Diode-pumped Kerr-lens mode-locked laser operations of Yb3+:Sc2O3 ceramics have been achieved. 92 fs pulses with the average power of 850 mW under 3.89 W incident pump power were obtained at a center wavelength of 1042 nm. The optical-to-optical efficiency was 21.9%. 90 fs pulses with the average power of 160 mW were also obtained at a center wavelength of 1092 nm. To our knowledge, this is the first demonstration of a Kerr-lens mode-locked Yb3+:Sc2O3 laser.
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http://dx.doi.org/10.1364/ol.32.003382 | DOI Listing |
We demonstrate on a high-power 1-GHz Kerr-lens mode-locked (KLM) ytterbium (Yb):CYA laser delivering 149-fs pulses with an average power of 11.1 W. The corresponding single-pulse energy and peak power are 10.
View Article and Find Full Text PDFWe demonstrate the generation of stable femtosecond vortices from a self-started Kerr-lens mode-locked Yb:YAG thin-disk oscillator. By using a defective mirror inscribed with a fine line, 218-fs Hermite-Gaussian (HG) pulses are delivered directly from the thin-disk oscillator with an average power of 12 W at the repetition rate of 105 MHz and subsequently converted to Laguerre-Gaussian (LG) vortices by a cylindrical-lens mode-converter. The average output power of the Hermite-Gaussian pulses is further improved to 19 W by applying a rectangular aperture.
View Article and Find Full Text PDFA diode-pumped Kerr-lens mode-locked laser generating 25 fs pulses at 1080 nm is demonstrated with an Yb-doped compositional mixed calcium aluminate crystal. The Yb:Ca(Gd,Y)AlO laser, which operates at a repetition rate of 65.6 MHz via soft-aperture Kerr-lens mode-locking, is pumped by a spatially single-mode, fiber-coupled diode laser.
View Article and Find Full Text PDFIn this paper, we present the demonstration of a cavity-dumped Kerr-lens mode-locked femtosecond oscillator based on an Yb:CALYO crystal for the first time. With the assistance of an SESAM, the Kerr-lens mode-locked Yb:CALYO laser delivered pulses with an average power of 2.8 W at a repetition rate of 61.
View Article and Find Full Text PDFMode-locked oscillators with high-order transverse modes are excellent platforms for generating femtosecond optical vortices with high average power and good propagation stability. These have important applications in diverse fields such as optical communication, strong-field physics, and laser processing. So far, generating vortex pulses with ultrashort pulse duration remains a challenge.
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