Acquisition of an IR Tunable Picosecond Laser System

本文提出用泵浦-探测方法对皮秒激光进行测量， 晶体、聚合物和玻璃态固体中的分子缺陷 在光谱的整个红外区域中， 可调谐皮秒激光系统。 调谐到红外线的能力 振动跃迁将使第一个系统性的 能量传递过程的研究，而整个固体 保持在电子基态。 请拨资金用于 康奈尔远红外实验室购买激光系统 其产生高强度红外脉冲， 从1.5微米到8微米可调。 该系统由一个 高能锁模钕钇铝石榴石 激光器，其部分输出频率加倍，用于 泵送一组皮秒染料激光台。 红外辐射 然后通过将染料激光器输出与基波混合来产生 Nd：YAG激光器在非线性晶体中的应用

It is proposed to make pump-probe picosecond measurements on molecular defects in crystalline, polymeric and glassy solids throughout the infrared region of the spectrum with an infrared- tunable picosecond laser system. The ability to tune to infrared vibrational transitions will make possible the first systematic investigation of energy transfer processes while the entire solid remains in the electronic ground state. Funds are requested for the Cornell Far Infrared Laboratory to purchase a laser system which generates high intensity infrared pulses with wavelengths tunable from 1.5 microns to 8 microns. This system consists of a high-energy mod-locked neodymium yttrium aluminum garnet (Nd:YAG) laser, part of whose output is doubled in frequency and used to pump a set of picosecond dye laser stages. Infrared radiation is then generated by mixing the dye laser output with the fundamental of the Nd:YAG laser in a nonlinear crystal.