Longitudinally two-photon pumped leaky waveguide dye film laser
Longitudinally two-photon pumped leaky waveguide dye film laser
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DOI：
10.1109/3.655001
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发表时间：
1998
影响因子：
2.5
通讯作者：
G. He;R. Signorini;P. Prasad
中科院分区：
文献类型：
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作者：
G. He;R. Signorini;P. Prasad
利用在光学玻璃棱镜表面涂敷的染料掺杂聚合物薄膜，在平面漏波导结构中实现了纵向双光子泵浦（TPP）和频率上转换腔激光输出。TPP激光染料是4-二甲氨基-N-甲基芪苯磺酸盐（DAST），其作为二阶非线性光学材料已被广泛研究。使用/spl sim/170-/spl mu/m厚的膜和/spl sim/2.4-mm泵浦深度测量了TPP腔激光的光谱、时间和空间结构以及输出-输入特性。漏波导激光器具有近单横模和五个轴模结构。在我们的初步研究中，发现从吸收的1064-nm泵浦脉冲能量到输出/spl sim/607-nm上转换腔激光能量的净转换效率为/spl sim/0.65%。然而，通过进一步优化系统参数可以显著提高该效率。
Longitudinally two-photon pumped (TPP) and frequency-upconverted cavity lasing is achieved in a planar leaky waveguide configuration which utilizes a dye-doped polymer film coating on the surface of an optical glass prism. The TPP lasing dye is 4-dimethylamino-N-methylstilbazolium tosylate (DAST) that has been extensively studied as a second order nonlinear optical material. The spectral, temporal, and spatial structures as well as the output-input characteristics of the TPP cavity lasing were measured using a /spl sim/170-/spl mu/m-thick film with a /spl sim/2.4-mm pump depth. The leaky waveguide lasing was featured by a nearly single transverse-mode and five axial-modes structure. In our preliminary study, the net conversion efficiency from the absorbed 1064-nm pump pulse energy to the output /spl sim/607-nm upconverted cavity lasing energy was found to be /spl sim/0.65%. However, this efficiency can be considerably increased by further optimizing the system parameters.