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Polymeric distributed-feedback resonator with sub-micrometer fibers fabricated by two-photon induced photopolymerization |
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| Authors: | Chun-Fang Li Xian-Zi Dong Feng Jin Wei Jin Wei-Qiang Chen Zhen-Sheng Zhao Xuan-Ming Duan |
| Institution: | (1) Laboratory of Organic NanoPhotonics and Laboratory of Organic Optoelectronic Functional Materials and Molecular Engineering, Technical Institute of Physical and Chemistry, Chinese Academy of Science, Beijing, 100080, P.R. China;(2) Laboratory of Organic NanoPhotonics, Technical Institute of Physical and Chemistry, Chinese Academy of Science, and Graduate School of Chinese Academy Sciences, Beijing, 100080, P.R. China |
| Abstract: | The authors observed amplified spontaneous emission (ASE) action with an ultra-low threshold under optical excitation from an active polymeric distributed-feedback (DFB) resonator which consists of sub-micrometer fiber grating. A dendrimer was used to modify the laser dye and increased its concentration up to 4.95 wt. % in the photocured resin. The DFB resonator was fabricated by using two-photon induced polymerization (TPIP) technique. The ASE at 556 nm was observed with a threshold of 0.30 μJ/pulse due to fourth-order diffraction feedback of the optical gain. This DFB could be expected to open a way for the fabrication and application of microscale polymeric mirrorless laser. PACS 42.70.-a; 81.40.Tv; 82.35.Ej; 82.50.Pt; 42.60.Da |
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