一种新型结构的Nd∶YAlO_3双波长调Q脉冲激光器  

A NEW CONFIGURATION OF THE LASER CAVITY FOR SIMULTANEOUS DUAL WAVELENGTH Q SWITCH PULSED Nd∶YAlO 3 LASER 

作　　者：林文雄[1] 沈鸿元[1] 

机构地区：[1]中国科学院福建物质结构研究所

出　　处：《物理学报》1999年第4期667-672,共6页Acta Physica Sinica

基　　金：福建省自然科学基金

摘　　要：从Ｎｄ∶ＹＡｌＯ３（Ｎｄ∶ＹＡＰ）的双波长速率方程出发，提出了一种新型的腔型，使两种波长的运行腔长与其跃迁截面成正比．在这种条件下使得两种波长的竞争能力相同，从而可以实现双波长调Ｑ脉冲在能量积分最大值时两种波长脉冲峰峰值同步，而且做为双波长最佳输出判据的两波长光子密度乘积的积分值比采用其它方法约大一个量级．Abstract Based on the rate equations of the Q Switch simultaneous dual wavelength laser (SDWL) of Nd∶YAlO 3 (Nd∶YAP), we have developed a new configuration of the cavity by adjusting the ratio of the cavity lengths for lasers with different wavelengths according to their emission cross sections. Therefore the competition ability and the net gain for the two different wavelengths will be equal at any time and anywhere in the laser rod, and the optimal spatial and temporal overlap of the different wavelengths can be easily realized for optimal sum frequency mixing. Besides, this configuration can overcome several disadvantages of the previously used configurations, and its photon density product integral of the two different wavelengths is about one order larger than the previous ones.

关 键 词：调Q脉冲 激光器 ND:YAP 速率方程模型 

分 类 号：TN248.34[电子电信—物理电子学]