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首先制备了不同周期的染料掺杂全息液晶/聚合物光栅并进行激光抽运实验,得到了激光器的调谐曲线,确定了激光器在574 nm到685 nm的谱带里均可以实现激光输出,即激光器具有110 nm左右的可调谐范围.之后,通过温控仪控制样品的温度,对周期为610 nm的染料掺杂全息液晶/聚合物光栅进行激光抽运,探测不同温度下的输出激光光谱,观察到随着温度由20℃升高到65℃,激光器的中心波长由627.9 nm减小到623 nm,产生了4.9 nm的波长蓝移.
Firstly, dye-doped holographic liquid crystal / polymer gratings with different periods were fabricated and the laser pumping experiment was carried out. The tuning curve of the laser was obtained. It was confirmed that the laser output could be realized in the band of 574 nm to 685 nm, that is, the laser With a tunable range of about 110 nm.Then, the temperature of the sample was controlled by a temperature controller to pump the dye-doped holographic liquid crystal / polymer grating with a period of 610 nm to detect the output laser spectrum at different temperatures and observe With the temperature rising from 20 ℃ to 65 ℃, the laser’s central wavelength decreased from 627.9 nm to 623 nm, resulting in a blue shift of 4.9 nm.