A polymer film with ultra-broadband optical gain characteristics
A polymer film with ultra-broadband optical gain characteristics
复制标题
DOI：
10.1063/1.5129477
复制
发表时间：
2020-02
影响因子：
4
通讯作者：
Yuya Hara;Youtaro Higase;Marie Taguchi;Shun Takahashi;F. Sasaki;K. Yamashita
中科院分区：
文献类型：
--
作者：
Yuya Hara;Youtaro Higase;Marie Taguchi;Shun Takahashi;F. Sasaki;K. Yamashita
可调谐激光设备的小型化是各种光电子技术进一步发展的重要因素。为了实现紧凑型可调谐激光器件，需要具有宽带光学增益特性的光学增益介质。在这项研究中，我们提出了一种很有希望的策略来制备在可见光波长区具有∼250 nm增益带宽的光学增益膜。这种薄膜由共掺杂有机发光分子的聚合物基质组成，形成激发态的络合物，即激基络合物。激基复合态可以与单分子激子态共存，从而获得具有较大斯托克斯位移的宽带(400-650 nm)光增益。当薄膜与光学谐振器结合时，光抽运的激光作用也是可能的。这一策略将有助于开发紧凑型可调谐激光器件而不需要更换有源介质。可调谐激光设备的小型化是各种光电子技术进一步发展的重要因素。为了实现紧凑型可调谐激光器件，需要具有宽带光学增益特性的光学增益介质。在这项研究中，我们提出了一种很有希望的策略来制备在可见光波长区具有∼250 nm增益带宽的光学增益膜。这种薄膜由共掺杂有机发光分子的聚合物基质组成，形成激发态的络合物，即激基络合物。激基复合态可以与单分子激子态共存，从而获得具有较大斯托克斯位移的宽带(400-650 nm)光增益。当薄膜与光学谐振器结合时，光抽运的激光作用也是可能的。这一策略将有助于开发紧凑型可调谐激光器件，而无需更换有源介质。
Miniaturization of the tunable laser equipment is an important factor for further development in various optoelectronic technologies. To realize the compact tunable laser devices, an optical gain medium having a broadband optical gain characteristic is required. In this study, we propose a promising strategy for preparing an optical gain film that exhibits a ∼250 nm gain bandwidth in the visible wavelength region. This film consists of a polymer matrix co-doped with organic luminescent molecules that form a complex of the excited state, i.e., exciplex. The exciplex state can co-exist with the monomolecular exciton state, leading to broadband (400–650 nm) optical gain with a large Stokes shift. Optically pumped lasing action is also possible when the film is combined with an optical resonator. This strategy would be useful for developing a compact tunable laser device without active medium replacement.Miniaturization of the tunable laser equipment is an important factor for further development in various optoelectronic technologies. To realize the compact tunable laser devices, an optical gain medium having a broadband optical gain characteristic is required. In this study, we propose a promising strategy for preparing an optical gain film that exhibits a ∼250 nm gain bandwidth in the visible wavelength region. This film consists of a polymer matrix co-doped with organic luminescent molecules that form a complex of the excited state, i.e., exciplex. The exciplex state can co-exist with the monomolecular exciton state, leading to broadband (400–650 nm) optical gain with a large Stokes shift. Optically pumped lasing action is also possible when the film is combined with an optical resonator. This strategy would be useful for developing a compact tunable laser device without active medium replacement.