title: Implementation of a loss-compensated recirculating delayed self-heterodyne interferometer for ultranarrow laser linewidth measurement.
abstract: Ultranarrow laser linewidth measurement using an optimized loss- compensated recirculating delayed self-heterodyne interferometer is described. An experimental setup is constructed to measure subkilohertz laser linewidths. The system parameters are optimized to obtain the best beat signals. The experimental results agree well with the theoretical analysis. Two methods of linewidth interpretation are presented and analyzed based on the experimental results. It is proved that a loss-compensated recirculating delayed self-heterodyne interferometer is an effective tool for measuring an ultranarrow laser linewidth.
authors.affiliation: Center for Photonics Technology, Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0111, USA. xichen5@vt.edu
authors.forename: Xiaopei
authors.initials: X
authors.lastname: Chen
authors.forename: Ming
authors.initials: M
authors.lastname: Han
authors.forename: Yizheng
authors.initials: Y
authors.lastname: Zhu
authors.forename: Bo
authors.initials: B
authors.lastname: Dong
authors.forename: Anbo
authors.initials: A
authors.lastname: Wang