Efficient broadband-spectrum oscillation of ultrashort-pulse Kerr-lens mode-locked Yb:YAG laser with intracavity nonlinear media overcoming the fluorescence spectrum limit

Ultrashort-pulse nonlinear Raman Yb:YAG laser with Raman medium

“…These output spectra over 10 nm were much broader than the fluorescence of about 9 nm. Furthermore, We obtained a extra broader spectrum of mode-locked Yb:YAG laser about 30 nm with the peak wavelength of 1049 nm [4]. The oscillation wavelength is the second gain peak of the Yb:YAG, which is much broader gain spectrum than the peak gain of 1030 nm.…”

Theoretical Analysis of Dependence of Nonlinear Effects in Mode-Locked Yb:YAG Lasers with a Highly Nonlinear Intra-Cavity Medium

“…We used a Yb:YAG crystal as the laser gain material to demonstrate for the first time the generation of ultrashort pulses beyond the gain spectrum limit directly from the mode-locked laser by using a highly nonlinear intra-cavity medium [6][7][8][9]. Several Yb-doped laser gain media with wide gain bandwidths beyond 10 nm have been reported.…”

Spectroscopic and lasing properties of highly-doped Ytterbium-glasses

“…For example, several kW with nearly-single-transverse-mode output power was achieved in continuos-wave oscillation, kW-average power was also achieved in ultrashort-pulse oscillation. Ultrashort-pulse generations around several-ten fs were also achieved by many of the laser gain materials, ultrashort-pulse generation toward the fluorescence spectrum limit were achieved by intracavity nonlinear medium [2][3], high-optical to optical conversion efficiencies around 80% [4] and around 70% [5] were achieved in continuous-wave and nano-second pulsed oscillations, respectively. The highest quantum efficiency above 99% was also obtained [6].…”