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首页> 外文会议>Conference on Controlling and Using Light in Nanometric Domains Aug 2-3, 2001, San Diego, USA >Incorporation of organic dye molecules in nanoporous crystals for the development of hexagonal solid state microlasers
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Incorporation of organic dye molecules in nanoporous crystals for the development of hexagonal solid state microlasers

机译：将有机染料分子掺入纳米孔晶体中以开发六角形固态微激光器

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摘要

Molecular sieves, such as nanoporous AlPO_4-5, can host a wide variety of laser-active dyes. Slim dyes like Coumarin40 or Oxazine 1, fitting into the channel pores, as well as bulky dyes like rhodamines and Oxazine 750, being located in defect sites of the molecular sieve structure, are embedded during microwave-assisted crystallization. The fast microwave-assisted crystallization offers a new procedure for the stable and monomeric encapsulation of organic dyes into molecular sieves without any degradation of the chromophores and enables the control of the morphology of the host material. Based on this class of materials a new form of microlasers has been created. Their properties depend on size and shape of the molecular sieve crystals. The microcrystals act as hexagonal ring resonators (whispering gallery mode). In dependence on the morphology of the crystals different laser properties have been observed in agreement with theoretical predictions. Large hexagonal crystals (diameter of the hexagonal plane > 7 μm) revealed multiline laser emission, while smaller crystals (diameter about 5 μm) oscillate on one single line. The laser threshold power density decreases with decreasing diameter of the crystals. In terms of pumping needed to reach lasing molecular sieve microlasers are comparable to quantum dot semiconductor lasers.
机译：分子筛（例如纳米多孔AlPO_4-5）可以容纳多种激光活性染料。纤巧的染料（如香豆素40或Oxazine 1）适合进入通道孔，而大分子的染料（如若丹明和Oxazine 750）则位于分子筛结构的缺陷部位，它们在微波辅助结晶过程中被嵌入。快速的微波辅助结晶为将有机染料稳定和单体包封到分子筛中提供了新的程序，而不会生色团发生任何降解，并且能够控制主体材料的形态。基于此类材料，已经创建了一种新型的微激光。它们的性质取决于分子筛晶体的大小和形状。微晶充当六角环共振器（低语画廊模式）。根据晶体的形态，已经观察到与理论预测一致的不同的激光性质。大六边形晶体（六边形平面的直径> 7μm）显示多线激光发射，而较小的晶体（直径约5μm）在一条直线上振荡。激光阈值功率密度随晶体直径的减小而减小。在达到激射所需的泵浦方面，分子筛微激光器可与量子点半导体激光器媲美。

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