Purchase of a Picosecond Laser System

根据化学研究仪器和设施（CRIF）计划的这份合同，加州大学欧文分校化学系将获得皮秒激光系统。该设备将加强以下领域的研究：1)石墨和硅外延量子点的寿命测量；2)不对称金属纳米粒子二聚体的二次谐波产生；3)用于大气化学和医学的超灵敏微量气体探针；液氦液滴的电离解离动力学；血红蛋白中氧化还原中间体的光生成；6)光致发光超分子和聚合物体系；7)钇和镧系金属配合物的合成和化学。皮秒激光器提供相干可见光或红外光的超快脉冲，使研究人员能够获得快速发生的化学反应的重要信息。它的使用可能使我们对反应性和非反应性分子性质的理解取得突破。

With this award from the Chemistry Research Instrumentation and Facilities (CRIF) Program, the Department of Chemistry at the University of California in Irvine will acquire a picosecond laser system. This equipment will enhance research in the following areas: 1) lifetime measurements for epitaxial quantum dots on graphite & silicon; 2) second harmonic generation from assymetric metal nanoparticle dimers; 3) an ultra sensitive probe for trace gases with applications in atmospheric chemistry and medicine; 4) ionization and dissociation dynamics in liquid helium droplets; 5) photogeneration of redox intermediates in hemeproteins; 6) photoluminescent supramolecular and polymeric systems; and 7) synthesis and chemistry of yttrium and lanthanide metal complexes.A picosecond laser provides ultrafast pulses of coherent visible or infrared light, which enables researchers to obtain important information about fast occurring chemical reactions. Its use may enable breakthroughs in our understanding of the properties of reactive and nonreactive molecules.