Acquisition of an IR Tunable Picosecond Laser System

获取红外可调谐皮秒激光系统

• 批准号: 9113243
• 负责人: Albert Sievers
• 金额: --
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-01 至 1992-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9113243&HistoricalAwards=false
• 关键词: Acquisition; IR; Tunable; Picosecond; Laser

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.

提议使用红外可调节的皮秒激光系统对整个光谱红外区域的结晶，聚合物和玻璃固体中的分子缺损进行泵探针探针测量。 调整红外振动过渡的能力将使能量传递过程的首次系统研究，而整个固体保持在电子基态处于电子基态。 要求为Cornell远红外实验室提供资金，以购买激光系统，该激光系统可产生高强度红外脉冲，波长可调从1.5微米到8微米。 该系统由高能量模型锁定的Neododmium Yttrium铝石榴石（ND：YAG）激光组成，其输出的频率增加了一倍，并用于泵送一组Picsecond染料激光阶段。 然后，通过将染料激光输出与非线性晶体中的ND：YAG激光的基础混合来产生红外辐射。