@inproceedings{oai:niigata-u.repo.nii.ac.jp:00031069,
 author = {Suzuki, Takamasa and Hirabayashi, Shigeyuki and Sasaki, Osami and Maruyama, Takeo},
 book = {Proceedings of SPIE - the International Society for Optical Engineering, Proceedings of SPIE - the International Society for Optical Engineering},
 month = {Nov},
 note = {A new type of phase-locked laser diode interferometer which uses self-mixing interference in the optical system is described. The self-mixing interference signal is obtained easily by the optical feedback or feeding back laser beam from the object to the laser diode. The interference signal can be detected by a photodiode which is in the package of the LD. Therefore, a beam splitter, reference mirror and external photodetector are not required, and a kind of interference signal is obtained by a simple optical system. But the signal is not the same as that which is obtained in a conventional interferometer. We used the phase-locked technique to measure the phase change in the self-mixing interference signal. This technique enables us to detect the displacement of an object. We describe our principle, experimental setup, and experimental results., Optical manufacturing and testing 2 : Conference : Jul 1997, San Diego, CA},
 pages = {512--519},
 publisher = {International Society for Optical Engineering, SPIE},
 title = {Self-mixing type of phase-locked laser diode interferometer},
 volume = {3134},
 year = {1997}
}