【摘要】 报道了掺钛蓝宝石晶体激光放大实验研究，实验中得到最大的单程放大和双程放大增益分别为１４．７６和２６．３１，对应双程放大的增益系数为１．８１ｃｍ－１，并由此推算出掺钛蓝宝石晶体的增益截面为２．７４×１０－１９ｃｍ２，饱和能量密度为０．９３Ｊ／ｃｍ２．并给出不同的泵浦能量密度所对应的最佳放大介质长度。实验表明小信号近似下，放大增益只与泵浦功率密度有关．与注入种子能量无关。实验还测量了掺钛蓝宝石晶体对不同波长种子光的放大增益。更多还原

【Abstract】 A small-signal single-pass power gain of 14. 76 and double-pass power gain of26. 31 have been measured for a Ti: sapphire amplifier. The results correspond to thesmall-signial gain coefficient being 1.81 cm-1 and the gain cross section being 2. 74×10-19cm2. The small- siginal gains for different wavelengths have been obtained. Thesaturation fluence and optimum length of Ti: sapphire have been calculated.更多还原