Liu Bo, Yu Zhihao, Tian Zhipeng, Homa Daniel, Hill Cary, Wang Anbo, Pickrell Gary
Opt Lett. 2015 May 1;40(9):2041-4. doi: 10.1364/OL.40.002041.
Anti-Stokes Raman scattering in sapphire fiber has been observed for the first time. Temperature dependence of Raman peaks' intensity, frequency shift, and linewidth were also measured. Three anti-Stokes Raman peaks were observed at temperatures higher than 300°C in a 0.72-m-long sapphire fiber excited by a second-harmonic Nd YAG laser. The intensity of anti-Stokes peaks are comparable to that of Stokes peaks when the temperature increases to 1033°C. We foresee the combination of sapphire fiber Stokes and anti-Stokes measurement in use as a mechanism for ultrahigh temperature sensing.
首次在蓝宝石光纤中观测到反斯托克斯拉曼散射。还测量了拉曼峰强度、频移和线宽随温度的变化。在由倍频钕钇铝石榴石激光器激发的0.72米长蓝宝石光纤中，在高于300°C的温度下观测到了三个反斯托克斯拉曼峰。当温度升至1033°C时，反斯托克斯峰的强度与斯托克斯峰相当。我们预计蓝宝石光纤斯托克斯和反斯托克斯测量的结合将用作超高温传感机制。
