Zirconium-doped hybrid films patterned by soft lithography for distributed-feedback lasers
Zirconium-doped hybrid films patterned by soft lithography for distributed-feedback lasers
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DOI：
10.1007/s00340-010-4035-5
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
Lu-Jian Chen;Qiong Zhou;Sen-Sen Li-Sen;Z. Cai;Shou Liu;X. Ren
中科院分区：
文献类型：
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作者：
Lu-Jian Chen;Qiong Zhou;Sen-Sen Li-Sen;Z. Cai;Shou Liu;X. Ren
采用旋涂法在玻璃基片上制备了不同锆硅摩尔比的锆掺杂罗丹明6 G（Rh 6 G）杂化薄膜。采用软光刻技术，利用聚二甲基硅氧烷（PDMS）复制品制作了表面调制深度大于160 nm的二阶分布反馈（DFB）谐振器。在脉冲倍频调Q Nd：YAG激光器的光泵浦下，通过改变光栅的周期，可调谐DFB激光器的发射波长超过16 nm。通过优化Zr-Si摩尔比，获得了3 μJ/mm 2的低激光阈值。
Zirconium (Zr)-doped hybrid films containing Rhodamine 6G (Rh6G) were prepared by spin-coating on glass substrates with different Zr–Si molar ratio. Second-order distributed-feedback (DFB) resonators with large surface-relief modulation depth over 160 nm could be fabricated by soft lithographic technique using a polydimethylsiloxane (PDMS) replica. Optically pumped by a pulsed frequency-doubled Q-switched Nd:YAG laser, the emission wavelength of the DFB-lasers can be tuned over 16 nm by changing the grating period. With the optimization of the Zr–Si molar ratio, low laser threshold of 3 μJ/mm2was obtained.