抄録
We have developed a highly stable noise-like pulse (NLP) laser by using nonlinear polarization rotation.
We have constructed a Fabry-Perot resonator that includes a mechanism for the passive cancellation of a
change in polarization with a Faraday rotator mirror (FRM). The FRM rotates the polarization state of
input lights by 90 degrees and reflects the lights, so this effect cancels out the polarization fluctuation
caused by light travelling back and forth through a fiber. In this experiment, the output pulse parameters
were a pulse width of 18.92 ns (FWHM), a spectrum bandwidth of 70.04 nm (FWHM) and an autocorrelation
waveform of 0.57 ps (FWHM). In addition, the resonator could generate NLPs even if the polarization
state in the resonator changed by a polarization controller (PC). From these, we succeeded in
developing the high stability NLP fiber laser constructed non-PM fiber.
