This paper presents an investigation of the secondary saturation characteristics of a HfTe_(2)saturable absorber.Pulse energies of 5.85 and 7.4 mJ were demonstrated with a high-order Hermite-Gaussian(HG)laser and a vo...This paper presents an investigation of the secondary saturation characteristics of a HfTe_(2)saturable absorber.Pulse energies of 5.85 and 7.4 mJ were demonstrated with a high-order Hermite-Gaussian(HG)laser and a vortex laser,respectively,using alexandrite as the gain medium.To the best of our knowledge,these are the highest pulse energies directly generated with HG and vortex lasers.To broaden the applications of high-energy pulsed HG and vortex lasers,wavelength tuning in the region of 40 nm was achieved using an etalon.pulse energy of 5.85 mJ and a vortex laser with a single pulse energy of 7.4 mJ were obtained in alexandrite.The repetition rates of these lasers were 262 and 196 Hz,respectively.To expand the applications of high-energy structured lasers,wavelength tuning within the range of 747-787 nm was successfully accomplished using an etalon.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.12204499 and 12174212)the Joint Key Projects of National Natural Science Foundation of China(Grant No.U2032206)。
文摘This paper presents an investigation of the secondary saturation characteristics of a HfTe_(2)saturable absorber.Pulse energies of 5.85 and 7.4 mJ were demonstrated with a high-order Hermite-Gaussian(HG)laser and a vortex laser,respectively,using alexandrite as the gain medium.To the best of our knowledge,these are the highest pulse energies directly generated with HG and vortex lasers.To broaden the applications of high-energy pulsed HG and vortex lasers,wavelength tuning in the region of 40 nm was achieved using an etalon.pulse energy of 5.85 mJ and a vortex laser with a single pulse energy of 7.4 mJ were obtained in alexandrite.The repetition rates of these lasers were 262 and 196 Hz,respectively.To expand the applications of high-energy structured lasers,wavelength tuning within the range of 747-787 nm was successfully accomplished using an etalon.
