Supercontinuum generation of gold coated side-polished fiber based-mode-locked pulse

A supercontinuum (SC) generation is produced by mode-locked pulses incorporating gold-coated side-polished as saturable absorber (SA) inserted into a 50 m high nonlinear fiber (HNLF) in a 2.81 m single ring length cavity, with 0.5 m of erbium-doped-fiber (EDF). The side-polished fiber (SPF) is coated with a gold thin film using DC magnetron sputtering that acts as a saturable absorber (SA). Gold-SPF is inserted in the laser cavity to produce a passively mode-locked fiber laser, creating pulses with pulse energy, peak power, and repetition rate of 7.55 pJ, 13.25 W, and 38.73 MHz, respectively. This pulse is then injected into a 1.5 ps/nm.km dispersion of HNLF with a 50 m, giving an SC spectral bandwidth beyond 1700 nm from 1407.1 nm, with an FWHM pulse width of 570 fs.