光致发光发热光分频利用光纤研究

Study on Photoluminescence Heating and Spectral Beam Splitting Utilizing Optical Fiber

该文利用光热转换六硼化镧(LaB6)、加拿大树脂、纳米SiO2,制备了不同掺杂含量的LaB6-SiO2-加拿大树脂溶胶,并涂敷在塑料光纤表面,构成了光致发光发热光分频利用光纤。测试了LaB6颗粒的吸收光谱及升温速率,LaB6掺杂含量与涂敷层厚度对光纤表面发光发热性能的影响。LaB6在波长为510~650 nm时出现弱吸收,用于光辐射;LaB6对其他可见-近红外波段的光呈现出强吸收,用于产热。当LaB6的质量分数为0.30%,涂敷层厚为200μm时,光纤表面发光发热的均匀性最佳,观测点的平均发光强度及平均升温速率分别达到26.59μW/cm^2和0.29℃/min,实现了可见-近红外光谱的光分频利用。

The LaB6-SiO2-Canadian resin sols with different doping content of LaB6 were prepared by using the lanthanum hexaboride(LaB6)nanomaterials,Canadian resin sol and nano-SiO2,and then coated on the surface of plastic optical fiber to form a photoluminescence heating and spectral beam splitting utilizing optical fiber.The absorption spectrum and heating rate of LaB6 particles were tested,and the effects of the doping content of LaB6 and the thickness of the coating layer on the luminous heating performance of the fiber surface were investigated.The results showed that the LaB6 exhibited weak absorption at the wavelength of 510~650 nm for light radiation,while exhibited strong absorption for light at other visible-near infrared bands for heat generation.When the mass fraction of LaB6 is 0.30%and the coating thickness is 200μm,the uniformity of photoluminescence heating on the surface of optical fiber is the best,and the average luminous intensity and average heating rate of the observation points reach 26.59μW/cm^2 and 0.29℃/min,respectively,and realizes the utilizing of spectral beam splitting in the visible-near infrared spectrum.