Abstract
We propose and demonstrate a modified frequency sweep-free pump-probe technique, called staring pump-probe technique (SPPT) for Brillouin signal measurement based on stimulated Brillouin scattering (SBS). The SPPT retains the advantages of conventional pump-probe technique, and employs a simple device and low-cost measurement system. Moreover, the Brillouin gain/loss spectrum (BGS/BLS) can be reconstructed without frequency-sweep, thus greatly improving the measurement speed. In this paper, an approximate flat-top spectrum broadened probe light is introduced through distributed feedback laser by direct modulation. The BGS/BLS is reconstructed with the enhanced signal-noise ratio of approximately 21 dB/23 dB. This technique has a potential application for some Brillouin scattering involved Brillouin frequency shift measurement.
© 2017 Optical Society of America
Full Article | PDF ArticleMore Like This
Alejandro Dominguez-Lopez, Xabier Angulo-Vinuesa, Alexia Lopez-Gil, Sonia Martin-Lopez, and Miguel Gonzalez-Herraez
Opt. Express 23(8) 10341-10352 (2015)
Dengwang Zhou, Yongkang Dong, Benzhang Wang, Taofei Jiang, Dexin Ba, Pengbai Xu, Hongying Zhang, Zhiwei Lu, and Hui Li
Opt. Express 25(3) 1889-1902 (2017)
Can Zhao, Ming Tang, Liang Wang, Hao Wu, Zhiyong Zhao, Yunli Dang, Jiadi Wu, Songnian Fu, Deming Liu, and Perry Ping Shum
Opt. Express 25(11) 12698-12709 (2017)