PROJECT TITLE :

Dissipative Soliton Resonance in a Wavelength-Tunable Thulium-Doped Fiber Laser With Net-Normal Dispersion

ABSTRACT:

We tend to demonstrate an all-fiber figure-eight mode-locked thulium-doped fiber laser with a wide tunable vary in each pulsewidth and wavelength. A 45-m-long ultrahigh numerical aperture fiber is employed to manage the cavity dispersion, and the web cavity dispersion is calculated to be zero.85eighty five ps two at 1900 nm. With web-normal dispersion, the experimental laser, operating in a dissipative soliton resonance region, generates stable rectangular pulses. The pulsewidth varies from 480 ps to 6.nineteen ns with the increasing pump power, and its center wavelength features a 28.ninety five-nm tunable range (from 1940.22 to 1969.seventeen nm) by properly adjusting the polarization controllers. The maximum of average output power and pulse energy is sixty.seventy three mW and 19.fifty one nJ, respectively. The rectangular pulses have a clamped peak power of concerning 3.sixteen W. The wavelength-tunable fiber laser with high-energy output operating at 2 has nice potential in numerous application fields.