Open AccessControlling the duty cycle of the eigenstates in laser with multiple optical feedback
Author(s) -
Zhoumo Zeng,
Shulian Zhang,
Yidong Tan,
Weixin Liu
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.019990
Subject(s) - optics , duty cycle , polarization (electrochemistry) , physics , laser , asymmetry , eigenvalues and eigenvectors , optical tweezers , optical cavity , power (physics) , chemistry , quantum mechanics
The polarization dynamics of a quasi-isotropic single-mode laser subjected to multiple optical feedback is presented. The variable duty cycle of two eigenstates is observed in high-frequency optical fringes. The high-frequency optical fringes are induced by the multiple reflections in the asymmetry feedback cavity. The duty cycle of two eigenstates can be controlled easily by adjusting the position of polarization flipping due to the residual stress of laser mirror. Particularly, when the frequency difference results from residual stress is reduced to 1.5MHz, the position of polarization flipping moves to the edge of each fringe which can be used to measure small displacement with direction sensitivity and high resolution.