A5039831154- Advanced Fiber Laser Technologies
- Solid State Laser Technologies
- Advanced Fiber Optic Sensors
- Laser Material Processing Techniques
- Photorefractive and Nonlinear Optics
- Ultrasonics and Acoustic Wave Propagation
- Photonic Crystal and Fiber Optics
- Photonic and Optical Devices
Shenzhen University
2023-2024
State Key Laboratory of Crystal Materials
2003
Shandong University
2002-2003
Abstract The thermal conductivities of Nd:YAG, M(Y,Gd)VO 4 crystals were measured at 298 K. value Nd:GdVO crystal along <001> direction was 11.4 W/mK, which higher than that YAG to be 10.7 W/mK. principal refractive indices in the temperature range from 20 °C 170 determined by auto‐collimation method. Based on values indices, Sellmeier equation and expression dependence have been obtained. results show birefringence Δn is 0.22007 coefficient 4.33 × 10 −6 /°C for 1.064 μm. These prove...
A distributed acoustic sensor (DAS) with a one- centimeter spatial resolution is proposed and demonstrated using pulse-compression phase-sensitive optical time-domain reflectometry (Φ-OTDR). positive- negative- swept pulse was used to expand the frequency modulation range of heterodyne DAS system achieve high resolution. Rayleigh-enhanced single-mode fiber (eSMF) magnify backscattering signal suppress fading noise. The combination compression eSMF allows fully quantify perturbations 1.2 cm...
Abstract For see ChemInform in Full Text.