Patent ID: 8724673
Filing Date: 2014-05-13
Classification: G02B,H01S

Abstract:
1. A pulse fiber laser device comprising: an amplifying optical fiber arranged on a resonant optical path of an optical resonator; an excitation light supply unit supplying excitation light to the amplifying optical fiber; a saturable absorber arranged on the resonant optical path; a first optical fiber which has a first end face opposing the saturable absorber, guides light on the resonant optical path, and outputs the light from the first end face toward the saturable absorber; a first gradient index lens which is attached to the first end face of the first optical fiber, converges the light output from the first end face of the first optical fiber, and outputs the light to the saturable absorber; an optical output unit outputting a part of oscillation light emitted from the amplifying optical fiber with the excitation light supplied from the excitation light supply unit and oscillated in the optical resonator to the outside of the optical resonator; and distance adjusting means adjusting a distance between the saturable absorber and the first gradient index lens.