-short infrared pulsed laser generated by a collisional impulse-mode-locked NdYAG laser, the measurement scheme of simultaneous incidence of reference light and measurement light was adopted. The visible light streak camera was used to conduct the electron capture material CaSEu, The results show that under the condition of visible light streak camera minimum detectable energy density Jmin = 8.3 × 10-10J / mm2, the infrared minimum excitable threshold of CaSEu and Sm is better than 4 .8 × 10-9J / mm2.