Radially polarized and passively Q-switched fiber laser.

ABSTRACT: We report, for the first time to our knowledge, a radially polarized and passively Q-switched Yb-doped fiber laser. By using a Cr(4+):YAG crystal as a saturable absorber and a photonic crystal grating as a polarization mirror, a radially polarized pulse is produced, which has 202 W of peak power, 75 ns duration, and ~92% polarization purity at a 56.6 kHz repetition rate. The Q-switched pulse with radial polarization from the fiber laser would facilitate numerous applications.

SUBMITTER: Lin D 

PROVIDER: S-EPMC5568895 | biostudies-other | 2010 Nov

REPOSITORIES: biostudies-other