%0 Journal Article %1 beirow2018radially %A Beirow, Frieder %A Eckerle, Michael %A Dannecker, Benjamin %A Dietrich, Tom %A Abdou Ahmed, Marwan %A Graf, Thomas %D 2018 %I Optical Society of America %J Optics Express %K %N 4 %P 4401-4410 %R 10.1364/OE.26.004401 %T Radially polarized passively mode-locked thin-disk laser oscillator emitting sub-picosecond pulses with an average output power exceeding the 100 W level %V 26 %X We report on a high-power passively mode-locked radially polarized Yb:YAG thin-disk oscillator providing 125 W of average output power. To the best of our knowledge, this is the highest average power ever reported from a mode-locked radially polarized oscillator without subsequent amplification stages. Mode-locking was achieved by implementing a SESAM as the cavity end mirror and the radial polarization of the LG*01 mode was obtained by means of a circular Grating Waveguide Output Coupler. The repetition rate was 78 MHz. A pulse duration of 0.97 ps and a spectral bandwidth of 1.4 nm (FWHM) were measured at the maximum output power. This corresponds to a pulse energy of 1.6 μJ and a pulse peak power of 1.45 MW. A high degree of radial polarization of 97.3 ± 1% and an M2-value of 2.16 which is close to the theoretical value for the LG*01 doughnut mode were measured.

@article{beirow2018radially, abstract = {We report on a high-power passively mode-locked radially polarized Yb:YAG thin-disk oscillator providing 125 W of average output power. To the best of our knowledge, this is the highest average power ever reported from a mode-locked radially polarized oscillator without subsequent amplification stages. Mode-locking was achieved by implementing a SESAM as the cavity end mirror and the radial polarization of the LG*01 mode was obtained by means of a circular Grating Waveguide Output Coupler. The repetition rate was 78 MHz. A pulse duration of 0.97 ps and a spectral bandwidth of 1.4 nm (FWHM) were measured at the maximum output power. This corresponds to a pulse energy of 1.6 μJ and a pulse peak power of 1.45 MW. A high degree of radial polarization of 97.3 ± 1% and an M2-value of 2.16 which is close to the theoretical value for the LG*01 doughnut mode were measured.}, added-at = {2023-08-31T15:04:36.000+0200}, author = {Beirow, Frieder and Eckerle, Michael and Dannecker, Benjamin and Dietrich, Tom and Abdou Ahmed, Marwan and Graf, Thomas}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2024a899cde4e9763146b17865e1d4c57/puma-wartung}, doi = {10.1364/OE.26.004401}, interhash = {3efabec09452487d872ca4fe649e0178}, intrahash = {024a899cde4e9763146b17865e1d4c57}, issn = {1094-4087}, journal = {Optics Express}, keywords = {}, language = {eng}, number = 4, pages = {4401-4410}, publisher = {Optical Society of America}, timestamp = {2023-08-31T13:04:36.000+0200}, title = {Radially polarized passively mode-locked thin-disk laser oscillator emitting sub-picosecond pulses with an average output power exceeding the 100 W level}, volume = 26, year = 2018 }