A5101496533- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Advanced Measurement and Metrology Techniques
Nanjing Normal University
2019-2021
In this letter, we proposed an innovative laser self-mixing interferometer (SMI) with a reflection-type two-dimensional (2D) grating for three-dimensional (3D) dynamic displacement sensing. When the beams emitted by three lasers are incident on reflective 2D auto-collimation diffraction angles, diffracted will return into along original path, thus generating interference effect in each laser. order to obtain higher measurement resolution, phase-modulation technique is applied interferometer....
This paper proposes a new method for the testing of accelerometers by using laser feedback interferometer (LFI). In this method, portion light from diode is reflected an external target and then returns back to cavity, interference occurs. Depending on various vibration frequencies, fringe counting or minimum point introduced into signal analysis LFI determine sensitivity accelerometers. Theoretical experimental results are given. The proposed system applicable test in industrial...