Acquisition of Tunable Narrow-line Laser for Photonic Band Gap and Disordered Materials Research and Education

这是由主要研究仪器项目和材料研究仪器项目授予纽约城市大学皇后学院的仪器采购奖。该合同将允许纽约州立大学皇后学院购买一台相干899-29 AutoSCAN II单频扫描激光器，用于研究随机和近周期材料和光子器件中的光传播统计。该仪器将使主要研究人员能够将在光谱的微波区域开发的相干技术扩展到可见光和红外频率。这将使他们能够利用透射场和强度的统计测量来表征传输的统计数据，并使用强度起伏的方差作为确定的声子局部化测试，而不是由于吸收微波共振而产生的模糊。对胆甾型液晶的带边和局域模式进行了表征。其目的是阐明激光与局域化的关系，指导具有超低激光阈值的均匀胆甾相材料的发展。该仪器将为准备从事物理学职业的学生提供微波和光学技术的完美结合，以及接触从事前沿研究的工业研究实验室。这是由主要研究仪器项目和材料研究仪器项目授予纽约城市大学皇后学院的仪器采购奖。该合同将允许纽约州立大学皇后学院购买一台相干899-29 AutoSCAN II单频扫描激光器，用于研究随机和近周期材料和光子器件中的光传播统计。该仪器将使主要研究人员能够将在光谱的微波区域开发的相干技术扩展到可见光和红外频率。该仪器将为准备从事物理学职业的学生提供微波和光学技术的完美结合，以及接触从事前沿研究的工业研究实验室。

This is an instrument acquisition award from the Major Research Instrumentation program and the Instrumentation for Materials Research program to the City University of New York Queens College. The award will allow CUNY Queens College to purchase a Coherent 899-29 Autoscan II single frequency scanning laser for the study of the statistics of optical propagation in random and nearly periodic materials and photonic devices. The instrument will allow the principal investigators to extend the coherent technique developed in the microwave region of the spectrum to visible and infrared frequencies. It will allow them to characterize the statistics of transport using statistical measures of the transmitted fields and intensity, and to use the variance of intensity fluctuations as a sure test of phonon localization free of ambiguities arising from absorption of microwave resonance. Band edge and localized modes in cholesteric liquid crystals will be characterized. The objective is to clarify the conjunction of lasing and localization and guide development of homogeneous cholesteric materials in which ultra-low lasing threshold will be observed. The instrument will provide students preparing for careers in physics with a sound mix of microwave and optical techniques as well as exposure to industrial research laboratories engaged in forefront research. This is an instrument acquisition award from the Major Research Instrumentation program and the Instrumentation for Materials Research program to the City University of New York Queens College. The award will allow CUNY Queens College to purchase a Coherent 899-29 Autoscan II single frequency scanning laser for the study of the statistics of optical propagation in random and nearly periodic materials and photonic devices. The instrument will allow the principal investigators to extend the coherent technique developed in the microwave region of the spectrum to visible and infrared frequencies. The instrument will provide students preparing for careers in physics with a sound mix of microwave and optical techniques as well as exposure to industrial research laboratories engaged in forefront research.